Electric pick vehicle and application method thereof in slope ramp construction in building decoration

Abstract

The invention relates to an electric pick vehicle and an application method of the electric pick vehicle in slope ramp construction in building decoration. The electric pick vehicle mainly comprises a mounting frame, an electric pick device, a control handle and an innovative slope parking device. The slope parking device is composed of a device main body, a rewinding traction assembly, an elastic supporting leg assembly and an elastic pushing and pressing assembly, and the slope parking and controllable feeding functions are achieved in a staged mode through the downward pressing action of a control handle. When an operator preliminarily presses the handle downwards, the supporting legs abut against the ground to form stable supporting, and meanwhile the locking mechanism is meshed to limit loosening of the traction belt. And during further downward pressing, downward pressing force of the operator is converted into upward pushing force along the slope, and controllable advancing of the electric pick vehicle is achieved. By means of the design, the electric pick vehicle can stably park on a slope under the condition that no person continuously supports the electric pick vehicle, an operator can control feeding through the body weight and the lever principle, and overexertion is not needed.

Description

Technical Field

[0001] The present invention relates to the field of building decoration construction equipment, and particularly to a pneumatic pick truck for ramp construction and its application method. Background Art

[0002] In building decoration projects, especially in the construction of ramps in places such as underground garages, shopping malls, and hotel lobbies, it is a common and important operation. The surfaces of these ramps are usually tiled or sprayed with oxidized floors, and during the renovation or refurbishment of buildings, demolition and crushing operations need to be carried out on them. Currently, such operations are mainly completed by equipment such as pneumatic pick trucks.

[0003] As a professional building decoration tool, a pneumatic pick truck is widely used in operations such as ground removal, floor tile demolition, and concrete crushing. A traditional pneumatic pick truck generally consists of basic structures such as a pneumatic pick device, a support frame, walking wheels, and an operation handle. Among them, the pneumatic pick device provides the breaking force, the support frame bears the pneumatic pick and disperses the vibration, the walking wheels facilitate the movement of the equipment, and the operation handle is used for manual control.

[0004] However, the application of existing pneumatic pick trucks on ramps has obvious deficiencies: when operating on a ramp, due to the influence of gravity, the pneumatic pick truck has a tendency to slide down the ramp. This forces the operator to continuously pull or hold against the pneumatic pick truck to prevent the equipment from sliding. This operation method not only greatly increases the labor intensity but also causes the worker to quickly fatigue and reduces the work efficiency. Especially on ramps with a larger slope, the operation difficulty is greater, and there are even potential safety hazards.

[0005] Currently, the main solutions to this problem on the market are as follows: 1. Increase the friction at the bottom of the pneumatic pick truck: By adding rubber anti-slip pads to the walking wheels or using wheels made of special materials, the friction with the ground is enhanced. However, this method has limited effects, especially in the case of a larger slope or a relatively smooth ground, it is still difficult to effectively prevent sliding.

[0006] 2. Use a mechanical locking device: Install a mechanical locking mechanism on the pneumatic pick truck, such as a braking device or a stopper, to manually lock the walking wheels. Although this method can temporarily prevent sliding, the operation is cumbersome and requires frequent locking and unlocking operations, which affects the continuity of work.

[0007] 3. Increase the counterweight: Add a counterweight to the front end of the pneumatic pick truck to adjust the center of gravity distribution and reduce the sliding trend. However, this method will increase the overall weight of the equipment, not only increasing the handling difficulty but also increasing the operation resistance.

[0008] 4. Auxiliary support tools: Use external tools such as wedges and support frames for auxiliary fixation. This method requires additional tools to be carried, and reinstallation is needed every time the position is moved, with cumbersome operations and low efficiency.

[0009] Although these existing technologies have alleviated the problem of the electric pickaxe vehicle sliding on the ramp to a certain extent, they all have obvious defects and cannot fundamentally solve the working burden and efficiency problems of the operators. Especially in a complex working environment and a large construction area, the operator still needs to continuously hold or resist the electric pickaxe vehicle, resulting in muscle fatigue after long-term operation and even possible safety accidents due to sliding.

[0010] In addition, the electric pickaxe vehicle in the existing technology lacks the controllable feeding function on the slope, that is, it cannot achieve precise position adjustment in a stable parked state. This makes it necessary for the operator to resist the electric pickaxe vehicle again and push it to the next position after completing a brick shoveling operation at one place, with discontinuous operations and low work efficiency. Summary of the Invention

[0011] In view of the above problems, the present invention provides an electric pickaxe vehicle with a ramp parking device. Through the coordinated work of a retractable traction assembly, an elastic foot support assembly, and an elastic pressing assembly, the operator can keep the electric pickaxe vehicle parked stably on the ramp without continuous force application and can perform controlled feeding, thus significantly improving the comfort and efficiency of brick shoveling operations on the ramp.

[0012] The invention object of the present invention is achieved through the following technical solutions: An electric pickaxe vehicle, comprising: An installation frame, the installation frame includes a vehicle chassis and a connection bracket. The vehicle chassis is provided with rolling wheels at its rear end. The connection bracket includes an arc bracket and an installation support rod. The lower end of the arc bracket is connected to the rear end of the vehicle chassis, and one end of the installation support rod is connected to the middle of the arc bracket, and the other end is connected to the front end of the vehicle chassis; An electric pickaxe device, the electric pickaxe device is installed on the installation support rod and faces the front end of the installation frame; A control handle, the control handle is hinged to the arc bracket through a rotating arm and extends towards the rear end of the installation frame; A ramp parking device, the ramp parking device is arranged between the control handle and the installation frame, and the ramp parking device includes: A device main body, the device main body is elastically connected to the tail of the installation frame along the traveling direction of the rolling wheels; Retractable traction assembly, the retractable traction assembly includes a traction belt, a rolling return shaft and a coil spring. One end of the traction belt is detachably connected to the ground, and the other end bypasses the guiding and tensioning pulley on the connecting bracket to the rolling return shaft and is wound and connected thereto. The rolling return shaft is installed on the device body through a bearing structure, and the coil spring is arranged such that the winding force acts on the rolling return shaft; Elastic support foot assembly, the elastic support foot assembly includes a resilient plate, a return spring and a support foot. The resilient plate is movably connected to the device body through a hinge shaft. The resilient plate is provided with a through hole for the traction belt to pass through. The return spring is installed between the device body and the lower end of the resilient plate. The support foot is connected to the lower end of the resilient plate; Elastic pressing assembly, the elastic pressing assembly includes a socket frame and a connecting frame. One end of the socket frame is fixed to the control handle, and the other end forms a telescopic sleeve structure with the connecting frame. A push rod is provided at the lower end of the connecting frame; Wherein, when the control handle is pressed down, the push rod presses the resilient plate to move the support foot downward to abut against the ground, and when the control handle is further pressed down, the feeding control of the electric pickaxe vehicle on the slope is realized.

