Bending-free trolley walking mechanical mechanism facilitating trolley body locking

Abstract

The invention discloses a stooping-free trolley walking mechanical mechanism facilitating trolley body locking, and belongs to the technical field of trolleys. The problems that when a trolley body of an existing trolley is locked, an operator needs to bend down, the position of a storage rack is not flexible to adjust, the overall stability is poor, and carried heavy objects are prone to shaking and toppling are solved. The vehicle comprises a vehicle body, a locking assembly and an adjusting assembly. The vehicle body is composed of a base, wheels, a vehicle frame, a side rod and a storage rack capable of sliding up and down along a sliding rail. The locking assembly is installed at the upper end of the frame, an operator rotates a handle with anti-skid lines to drive a movable column, an adjusting base is made to rotate through a side column and a connecting rod, a locking wheel makes contact with the ground to achieve locking and unlocking of the vehicle body, and stooping operation is not needed. The adjusting assembly controls a piston to ascend and descend through an adjusting part to drive an adjusting frame and a fixing plate, and the position of the storage rack is flexibly adjusted. A weight increasing block is mounted at the bottom of the base; the use convenience, the adjustment flexibility and the overall stability of the trolley are improved, and the trolley is suitable for various object carrying scenes.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of trolleys, in particular to a hands-free trolley walking mechanism facilitating trolley body locking. BACKGROUND

[0002] Trolleys, as a basic and important means of transportation, play an indispensable role in logistics, warehousing, household moving and other fields. The core of its design is to improve the efficiency of moving, reduce the burden on manpower, and meet the diversified transportation needs in different scenarios. The optimization of traditional trolley technology mainly focuses on the core components such as the trolley body, wheels, handles, etc.: the trolley body is usually made of solid metal materials to ensure stability and durability when carrying heavy objects; the wheels are mostly made of rubber or plastic materials to provide good wear resistance and cushioning performance; the handle design focuses on ergonomics to provide a comfortable grip and control.

[0003] However, in terms of trolley locking mechanism, the existing technology has significant deficiencies. Traditional trolleys mostly rely on brake components matched with universal wheels to achieve trolley locking, which requires users to bend over or crouch down, increasing the complexity of use, especially in scenarios that require frequent locking, such as warehouse management, supermarket restocking, etc. Long-term operation can easily lead to user fatigue, affecting work efficiency. More importantly, for users with physical disabilities or existing waist injuries, this operation method brings great inconvenience and may even exacerbate the physical burden.

[0004] In view of the above problems, although some improved designs have been proposed, these designs often only fine-tune the existing brake system and fail to fundamentally solve the problem of users needing to bend over or crouch down to operate the brake components. For example, some designs try to reduce the degree of user bending by optimizing the position or shape of the brake components, but these improvements still cannot completely eliminate the need for users to bend over or crouch down to operate.

[0005] In comparison with existing trolley technology, we found that designs such as Chinese utility model patent CN204196969U "Folding Trolley" and CN218703349U "Locking Assembly and Trolley" have some innovations in specific functions, but still have deficiencies. Specifically, CN204196969U "Folding Trolley" provides a trolley with a simple folding mechanism that is easy to operate, solving the problem of large space occupation when carrying and storing the trolley. However, its locking mechanism still requires users to complete the locking process through specific operations (such as pinching the handle to unlock), and does not directly solve the problem of users needing to bend over or crouch down when locking the trolley. At the same time, in scenarios that require frequent locking and unlocking, this design may increase the operational burden on users.

[0006] CN218703349U "Locking assembly and trolley" proposes a trolley that can be converted between flat pushing and vertical pushing, and its locking assembly design is novel, which can realize the quick conversion of the trolley state. However, the locking operation of this design still requires the user to complete it through a specific action (such as applying force to the control lever), and it does not directly solve the problem of bending over or squatting when the user locks the trolley. In addition, although this trolley design considers different forms of conversion, there is still room for improvement in terms of overall stability and shelf adjustment flexibility to meet higher requirements for trolley stability and shelf flexibility in different scenarios.