[0013] Beneficial effects: An electric pickaxe vehicle with a reasonable structural design is provided. Through the slope parking device, stable parking and controllable feeding functions without continuous manual support can be realized, reducing the operation difficulty, reducing the fatigue of the operators, and improving the work efficiency.

[0014] Preferably, a stable limiting structure is provided at the lower part of the resilient plate. The stable limiting structure includes tooth-shaped limiting members symmetrically arranged on the resilient plate and a limiting tooth ring symmetrically arranged on the rolling return shaft. When the resilient plate is pressed down, the tooth-shaped limiting members are engaged with the limiting tooth ring, and the engagement is automatically separated when the resilient plate rebounds. Beneficial effects: The locking and release of the rolling return shaft are realized through the stable limiting structure, preventing the traction belt from loosening, ensuring the stability of the electric pickaxe vehicle on the slope, and eliminating the need for additional locking operations, with simple operation.

[0015] Preferably, the tooth-shaped limiting members are designed as two split structures connected by a hinge structure, so that the tooth-shaped limiting members still allow the resilient plate to continue to move downward when engaged with the limiting tooth ring. Beneficial effects: The split hinge design of the tooth-shaped limiting members allows the resilient plate to continue to be pressed down after engagement, enabling the support foot to form a more sufficient and stable contact with the ground, improving the parking stability, and being able to adaptively adjust the engagement position in different slope environments.

[0016] Preferably, two guiding tension wheels are provided, one of which is located at the top of the arc-shaped bracket and is a directional pulley, and the other is located at the rear end of the mounting support rod and behind the top of the arc-shaped bracket and is a roller pulley. Beneficial effects: The specific arrangement of the two guiding tension wheels ensures the stable tension state of the traction belt, forms a multi-point force system, improves the force balance and traction stability of the electric pickaxe vehicle, and resists the vibration generated during the operation of the electric pickaxe device.

[0017] Preferably, a universal roller is movably connected inside the middle of the directional pulley. Beneficial effects: The design of the universal roller in the middle of the directional pulley allows the electric pickaxe vehicle to make small-angle steering adjustments, and at the same time ensures that the traction belt will not wrinkle and deform during the steering process, enhancing the operation flexibility of the equipment.

[0018] Preferably, the vehicle chassis and the device main body are elastically connected through a shock-absorbing spring, and the shock-absorbing spring is protected in a shielding housing; a stabilizing wheel is provided at the rear side of the device main body. Beneficial effects: The shock-absorbing spring provides elastic buffering characteristics to absorb the vibration during the operation of the electric pickaxe; the shielding housing protects the shock-absorbing spring from being damaged; the stabilizing wheel increases the support points, further improving the forward movement and parking stability of the electric pickaxe vehicle.

[0019] Preferably, the control handle is hinged to the connection hole of the arc-shaped bracket through a connecting shaft thereon, and a rotation limit structure for limiting the upper rotation limit of the control handle is provided between the control handle and the connection bracket. Beneficial effects: The rotation limit structure limits the upper rotation limit of the control handle, avoiding the centripetal force caused by the upward rotation due to the lack of obstruction during the process of the operator lifting the control handle and pushing it forward, ensuring smooth forward pushing.

[0020] In view of the above problems, the present invention also provides a construction method of a ramp in building decoration using the electric pickaxe vehicle as described above, including the following steps: Preparation step: Fix the free end of the traction belt at a specific position on the ramp, and push the electric pickaxe vehicle to the starting position for brick shoveling. During this process, the traction belt unfolds and elongates from the rolling return shaft. Parking step: The operator presses down the control handle, so that the push rod of the elastic pressing component presses down the elastic plate. The elastic plate moves downward against the elastic force of the return spring, driving the support foot to move downward until it touches the ramp surface. At the same time, the toothed limiting member at the lower part of the elastic plate meshes with the limiting tooth ring on the rolling return shaft, locking the rotation of the rolling return shaft, preventing the traction belt from loosening, and enabling the electric pickaxe vehicle to stably park on the ramp without continuous support from the operator. Operation step: In the parked state, the electric pickaxe device performs demolition and crushing operations on the floor tiles or floor of the ramp. Feeding step: After the operation is completed, the operator continues to press down the control handle. When the support feet are in a stable state of propping up, the push rod presses the traction belt to form a clamping with the connecting bracket, so that the electric pickaxe vehicle moves upward along the slope against gravity for a certain distance to complete feeding; Repeating step: The operator slightly releases the downward pressure on the control handle to keep the support feet in slight contact with the ground, pushes the electric pickaxe vehicle forward to a new position, then increases the downward pressure to re-lock the position and repeats the above operation steps and feeding steps until the construction of the entire ramp is completed.

[0021] Beneficial effects: Provide a complete operation process for the electric pickaxe vehicle during ramp construction, realize the stable parking, operation and controllable feeding of the electric pickaxe vehicle on the slope, form a systematic working cycle, and significantly improve the ramp operation efficiency and safety.

[0022] Preferably, when operating on a slope with a gradient not exceeding 15°, the operator keeps the body slightly forward-leaning, holds the control handle with both hands, and naturally presses down the control handle by using the weight of the upper body while keeping both feet standing stably on the slope. Beneficial effects: Provide the best operation posture guidance for slopes with a gradient not exceeding 15°, naturally press down the control handle by using the weight of the upper body, reduce the burden on the arms, and improve the operation comfort.

[0023] Preferably, when operating on a slope with a gradient between 15° and 25°, the operator adopts a forward-leaning standing posture, steps forward with one foot and pedals backward with the other foot to form a triangular support structure, and transfers about 60% of the body weight forward through the control handle to the device; During the feeding process, the operator first slightly lifts the control handle to release the ground contact of the support feet, and then uses the waist strength to push forward and moderately press down the control handle at the same time, converting the downward pressure of the body weight into a forward thrust through the lever principle. Beneficial effects: Provide special operation posture guidance for relatively steep slopes (15° - 25°), adopt a standing posture with a triangular support structure and reasonable body weight distribution, and convert the body weight into thrust through the lever principle, reduce the muscle burden, and improve the continuous working ability.

[0024] In summary, the present invention has the following advantages compared with the prior art: The electric jackhammer vehicle provided by the present invention and its application method in ramp construction during building decoration have various beneficial effects: It completely solves the problem that traditional electric jackhammer vehicles are prone to slide due to gravity during ramp construction, enabling operators to no longer need to continuously pull or hold the electric jackhammer vehicle; by realizing the functions of autonomous parking and controllable feeding, the work efficiency is significantly improved; the innovative ramp parking device utilizes the lever principle and body weight conversion to control feeding, greatly reducing the burden on arm muscles and operation fatigue; a single pressing action realizes parking locking and feeding control in stages, simplifying the operation process; the multi-point support structure forms a stable triangular support in cooperation with the traction belt tensioning system to ensure the stability and safety of the equipment; it can adapt to different slopes (up to 25°) and ground materials, with a wide range of applications; each functional component cooperates with each other to form a complete mechanical transmission system, with a compact and reasonable structure; improving efficiency and reducing labor intensity indirectly reduce project costs and construction periods; solving the risk of equipment sliding and providing operation posture suggestions to ensure operation safety; the guide system and universal roller design enhance the adaptability of the equipment in complex construction environments, providing an innovative solution for the building decoration industry, especially in the field of ramp construction, and having significant practical value. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the provided drawings.

[0026] Figure 1 It is a schematic structural diagram of the electric jackhammer vehicle of the present invention applied to a ramp; Figure 2 It is a schematic structural diagram of a partial electric jackhammer vehicle of the present invention without pressing the elastic pressing component; Figure 3 It is a schematic structural diagram of the electric jackhammer vehicle of the present invention with the elastic pressing component pressed down; Figure 4 For Figure 2 The partial enlarged view at position I in; Figure 5 It is a schematic structural diagram of the rotation limit structure of the electric jackhammer vehicle of the present invention; Figure 6 For Figure 1 The partial enlarged view at position II in.

[0027] Markings in the figure: installation frame 10, electric pickaxe device 20, ramp parking device 30, control handle 40, vehicle chassis 11, rolling wheel 111, connecting bracket 12, arc bracket 121, installation support rod 122, retractable traction assembly 31, traction belt 311, rolling return shaft 312, coil spring 313, elastic support foot assembly 32, elastic plate 321, through hole 3211, return spring 322, support foot 323, elastic pressing assembly 33, socket frame 331, connecting frame 332, connecting hole 3321, push rod 333, device main body 34, stable wheel 341, connecting shaft 41, stable limit structure 50, limit gear ring 52, toothed limit member 51, guiding tension pulley 60, directional pulley 61, shaft type roller 62, universal roller 70, rotation limit structure 80, limit block 81, limit chute 82, shielding housing 90. Detailed implementation mode

[0028] The present invention will be further described below in conjunction with the embodiments shown in all the attached drawings: Embodiment 1 Reference Figures 1 - 6 , the present invention provides an electric pickaxe vehicle and an application method thereof for ramp construction in building decoration. In building decoration projects, such as the ramp of an underground garage, its surface is generally tiled or sprayed with an oxidized floor. During the traditional construction process, when an operator uses an electric pickaxe vehicle to perform demolition and crushing operations on the floor tiles or oxidized floor on the ramp, due to the influence of gravity, the electric pickaxe vehicle has a tendency to slide down the ramp, forcing the operator to continuously pull or resist the electric pickaxe vehicle, which not only increases the operation difficulty but also causes the worker to quickly fatigue and reduces work efficiency.

[0029] The purpose of this embodiment is to solve the above problems, so that when the operator performs brick shoveling operations on the ramp, the electric pickaxe vehicle can achieve autonomous parking on the ramp, that is, it can maintain a stable position on the ramp without the operator continuously applying force. More importantly, in the parked state, the electric pickaxe vehicle can still perform controlled feeding, enabling the operator to continuously operate at different positions without worrying about the equipment sliding down, thereby significantly improving the operation comfort and work efficiency.

[0030] As Figure 1 shown ( Figure 1Schematic diagram of the application of the electric pickaxe vehicle on the ramp), the electric pickaxe vehicle mainly includes four core parts: an installation frame 10 with two walking wheels, an electric pickaxe device 20, a ramp parking device 30, and a control handle 40. Among them, the installation frame 10 serves as the basic support structure of the entire device, consisting of a vehicle chassis 11 and a connecting bracket 12. The vehicle chassis 11 is provided with rolling wheels 111 at its rear end (tail), and the connecting bracket 12 includes an arc bracket 121 and an installation support rod 122. The lower end of the arc bracket 121 is connected to the rear end of the vehicle chassis 11, one end of the installation support rod 122 is connected to the middle of the arc bracket 121, and the other end is connected to the front end of the vehicle chassis 11. The electric pickaxe device 20 is installed on the installation support rod 122 and faces the front end (head) of the installation frame 10, and is used to perform the actual brick shoveling and crushing work; the control handle 40 is connected to the hinge point on the arc bracket 121 through a rotating arm, and extends towards the rear end (tail) of the installation frame 10 as a whole, facilitating the operator to hold and control from the rear, and is for the operator to hold and control; the ramp parking device 30 is cleverly arranged between the control handle 40 and the installation frame 10, and as the core innovation point of the present invention, it is used to realize the stable parking and controllable feeding functions of the electric pickaxe vehicle on the ramp.

[0031] It should be noted that the electric pickaxe device 20, as a mature product on the market, has various specifications and models to choose from, belongs to the prior art, and is not the innovation point of the present invention. Therefore, the complete structure thereof is not shown in detail in this embodiment, and the specific structure and working principle of the ramp parking device 30 of the present invention are mainly introduced.