[0007] In view of this, the present application proposes an innovative solution - a hands-free trolley walking mechanism that facilitates trolley locking. This mechanism, through ingenious mechanical structure design, realizes the hands-free locking function of the trolley, not only simplifying the operation process and reducing the complexity of use, but also greatly improving the user experience, especially suitable for scenarios that require frequent locking of the trolley and for users with physical disabilities. The present application aims to fill the gap in this field of existing technology, overcome the shortcomings of existing technology through innovative mechanical structure design, promote the further development and improvement of trolley technology, and meet diverse transportation needs. SUMMARY

[0008] The technical problem to be solved by the present application is to provide a hands-free trolley walking mechanism that facilitates trolley locking, to solve the problems of inconvenient trolley locking, poor adjustment flexibility, and insufficient overall stability in the field of trolley technology, and to overcome the limitations of existing trolleys, such as the need to bend over during locking, insufficient flexibility in adjusting the shelf position, and the tendency to sway or tip over when carrying heavy objects.

[0009] To achieve the above-mentioned goal, the present application adopts the following technical solutions: A hands-free trolley walking mechanism that facilitates trolley locking includes a trolley body, a locking assembly, an adjustment assembly, and a weight block.

[0010] The trolley body includes a base, wheels, a frame, side rods, and a shelf. The base is U-shaped and made of high-strength metal material, with wheels installed at the four corners through bearings. The wheels have a brake device to enable temporary parking. The frame is installed vertically on the base and fixed by welding to ensure firm connection. The side rods are installed in the middle of the frame and serve as auxiliary support and positioning. The shelf is installed on the frame and has sliding blocks on both sides. The frame has corresponding sliding rails, and the shelf can slide up and down along the sliding rails to adjust the position and meet the placement needs of different height objects.

[0011] Locking assembly: installed on the upper end of the frame, including lock sleeve, movable column, handle, side column, connecting rod, adjusting seat, fixed column and locking wheel. The lock sleeve is fixedly installed on the upper end of the frame, the movable column is installed in the lock sleeve, and rotation around its own axis is realized through the bearing, the handle is symmetrically installed on both sides of the movable column, the surface of the handle is provided with anti-skid lines, and the operator is convenient to grasp. The side column is fixedly installed on the movable column, connected with the adjusting seat through the connecting rod, the connecting rod is hingedly connected with the side column and the adjusting seat at both ends, and flexible rotation is realized. The adjusting seat is rotatably installed on the fixed column, the fixed column is fixedly installed on the inner side of the base, and the locking wheel is installed on the adjusting seat. The surface of the locking wheel is made of rubber material, and the friction force with the ground is increased. When the vehicle body needs to be locked, the operator does not need to bend over, only needs to hold the handle and rotate, drives the movable column to rotate, and then drives the adjusting seat to rotate through the side column and the connecting rod, so that the locking wheel contacts the ground and generates enough friction force, and the locking of the vehicle body is realized. When unlocking, the handle is reversely rotated, and the locking wheel is separated from the ground.

[0012] Adjusting assembly: installed on the vehicle body, including adjusting component, piston, connecting block, adjusting frame and fixed plate. The adjusting component is a hydraulic cylinder or an electric push rod, which is installed on the upper end of the base and fixed by bolts. The piston is installed on the output end of the adjusting component, the connecting block is installed on the upper end of the piston and fixed by welding or screw connection. The adjusting frame is installed on the connecting block, the adjusting frame is a rectangular frame structure, the fixed plate is installed on the adjusting frame, and the fixed plate is connected with the storage rack by bolts. The lifting of the piston is controlled by the adjusting component, and then the adjusting frame and the fixed plate are driven to move up and down, so that the position of the storage rack is flexibly adjusted. The adjusting component is provided with a control switch, and the operator can accurately control the lifting height of the storage rack through the control switch.

[0013] Weight block: installed at the bottom of the base, made of high-density metal material, such as cast iron. The shape and size of the weight block are designed according to the overall structure of the trolley and the load demand, and the weight block is fixed at the bottom of the base by bolts, which is used to reduce the center of gravity of the trolley and enhance the stability.

[0014] In addition, the main components such as the vehicle body, the locking assembly, the movable column and the fixed column are made of metal materials such as stainless steel or aluminum alloy, and the surface is treated with anti-rust paint or electroplating to improve the corrosion resistance of the components and prolong the service life of the trolley. Limiting parts such as limiting blocks or limiting pins are installed on the back of the frame to limit the rotation range of the movable column and prevent excessive rotation from damaging the components.