[0032] The ramp parking device 30, as the core innovation part of the present invention, is mainly composed of four functionally complementary components. Refer to Figures 2 - 3 : The device main body 34 elastically connected to the tail of the installation frame 10 along the traveling direction of the rolling wheels at the front end, a retractable traction assembly 31, an elastic foot assembly 32, and an elastic pressing assembly 33. These four components work together to jointly realize the stable parking and controllable feeding functions of the electric pickaxe vehicle on the ramp. The specific structure and functions are as follows: The retractable traction assembly 31 is mainly used to provide a traction force upward on the ramp to offset the downward sliding trend of the electric pickaxe vehicle due to gravity on the ramp. When the operator advances the operation from the lower part to the upper part of the ramp, this assembly can assist in resisting the downward sliding force of the electric pickaxe vehicle, ensuring that the electric pickaxe vehicle can remain relatively stable without the continuous support of the operator within a certain slope range (generally applicable to slopes not exceeding 25°). To adapt to the working environments of different slopes, this assembly can also be provided with a winding force adjustment mechanism. By adjusting the pre-tightening force of the winding spring 313, the traction belt 311 can provide a traction force matching the slope angle, thereby expanding the applicable range of the device and enabling it to maintain a good working state on ramps with a larger slope.

[0033] AsFigure 4 As shown, the rewinding traction assembly 31 is mainly composed of three core components: a traction belt 311, a rolling return shaft 312, and a coil spring 313. Among them, the traction belt 311 is made of high-strength wear-resistant polyester fiber or nylon composite material, with good tensile strength and wear resistance. A special fixing device - a metal eyelet is provided at the free end. The operator can firmly fix it to the ramp ground through the metal eyelet in cooperation with ground nails or other fixing tools, so that a reliable and detachable connection is formed between the traction belt 311 and the ground on the ramp. The other end bypasses the guiding and tensioning wheel 60 on the connection bracket 12 to the rolling return shaft 312, and is wound and connected to the rolling return shaft 312 through a reliable fixing structure. By setting the guiding and tensioning wheel 60, it is ensured that the traction belt 311 is in a tensioned state, not easily slackened, and multiple force application points are formed for the traction of the electric pickaxe vehicle by the traction belt 311, ensuring stable traction of the electric pickaxe vehicle; the rolling return shaft 312 is installed on the device main body 34 through a bearing structure and can freely rotate around its axis. A coil spring 313 is coaxially sleeved inside it. The coil spring 313 is set so that the winding force acts on the rolling return shaft 312. The coil spring 313 is made of high-elasticity high-quality spring steel material. When the traction belt 311 is pulled out, the coil spring 313 will gradually twist and store energy. When the control handle 40 is released, the stored elastic potential energy is released under appropriate conditions, driving the rolling return shaft 312 to rotate in the reverse direction, making the traction belt 311 automatically retract, thereby providing an upward traction force to assist in offsetting the downward sliding trend of the electric pickaxe vehicle on the slope.

[0034] The elastic support foot assembly 32 is mainly used to provide additional support points to give strong support when the mounting frame 10 carrying the electric pickaxe device 20 makes a feeding movement, enhancing the stability of the whole machine on the slope. As Figure 3As shown, the elastic support foot assembly 32 includes three main components: a resilient plate 321, a return spring 322, and a support foot 323. The resilient plate 321 is made of high-strength alloy material and is movably connected to the device main body 34 through a hinge shaft. The hinge shaft is made of stainless steel to ensure that the resilient plate 321 can swing smoothly up and down around the hinge point. The resilient plate 321 is provided with a through hole 3211 for the traction belt 311 to pass through and connect to the rolling return shaft 312. A special stable limiting structure 50 is provided at the lower part of the resilient plate 321 to abut against the rolling return shaft 312 and limit its rotation in the downward pressure state. The return spring 322 is a helical compression spring structure installed between the device main body 34 and the lower end of the resilient plate 321 to reliably hold the resilient plate 321 in the lifted position when there is no external force. The support feet 323 are two symmetrically arranged support structures made of high-strength steel and are firmly connected to the lower end of the resilient plate 321 by welding or bolt fixing. The bottom of the support feet 323 can be designed in two ways according to the use environment: one is a sharp design that can penetrate into the floor tile gap or soft ground to provide anchoring support; the other is a wide-surface rubber anti-slip design that can form a high-friction contact with the hard and smooth ground. When the resilient plate 321 is pressed down, the support feet 323 are in full contact with the ground, providing puncture fixation or frictional support according to the ground material, effectively preventing the electric pickaxe vehicle from sliding and laterally offsetting on the slope.

[0035] The elastic pressing assembly 33 precisely controls the working states of the retractable traction assembly 31 and the elastic support foot assembly 32 by the up and down swing movement of the control handle 40. As Figure 4 shown, the elastic pressing assembly 33 consists of two main components: a socket frame 331 and a connecting frame 332, which form an elastic socket connection structure through an internal telescopic spring (not shown in the figure). Both the socket frame 331 and the connecting frame 332 are made of high-strength steel pipe material, having good rigidity and durability. One end of the socket frame 331 is firmly fixed to an appropriate position of the control handle 40 by bolts, and the other end forms a telescopic sleeve structure with the connecting frame 332. A transverse push rod 333 is provided at the lower end of the connecting frame 332 for reliably and separably contacting the traction belt 311 and the resilient plate 321.

[0036] It should be particularly noted that the connection between the socket frame 331 and the control handle 40 needs to meet specific angle requirements. As Figure 2 shown, in the non-feeding state of the electric pickaxe vehicle (i.e., when the control handle 40 is not pressed down), the included angle a between the central axis of the socket frame 331 and the plane of the vehicle chassis 11 facing the tail side is designed as an acute angle (recommended to be 60° - 75°). The core purpose of this design is to ensure that when the control handle 40 rotates around its hinge point with the connecting bracket 12, the push rod 333 can generate a horizontal component force in the forward direction, which is beneficial to the tightening of the traction belt 311 and the stability of the electric pickaxe vehicle.

[0037] The stable limit structure 50 includes tooth-shaped limit members 51 symmetrically arranged on the elastic plate 321 and limit gear rings 52 symmetrically arranged on the rolling return shaft 312. After the elastic plate 321 is pressed down, the tooth-shaped limit members 51 are engaged with the limit gear rings 52, and the engagement is automatically separated after the elastic plate 321 rebounds. This gear engagement is achieved simultaneously during the process of the elastic pressing component 33 pressing the rewinding traction component 31 and the elastic support foot component 32, without additional operations, which is convenient for use.

[0038] Furthermore, the tooth-shaped limit members 51 are designed as two split structures connected by a hinge structure. The advantage of this is that when the tooth-shaped limit members 51 are engaged with the limit gear rings 52 and limit the rotation of the rolling return shaft 312, the tooth-shaped limit members 51 have a certain amount of movement space through the hinge structure, enabling the tooth-shaped limit members 51 to allow the elastic plate 321 to continue to descend while maintaining the engaged locking state. This design cleverly separates the two functions of "locking the rolling return shaft 312" and "the elastic plate 321 continues to be pressed down", allowing the elastic plate 321 to be further pressed down a small distance after the gear engagement, so that the support feet 323 can form a more sufficient and stable contact with the ramp ground, improving the parking stability of the whole machine on the ramp. At the same time, this split hinge structure can also adaptively adjust the engagement position in different slope environments, ensuring that the locking mechanism can work reliably under various working conditions, greatly enhancing the applicable range and operation convenience of the electric pickaxe vehicle.

[0039] There are two guiding tension wheels 60 provided. Specifically, as Figure 3 shown, one is located at the top of the arc-shaped bracket 121 and is a directional pulley 61 to further ensure the force balance and center of gravity stability of the electric pickaxe vehicle, and to ensure the smooth operation of the electric pickaxe vehicle. The other is located at the rear end of the mounting support rod 122 and is located at the rear side of the top of the arc-shaped bracket 121, so that the traction belt 311 generates a forward tension force on the electric pickaxe device 20. Therefore, when the electric pickaxe device 20 shovels bricks and generates vibrations in the backward direction, the tension force of the traction belt 311 can resist part of the vibration and stably support the whole electric pickaxe vehicle.

[0040] The vehicle chassis 11 and the device main body 34 are elastically connected through a shock-absorbing spring (the shock-absorbing spring is not shown in the figure), and the shock-absorbing spring is protected within the shielding housing 90.

[0041] To ensure that the electric pickaxe vehicle is more stable during forward movement and parking. As Figure 3 shown, a stable wheel 341 is provided at the rear side of the device main body 34.

[0042] To enable the electric pickaxe vehicle to perform small-angle steering adjustment. As Figure 3As shown, the directional pulley 61 is movably connected to a universal roller 70 in the middle, and the guide tension wheel 60 located on the mounting support rod 122 is a roller pulley 62. When the electric pick truck is turned at a small angle by operating the handle, the traction belt wound on the directional pulley 61 can be turned through the universal roller 70 without wrinkling or deformation, and the roller pulley 62 can make the traction belt 311 slightly deflected on it without deformation or wrinkling, so the traction belt 311 always maintains a flat and tight state, ensuring the traction stability of the electric pick truck. During the feeding process of the electric pick truck, the guide tension wheel 60 and the coil spring 313 work together to ensure that the traction belt 311 always maintains a proper tension state. The specific working principle is as follows: when the elastic plate 321 is rebounded to separate the toothed limiter 51 from the limit gear ring 52, the rolling return shaft 312 starts to rotate under the rewinding force of the coil spring 313. At this time, the coil spring 313 releases the accumulated elastic potential energy, and drives the traction belt 311 to be evenly recovered through the rolling return shaft 312. The guide system formed by the directional pulley 61 and the roller pulley 62 enables the traction belt 311 to move along a predetermined path during the recovery process to prevent slack or deviation. In particular, when the electric pickaxe vehicle needs to make a small angle turn, the universal roller 70 built into the directional pulley 61 can automatically adjust with the turning angle, so that the traction belt 311 always maintains a flat and tensioned state without wrinkles during the turning process; at the same time, the long axis design of the roller pulley 62 allows the traction belt 311 to produce a small displacement in the axial direction, further adapting to the tension change during the turn. This design ensures that the traction belt 311 can provide stable and uniform traction under any operating conditions, effectively preventing the traction belt 311 from escaping from the guide system or producing irregular stretching, and greatly improving the control stability and operating reliability of the electric pick truck on the slope.

[0043] To limit the movement range of the control handle 40, it is convenient to operate the control handle 40. Figure 5 As shown, the control handle 40 is hinged to the connection hole 3321 of the arc bracket 121 through the connection shaft 41 thereon, and a rotation limiting structure 80 capable of limiting the upper limit of the rotation of the control handle 40 is provided between the control handle 40 and the connection bracket 12.

[0044] Specifically, the rotation limiting structure 80 includes a limiting block 81 provided on the outer wall of the connecting shaft 41 and a limiting sliding groove 82 provided on the inner wall of the connecting hole 3321, and the limiting block 81 is located and rotates in the limiting sliding groove 82. Therefore, the upward rotation of the control handle 40 has an upper limit, which prevents the operator from easily converting the thrust into the centripetal force of the upward rotation due to the unobstructed upward rotation when lifting the control handle 40 and pushing it forward, resulting in unsmooth forward pushing.

[0045] Further, the limit block 81 is detachably mounted on the outer wall of the connecting shaft by a plugging method. When it is necessary to rotate the control handle 40 by a larger angle, the limit block 81 can be pulled out of the connecting shaft 41 to realize the self-rotation of the control handle 40 in a complete circle.

[0046] When an operator uses this device, the downward pressing process of the control handle can be clearly divided into two stages, and each stage realizes different functions: The first stage: realizing the ramp parking function When the operator starts to press down the control handle 40, the elastic pressing component 33 moves along a preset track. First, its push rod 333 slides and contacts the upper surface of the elastic plate 321. Continuing to press down causes the elastic plate 321 to move downward against the elastic force of the return spring 322 until the toothed limit structure 50 (including the toothed limit member 51) at the lower part of the elastic plate 321 abuts against and meshes with the limit tooth ring 52 on the rolling return shaft 312, locking the rotation of the rolling return shaft 312 and preventing the traction belt 311 from loosening. At the same time, the support foot 323 moves downward with the elastic plate 321 and fully contacts the ramp ground. At this time, the electric pickaxe vehicle forms a stable rear push support structure under the support of the support foot 323. In this stage, the electric pickaxe vehicle realizes stable parking on the ramp and can maintain a stable position on the ramp without the operator continuously supporting it.