[0015] In order to achieve the above purpose, the application adopts the following technical scheme: The application provides a hands-free trolley walking mechanical mechanism which is convenient for locking the vehicle body, and has the following beneficial effects: 1. The present application effectively solves the problem of inconvenient operation of the trolley body locking in the trolley technical field. When locking the trolley body of the traditional trolley, the user needs to bend over or squat to operate the pedal universal wheel supporting brake components, which is a complicated process and increases the use complexity. The present application sets the locking assembly on the upper end of the frame and realizes the bending-free locking and unlocking through component linkage, greatly simplifying the operation process.

[0016] 2. The present application overcomes the drawback that the traditional trolley locking method is easy to cause fatigue of the user, especially for the user group with physical inconvenience or existing waist injury. The bending-free design reduces the use difficulty and labor intensity, and significantly improves the use convenience.

[0017] 3. The bending-free trolley walking mechanical mechanism for conveniently locking the trolley body provided by the present application enables the user to complete the trolley body locking and unlocking without bending over or squatting, which is simple and convenient to operate, improves the operation efficiency, and makes the trolley use experience better.

[0018] 4. The present application solves the problem of insufficient flexibility of the trolley shelf position adjustment, and innovatively adopts the adjusting assembly to control the piston lifting through the adjusting component, drives the adjusting frame and the fixed plate, and provides the possibility for flexible adjustment of the shelf position.

[0019] 5. The shelf adjustment method of the present application is more flexible and accurate compared with the traditional method, can accurately adjust the shelf position according to the actual demand, meets the different requirements of placing articles, and greatly improves the flexibility of the shelf adjustment.

[0020] 6. The present application aims at the situation that the overall stability of the existing trolley is poor, increases the weight block at the bottom of the base to lower the center of gravity, effectively enhances the overall stability of the trolley, and changes the situation that the existing trolley is easy to shake and tip over.

[0021] 7. After installing the weight block at the bottom of the base, the trolley is not easy to shake or tip over when carrying heavy objects, reduces the safety hazards in the carrying process, and improves the safety and reliability of use.

[0022] 8. The mechanism of the present application has good applicability and can meet the transportation demand in different scenes. Whether it is on flat road or in complex environment, it can stably play a role and show wide applicability.

[0023] 9. The present application is especially suitable for scenes where the trolley needs to be frequently locked. The bending-free locking design makes frequent operation easy, improves the work efficiency, and reduces the inconvenience of the user.

[0024] 10. The present application is of great significance to the user group with physical inconvenience. The innovative design fully considers the needs of this group of people, enabling them to use the trolley more easily, and showing the innovation value and practical prospect in the trolley technical field. BRIEF DESCRIPTION OF DRAWINGS

[0025] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a rear view of the overall structure of the present invention; Figure 3 This is a schematic structural diagram of the weight-increasing block of the present invention; Figure 4 It is a structural schematic diagram of the locking assembly of the present invention; Figure 5 It is a structural schematic diagram of the regulating assembly of the present invention; Figure 6 It is a structural schematic diagram of the regulating assembly of the present invention; In the figure: vehicle body 100, base 101, wheel 102, frame 103, storage rack 104, side rod 105, locking assembly 200, locking sleeve 201, movable column 202, handle 203, side column 204, connecting rod 205, adjustment seat 206, fixed column 207, locking wheel 208, spring 300, adjustment assembly 400, adjustment component 401, piston 402, connecting block 403, fixing plate 404, adjustment frame 405, weight block 500. DETAILED DESCRIPTION

[0026] The technical solutions of the present invention are further described below with reference to the accompanying drawings and embodiments.

[0027] Example 1 like Figures 1 to 6 As shown, this embodiment provides a walking mechanical mechanism of a trolley that is easy to lock the vehicle body without bending over. The overall design of the trolley is intended to achieve convenient locking and flexible adjustment to meet diverse article carrying needs.

[0028] like Figure 1 As shown, the body 100, serving as the basic structure of the entire trolley, includes a base 101. The base 101 is U-shaped, providing high structural strength and stability. Wheels 102 are mounted at the four corners of the base 101. These wheels are made of wear-resistant rubber, a material with excellent wear resistance and anti-slip properties. This material is adaptable to various floor conditions, such as concrete and tiled floors, ensuring the trolley's stability during movement.

[0029] like Figure 2 and Figure 3As shown, the trolley body 100 is provided with a frame 103 and a storage rack 104, the frame 103 provides a support frame for the whole trolley, the side rod 105 is installed at the middle part of the frame 103, which further enhances the overall structural strength of the frame and prevents the frame from deforming when carrying heavy objects. The frame 103 is provided with several layers of storage racks 104, and the storage racks 104 are adjustable on the frame 103. The position of the storage rack 104 can be flexibly adjusted according to the size and shape of the carried objects, thereby improving the space utilization.

[0030] As shown in Figure 4 The locking assembly 200 is installed on the frame 103 and is one of the key components of the trolley. The locking sleeve 201 of the locking assembly 200 is installed on the upper end of the frame 103, and the other end of the locking sleeve 201 is connected to the movable column 202. The handle 203 and the side column 204 are respectively installed on both sides of the movable column 202, and the handle 203 is rotationally connected with the movable column 202. When it is necessary to lock the trolley, the handle 203 is rotated to drive the side column 204 to rotate together. The fixed column 207 is arranged inside the base 101, and the adjusting seat 206 is rotationally connected to the fixed column 207, and the bottom end of the adjusting seat 206 is provided with the locking wheel 208. The adjusting seat 206 is connected with the side column 204 through the connecting rod 205. When the side column 204 rotates, the adjusting seat 206 is driven to rotate through the connecting rod 205, so that the direction of the locking wheel 208 is perpendicular to the direction of the wheel 102, thereby forming an obstacle and preventing the wheel 102 from rolling, and achieving the locking of the trolley. The spring 300 is installed on the side of the connecting rod 205, and the spring 300 connects the connecting rod 205 with the side rod 105. When it is necessary to unlock the trolley, the handle 203 is reversely rotated, and under the action of the spring 300, the side column 204, the connecting rod 205, the adjusting seat 206 and the locking wheel 208 assembly are quickly reset, the locking wheel 208 is away from the ground, and the wheel 102 returns to the free rolling state.

[0031] As shown in Figure 5 and Figure 6 The adjusting assembly 400 is installed on the frame 103 and is used to adjust the distance between the adjusting frame 405 and the storage rack 104. The adjusting component 401 of the adjusting assembly 400 is selected as a gas cylinder, the gas cylinder is installed on the upper end of the base 101, the piston 402 of the gas cylinder is used as an output end, and the adjusting frame 405 is connected through the connecting block 403. The bottom of the adjusting frame 405 is provided with a fixed plate 404, and the bottom of the fixed plate 404 is provided with a positioning cavity, which can enhance the stability of the adjusting frame 405. When it is necessary to adjust the distance between the adjusting frame 405 and the storage rack 104, the piston 402 of the gas cylinder is controlled to rise and fall, thereby driving the adjusting frame 405 to move up and down, so as to meet the placement requirements of objects of different sizes.

[0032] The trolley body 100, the locking assembly 200, the movable column 202, the fixed column 207 and the adjusting assembly 400 are all made of metal materials, such as stainless steel or aluminum alloy.

[0033] The back of the trolley frame 103 is also provided with a limiting component for limiting the rotation range of the movable column 202, which can effectively prevent the movable column 202 from rotating excessively. If the movable column 202 rotates excessively, it may cause the locking wheel 208 or the trolley wheel 102 to collide with other components of the trolley body, causing damage to the components and affecting the normal use of the trolley. The provision of the limiting component provides a guarantee for the normal operation of the trolley.

[0034] As shown in Figure 3 The trolley body 100 is provided with a weight block 500 at an appropriate position, which can be installed at a suitable position according to actual conditions, such as the bottom of the base 101. The provision of the weight block 500 can effectively lower the center of gravity of the trolley, making the trolley more stable during the placement of goods or movement, reducing the risk of shaking and tipping over.

[0035] Embodiment 2 In another preferred embodiment, based on embodiment 1, this embodiment also provides a hands-free trolley walking mechanism for locking the trolley body, which differs from embodiment 1 in the material of some components and the specific implementation of the adjusting assembly.

[0036] The base 101 of the trolley body 100 still adopts a U-shaped structure, but the trolley wheel 102 is made of high-strength plastic material. This plastic material has the characteristics of light weight while ensuring a certain wear resistance, which can reduce the overall weight of the trolley and facilitate transportation and movement.