[0047] The second stage: realizing the ramp feeding control On the basis of the first stage, the operator further presses down the control handle 40, and the connecting frame 332 compresses and moves in the socket frame 331 against the resistance of the telescopic spring. At this time, the push rod 333 moves horizontally towards the front end of the vehicle under the action of the rear push support structure formed by the device main body 34 and presses the traction belt 311, causing the traction belt 311 to be squeezed at the roller pulley 62. Since the front end of the traction belt 311 is fixed above the ramp and is in a taut state, and due to the elastic buffer characteristic provided by the shock-absorbing spring between the device main body 34 and the vehicle chassis 11, the further downward pressing force of the operator will be converted into a forward propulsion force through the squeezing point at the roller pulley 62, thereby realizing the controllable feeding movement of the electric pickaxe vehicle on the ramp.

[0048] This squeezing point formed at the roller pulley 62 is the key to realizing the feeding control because it can ensure that the downward pressing force is accurately converted into a forward thrust along the ramp while keeping the traction belt 311 in a taut state and avoiding slack or deviation during the feeding process.

[0049] This phased design cleverly utilizes the single action of the operator pressing down on the control handle. By pressing down to different degrees, it realizes two functions: parking lock and controllable feeding respectively. The first stage ensures the stability and safety of the electric pickaxe vehicle on the slope, and the second stage enables the electric pickaxe vehicle to move forward a certain distance on the basis of stability to complete the precise positioning of the brick shoveling operation. Such a design greatly improves the efficiency and safety of slope operation and reduces the labor intensity of the operator.

[0050] The working process is as follows: 1. Preparation stage: First, firmly fix the metal eyelet at the free end of the traction belt 311 to the end position (higher position) of a row of floor tiles on the slope through a ground nail or other fixing device. Then, push the electric pickaxe vehicle to the starting position of brick shoveling (lower position). During the pushing process, the traction belt 311 will slowly unwind and stretch from the rolling return shaft 312, and at the same time, the coil spring 313 accumulates elastic potential energy to provide traction for resisting downward sliding later.

[0051] 2. Realization of parking state: When the electric pickaxe device 20 needs to perform brick shoveling operation at a specific position, the operator can press down on the control handle 40 using his own body weight. At this time, the control handle 40 rotates around the hinge point with the connecting bracket 12. According to the lever principle, the vertically downward force is converted and transmitted to the elastic pressing assembly 33 through the lever action of the control handle 40. The elastic pressing assembly 33 then produces key actions: The push rod 333 moves forward and downward along the preset trajectory. The push rod 333 presses down on the elastic plate 321, overcoming the elastic force of the return spring 322, causing the elastic plate 321 to move downward, driving the support foot 323 to move downward until it firmly touches the slope surface, and the slope parking device 30 forms a stable rear support.

[0052] 3. Activation of the locking mechanism: As the elastic plate 321 moves downward, the toothed limiting member 51 at its lower part precisely meshes with the limiting tooth ring 52 on the rolling return shaft 312, thereby locking the rotation of the rolling return shaft 312 and preventing the traction belt 311 from slackening and retracting. The toothed limiting member 51 adopts a two-piece structure connected by hinges, so that after meshing, the elastic plate 321 can still continue to press down a small distance to ensure full contact between the support foot 323 and the ground. At this time, the electric pickaxe vehicle forms a three-point stable support structure: the contact point of the front electric pickaxe device 20, the contact point of the middle support foot 323, and the contact point of the rear rolling wheel 111 form a firm triangle support, enabling the electric pickaxe vehicle to stably park on the slope for operation even without continuous support from the operator.

[0053] 4. Function of the handle locking mechanism: To reduce the fatigue of operators during long-term operation, this electric pickaxe vehicle is also equipped with a handle locking mechanism (common structures in the prior art, such as ratchet buckle locking mechanisms, rotary thread locking mechanisms, or spring pin locking devices, etc.). After the operator presses the handle down to the in-place position, the operator can activate this locking mechanism to temporarily fix the control handle 40 in the depressed position. In this way, the operator does not need to continuously apply force to maintain the depressed state, and can adjust the posture or take a short break, greatly reducing the work burden.

[0054] 5. Realization of controllable feeding and repetitive operation: When the electric pickaxe device 20 needs to move forward to the next position after completing the brick shoveling operation at a certain place on the slope, with the slope parking device 30 in a stable rear support state, the operator moderately presses down on the control handle 40 using his own body weight. At this time, the push rod 333 presses the traction belt 311. Since the front end of the traction belt 311 is fixed above the slope and is in a fully taut state, and combined with the elastic connection characteristics provided by the shock-absorbing spring between the slope parking device 30 and the vehicle frame, the downward pressure of the operator will be converted into a forward thrust. This thrust is mainly transmitted at the roller-type pulley 62, enabling the electric pickaxe vehicle to smoothly move a short distance upward along the slope against gravity to complete the feeding. This feeding method cleverly utilizes the lever principle and weight conversion, enabling the operator to control the precise movement of the electric pickaxe vehicle without excessive force, greatly reducing the operation difficulty and physical consumption.

[0055] During the continuous repetitive operation process, after each feeding is completed, the operator needs to slightly loosen the downward pressure on the handle (but not completely release it), so that the support feet 323 remain in slight contact with the ground, appropriately push the electric pickaxe vehicle forward to make the slope parking device 30 follow to a new position, and then increase the downward pressure to re-lock the position and start the next operation. This "feeding - locking - operation - feeding" cycle method enables the electric pickaxe vehicle to continuously and stably work on the slope, effectively avoiding the problem of easy sliding of traditional equipment.