[0037] The trolley frame 103, the side rod 105 and the storage rack 104 have the same structure as in embodiment 1. The side rod 105 is installed in the middle of the trolley frame 103 to enhance the structural strength, and the storage rack 104 is adjustable on the trolley frame 103 to meet the placement needs of different goods.

[0038] The structure and working principle of the locking assembly 200 are consistent with those of embodiment 1. The locking sleeve 201 is installed on the upper end of the trolley frame 103 and connected to the movable column 202. The handles 203 on both sides of the movable column 202 and the side columns 204 cooperate to rotate the side columns 204 by rotating the handles 203, and then rotate the adjusting seat 206 through the connecting rod 205 to make the locking wheel 208 touch the ground or leave the ground, realizing the locking and unlocking of the trolley. The spring 300 connects the connecting rod 205 and the side rod 105 for resetting of the assembly.

[0039] The adjusting assembly 400 in the embodiment adopts an electric push rod as the adjusting component 401. The electric push rod is installed on the upper end of the base 101, and the output end thereof is connected to the adjusting frame 405 through a connecting block 403. When it is necessary to adjust the distance between the adjusting frame 405 and the storage rack 104, the adjusting frame 405 is driven to move up and down by controlling the extension and retraction of the electric push rod. The electric push rod has the advantages of high control precision and smooth operation, and can more accurately adjust the position of the adjusting frame 405 to meet the placement requirements of different articles. The fixed plate 404 at the bottom of the adjusting frame 405 and the design of the positioning cavity thereof are the same as those in Embodiment 1, and play a role in enhancing stability.

[0040] The components such as the vehicle body 100, the locking assembly 200, the movable column 202, and the fixed column 207 are also made of metal materials to ensure structural stability and durability. The setting and role of the limiting component at the back of the vehicle frame 103 and the weight block 500 on the vehicle body 100 are consistent with those in Embodiment 1, and the limiting component prevents the movable column 202 from being excessively rotated, and the weight block 500 enhances the stability of the trolley.

[0041] Embodiment 3 In another preferred embodiment, on the basis of Embodiments 1 and 2, the present embodiment provides a hands-free trolley walking mechanism facilitating locking of the vehicle body, which continues the characteristics of convenient locking and flexible adjustment of the foregoing embodiments in overall design, and optimizes some structural details and material selection.

[0042] The base 101 of the vehicle body 100 is made of high-strength aluminum alloy by integral forming process, which makes the base 101 have better overallity and structural strength and can withstand greater weight without being easily deformed. The base 101 still has a U-shaped structure, and the wheels 102 installed at the four corners thereof are made of polyurethane material. The wheels 102 made of polyurethane material have the advantages of good elasticity, wear resistance, and tear resistance, and can effectively buffer vibration during movement to reduce the impact on the vehicle body and the transported articles, and can also adapt to various complex ground environments, such as rough cement ground and greasy ground.

[0043] The vehicle frame 103 is welded from a carbon steel square tube, which has high strength and rigidity and can provide stable support for components such as the storage rack 104. The side rods 105 are installed in the middle of the vehicle frame 103 and are connected to the vehicle frame 103 by bolt fastening, which facilitates disassembly and installation and is convenient for maintenance and repair of the vehicle body. The vehicle frame 103 is provided with three layers of storage racks 104, and the storage racks 104 are made of plastic grid plate material, which has the advantages of light weight, good ventilation, and low cost, and is suitable for placing various articles, especially some articles that need ventilation, such as vegetables and fruits. The storage racks 104 are connected to the vehicle frame 103 through sliding rails and can slide up and down along the vehicle frame 103 to realize flexible adjustment of the position.

[0044] The locking assembly 200 is installed on the upper end of the frame 103. The lock sleeve 201 is made of nylon material, which has the characteristics of wear resistance and self-lubrication, can reduce the friction between the movable column 202 and the lock sleeve 201, and prolong the service life of the components. The movable column 202 is made of stainless steel material, which has high strength and corrosion resistance. The handles 203 on both sides of the movable column 202 are designed with ergonomics, and the surface has anti-slip texture, which is convenient for the operator to hold and rotate. The side column 204 is connected with the movable column 202 through a key, which ensures the synchronization and stability during rotation. The fixed column 207 is installed on the reinforcing plate inside the base 101, which further enhances the installation stability of the fixed column 207. The adjusting seat 206 is connected with the fixed column 207 through a bearing, which makes the rotation of the adjusting seat 206 more flexible. The locking wheel 208 is made of rubber material, and the surface has convex anti-slip lines, which increases the friction with the ground and improves the locking effect. The connecting rod 205 is made of aluminum alloy material, which is light in quality and sufficient in strength. The spring 300 is selected as a compression spring, and its elastic coefficient is accurately calculated to ensure that the side column 204 and other components are quickly reset when unlocked.