[0056] To ensure that the operator can use the electric pickaxe vehicle efficiently and safely at different slope angles, the following best operating postures are recommended: When operating on a slope with an angle not exceeding 15°, the operator should keep the body slightly forward-leaning, hold the control handle 40 with both hands, and use the weight of the upper body to naturally press down on the control handle 40. At the same time, keep both feet standing stably on the slope, so that parking and locking can be easily achieved; When operating on a relatively steep slope with an angle between 15° - 25°, the operator should adopt a more forward-leaning standing posture, step forward with one foot and push backward with the other foot to form a triangular support structure, and transfer about 60% of the body weight forward through the control handle 40 to the device. This can not only make full use of the body weight to form an effective lever effect but also maintain self-balance. During the feeding process, the operator should first slightly lift the control handle 40 to release the ground contact of the support foot 323, and then use the waist strength to push forward and moderately press down the control handle 40, converting the body weight downward pressure into forward thrust through the lever principle. This operation method using the combination of body weight and lever can significantly reduce the burden on the arm muscles, reduce fatigue, and improve the continuous working ability.

[0057] Embodiment 2 The present invention provides an application method of an electric pickaxe vehicle in the construction of a ramp during building decoration. This method is based on the structure design of the electric pickaxe vehicle described in Embodiment 1, and focuses on elaborating its application steps, operation skills, and effect evaluation during the actual construction process to maximize the functional advantages of the electric pickaxe vehicle and improve construction efficiency and operation safety.

[0058] I. Application Environment Analysis and Preliminary Preparation Ramp Environment Assessment Slope Measurement: Use a professional slope measuring instrument to determine the slope angle. This method is applicable to the construction of ramps within the range of 5° - 25°.

[0059] Ground Material Analysis: Select the appropriate model of the support foot 323 according to the ground material (floor tiles, oxidized floor, cement floor, etc.). For hard and smooth ground, choose a wide-surface rubber anti-slip support foot, and for floor tile surfaces, choose a sharp support foot.

[0060] Operation Area Planning: Divide the ramp into several working sections at intervals of 2 - 3 meters to facilitate systematic construction and progress management.

[0061] Equipment Adjustment and Preparation Traction Force Adjustment: Adjust the pre-tightening force of the coil spring 313 according to the slope angle. For every 5° increase in the slope, increase the pre-tightening force of the coil spring 313 by about 15% to ensure sufficient upward traction force at different slopes.

[0062] Installation confirmation of the support feet 323: Select and confirm the correct model of the support feet 323 according to the ground material to ensure that effective anchoring support or high-friction support can be formed when the support feet 323 contact the ground.

[0063] Equipment function test: Before the formal construction, conduct tests on core functions such as parking lock and controllable feed to ensure that the actions of each mechanism are flexible and the locking is reliable.

[0064] II. Construction method steps Initial positioning and fixation Selection of the anchoring point at the top of the slope: Select a firm anchoring point at the top of the ramp (or the upper end of the current construction section). This point should be located on the central axis of the construction area to ensure that the electric pickaxe vehicle can run along a straight track during the operation.

[0065] Fixation of the traction belt 311: Unroll the traction belt 311 of the retractable traction assembly 31 and firmly fix it to the selected anchoring point using a metal eyelet and a special ground nail (it is recommended to use a steel expansion bolt with a diameter of not less than 8 mm and a length of not less than 60 mm).

[0066] Tension confirmation of the traction belt 311: After fixation, gently pull the traction belt 311 to confirm that its connection to the anchoring point is firm and the guiding path on the directional pulley 61 and the roller pulley 62 is correct without deviation.

[0067] Sectional operation implementation method Top-down operation method: Divide the ramp from top to bottom into multiple working sections, with the width of each section being approximately 1.5 times the working width of the electric pickaxe device 20, and construct them in sequence from top to bottom. This method is applicable to the situation where the slope is relatively steep (15° - 25°), which is beneficial to making full use of gravity to assist the electric pickaxe vehicle to move downward.

[0068] Bottom-up operation method: Divide the ramp from bottom to top into multiple working sections and construct them in sequence from bottom to top. This method is applicable to the situation where the slope is relatively gentle (5° - 15°), which is beneficial to accurately controlling the construction quality and boundaries.

[0069] Standard operation cycle Initial parking lock: After the electric pickaxe vehicle is in place, the operator presses down the control handle 40 to the first stage, causing the elastic plate 321 to move downward, the support feet 323 to fully contact the ground, and the toothed limit member 51 to engage with the limit gear ring 52 to achieve automatic parking lock.

[0070] Single-point chiseling operation: Start the electric pickaxe device 20 and carry out the brick chiseling or surface layer breaking operation at the current position until the operation at this point is completed.

[0071] Micro-feed control: The operator further presses down the control handle 40 to the second stage, uses the push rod 333 to squeeze the traction belt 311 to create a forward thrust, and controls the jackhammer vehicle to feed forward by 10 - 15 cm.

[0072] Repeat cyclic operation: Release the pressure to the first stage, lock the new position, and continue the chiseling operation. Repeat this cycle until the current working section is completed.

[0073] Lateral displacement technology Z-shaped propulsion method: When a longitudinal construction line is completed, use the steering function of the universal roller 70 to move the jackhammer vehicle along a Z-shaped path to an adjacent longitudinal operation line. This technology can ensure uniform coverage of the construction area without omission.

[0074] Displacement and anchoring technology: When the lateral displacement exceeds 1.5 times the working width of the jackhammer device 20, it is recommended to reselect the anchoring point and fix the traction belt 311 to ensure that the traction force direction is consistent with the operation direction and improve the operation stability.

[0075] Coping methods for special situations Treatment of local high-strength areas: For high-strength areas that appear on the ground (such as areas with dense steel bars or extremely hard concrete areas), adopt the "point-line-plane" step-by-step breaking method. First, form a breaking boundary around the area, and then concentrate on treating the central area.

[0076] Treatment of irregular edges: Utilize the disassembly function of the rotation limit structure 80 to remove the limit block 81, so that the control handle 40 can obtain a greater rotation freedom, facilitating the operation of the jackhammer vehicle to handle complex areas at the edges of ramp roads or corners.

[0077] Construction in narrow areas: In areas with limited width, the installation angle of the jackhammer device 20 can be adjusted, and the flexible steering ability of the universal roller 70 can be utilized to achieve precise positioning construction.

[0078] III. Safety operation and efficiency improvement technologies Optimal operation posture Low-slope operation posture (5° - 10°): The operator stands about 50 cm behind the jackhammer vehicle, stands naturally, holds the control handle 40 with both hands, and uses the arm strength to control the pressing depth.

[0079] Medium-slope operation posture (10° - 15°): The operator stands about 40 cm behind the jackhammer vehicle, leans forward slightly, forms a triangular support with one foot in front and one foot behind, and uses the upper body weight to assist in pressing down the control handle 40.

[0080] High-slope operation posture (15° - 25°): The operator stands about 30 cm behind the electric pickaxe vehicle, with the body leaning forward significantly, the center of gravity lowered, the knees slightly bent, and about 60 - 70% of the body weight is used to press down on the control handle 40 to ensure stable control.

[0081] Continuous operation rhythm control Equipment maintenance and status monitoring Real-time inspection system: After each work section is completed, check the wear condition of the traction belt 311, the wear degree of the support foot 323, and the elasticity of the return spring 322 to ensure that the equipment remains in the best working condition continuously.

[0082] Preventive adjustment: When the slope angle changes significantly (the change exceeds 5°), readjust the pre-tightening force of the coil spring 313 to ensure that the traction force matches the slope angle.

[0083] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to the embodiments will be obvious to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the broadest scope consistent with the principles and novel features disclosed herein.

Claims

1. An electric pick hammer vehicle, characterized in that, Comprising: An installation frame provided with rolling wheels; A pneumatic pick device installed on the installation frame; A control handle hinged to the installation frame; A ramp parking device provided between the control handle and the installation frame, the ramp parking device comprising: A device main body connected to the installation frame; A retractable traction assembly including a traction belt, a rolling return shaft and a coil spring. One end of the traction belt can be connected to the ground, and the other end is connected to the rolling return shaft. The rolling return shaft is installed on the device main body, and the coil spring is configured to apply a winding force to the rolling return shaft; An elastic support foot assembly including a resilient plate, a return spring and a support foot. The resilient plate is movably connected to the device main body, the return spring is installed between the device main body and the resilient plate, and the support foot is connected to the resilient plate; An elastic pressing assembly connected to the control handle and provided with a push rod; Wherein, when the control handle is pressed down, the push rod pushes the resilient plate to move the support foot downward against the ground, realizing the parking and feed control of the pneumatic pick vehicle on the ramp.

2. The electric pick hammer vehicle according to claim 1, characterized in that, A stable limiting structure is provided at the lower part of the resilient plate. The stable limiting structure includes tooth-shaped limit members symmetrically arranged on the resilient plate and a limit gear ring symmetrically arranged on the rolling return shaft. After the resilient plate is pressed down, the tooth-shaped limit members mesh with the limit gear ring, and the meshing automatically separates after the resilient plate rebounds.

3. The electric pickaxe vehicle according to claim 2, wherein The tooth-shaped limit member is designed as two split structures connected by a hinge structure, so that the tooth-shaped limit member still allows the resilient plate to continue to move downward when meshing with the limit gear ring.

4. The electric pick hammer vehicle according to claim 1, wherein, The installation frame includes an arc-shaped bracket and an installation support rod. The arc-shaped bracket is connected to the installation frame, and the installation support rod is connected between the arc-shaped bracket and the installation frame; the traction belt is connected to the rolling return shaft through a guiding tensioning wheel provided on the installation frame. There are two guiding tensioning wheels, one of which is located at the top of the arc-shaped bracket and is a fixed pulley, and the other is located at the rear end of the installation support rod and is a roller-type pulley.

5. The electric pick hammer vehicle according to claim 4, wherein A universal roller is movably connected inside the middle of the fixed pulley.

6. The electric pickaxe vehicle according to claim 1, wherein, The installation frame and the device main body are elastically connected through a shock-absorbing spring, and the shock-absorbing spring is protected in a shielding housing; a stable wheel is provided at the rear side of the device main body.

7. The electric pickaxe vehicle according to claim 4, characterized in that, The control handle is hinged to the arc-shaped bracket through a connecting shaft, and a rotation limiting structure is provided between the control handle and the arc-shaped bracket to limit the upper rotation limit of the control handle.

8. A construction method for a ramp during building decoration using a pneumatic pick machine, characterized in that, Using the pneumatic pick vehicle according to any one of claims 1-7, comprising the following steps: Preparation step: Fix the free end of the traction belt at a specific position on the ramp, and push the pneumatic pick vehicle to the starting position for shoveling bricks. During this process, the traction belt unfolds and stretches from the rolling return shaft; Stopping step: The operator presses down the control handle, causing the push rod of the elastic pressing component to press down the elastic plate. The elastic plate moves downward against the elastic force of the return spring, driving the support feet to move downward until they contact the slope surface. At the same time, the toothed limiting member at the lower part of the elastic plate meshes with the limiting gear ring on the rolling return shaft, locking the rotation of the rolling return shaft, preventing the traction belt from loosening, and enabling the electric pickaxe vehicle to stably stop on the slope without continuous support from the operator. Operation step: In the stopped state, the electric pickaxe device performs demolition and crushing operations on the floor tiles or floor of the ramp. Feeding step: After the operation is completed, the operator continues to press down the control handle. When the support feet form a stable rear support state, the push rod presses the traction belt to form a clamp with the connecting bracket, enabling the electric pickaxe vehicle to move upward along the slope against gravity for a certain distance to complete the feeding. Repeating step: The operator slightly releases the downward pressure on the control handle, keeping the support feet in slight contact with the ground, pushing the electric pickaxe vehicle forward to a new position, and then increasing the downward pressure to re-lock the position and repeating the above operation step and feeding step until the construction of the entire ramp is completed.

9. The construction method of the ramp in building decoration using the electric pick hammer vehicle according to claim 8, characterized in that, When operating on a slope with a gradient not exceeding 15°, the operator keeps the body slightly forward-leaning, holds the control handle with both hands, and naturally presses down the control handle using the weight of the upper body while keeping the feet firmly standing on the slope.

10. The construction method of the ramp in building decoration by the electric pickaxe vehicle according to claim 8, characterized in that, When operating on a slope with a gradient between 15° - 25°, the operator adopts a forward-leaning standing posture, steps forward with one foot and kicks backward with the other foot to form a triangular support structure, and transfers about 60% of the body weight forward through the control handle to the device. During the feeding process, the operator first slightly raises the control handle to release the contact of the support feet with the ground, and then uses the waist strength to push forward while moderately pressing down the control handle, converting the downward body pressure into a forward thrust through the lever principle.

Images