[0045] The adjusting component 401 of the adjusting assembly 400 is a hydraulic cylinder. The hydraulic cylinder is installed on the upper end of the base 101, and the lifting of the piston 402 is controlled by the hydraulic system. The connecting block 403 is connected with the piston 402 and the adjusting frame 405 through bolts, which ensures the stability of the connection. The adjusting frame 405 adopts an aluminum alloy frame structure, which is light in quality and high in strength. The fixed plate 404 is welded with the adjusting frame 405, and a rubber shock pad is installed in the positioning cavity to reduce vibration and noise during adjustment.

[0046] The main components such as the vehicle body 100, the locking assembly 200, the movable column 202, and the fixed column 207 are made of metal materials, and the surface is treated with anti-rust treatment such as painting or electroplating to improve the corrosion resistance of the components and prolong the service life of the trolley. The limiting component installed on the back of the frame 103 is a limiting bolt, and by adjusting the position of the limiting bolt, the rotation range of the movable column 202 can be accurately controlled to prevent excessive rotation and damage to the components. The weight block 500 is made of cast iron material and is installed at the four corners of the bottom of the base 101, which effectively lowers the center of gravity of the trolley and enhances the stability.

[0047] Example 4 In another preferred embodiment, based on examples 1, 2, and 3, this embodiment provides a hands-free trolley walking mechanical mechanism that is convenient for locking the vehicle body, which is consistent with the previous embodiments in function implementation, but has new characteristics in structure design and technical application.

[0048] The base 101 of the vehicle body 100 is made of glass fiber reinforced plastic. The glass fiber reinforced plastic has the advantages of light weight, high strength and corrosion resistance, and is suitable for use in some occasions with high requirements for weight and corrosion resistance. The U-shaped structure of the base 101 is designed with reinforcing ribs to further improve the structural strength of the base. The wheels 102 are made of solid rubber tires. The solid rubber tires do not need to be inflated, avoiding the risk of tire blowout, and have good wear resistance and puncture resistance, and can be used normally in bad road conditions.

[0049] The frame 103 is made of stainless steel pipe. The stainless steel pipe has a smooth surface and good corrosion resistance. The bending process makes the frame 103 have a unique shape and good mechanical properties. The side rod 105 is connected to the frame 103 by welding and bolting, ensuring the firmness of the connection. Two layers of shelves 104 are provided on the frame 103. The shelves 104 are made of wooden boards, which give a natural and warm feeling, suitable for placing some high-quality materials such as handicrafts and food. The shelves 104 are connected to the frame 103 by buckles, making installation and removal convenient and fast.

[0050] The lock sleeve 201 of the locking assembly 200 is installed in a specially designed groove on the upper end of the frame 103, increasing the installation stability of the lock sleeve. The movable column 202 is made of titanium alloy, which has the advantages of high strength, low density and corrosion resistance, effectively reducing the overall weight of the trolley. The handle 203 is designed as a foldable type, which can be folded up when not in use, reducing the occupied space. The side column 204 is connected to the movable column 202 through a spline, improving the reliability and transmission efficiency of the connection. The fixed column 207 is installed on a metal bracket inside the base 101, which is connected to the base 101 by bolts, facilitating disassembly and maintenance. The adjusting seat 206 is connected to the fixed column 207 by a ball bearing, making the rotation of the adjusting seat 206 smoother. The locking wheel 208 is made of high-strength plastic material, with metal inlaid anti-slip strips on the surface, ensuring the strength of the locking wheel and improving the anti-slip performance. The connecting rod 205 is made of carbon fiber material, with high strength and low weight. The spring 300 is a torsion spring installed between the movable column 202 and the lock sleeve 201, which resets the assembly through torsion.

[0051] The adjusting component 401 of the adjusting assembly 400 is an electric screw. The electric screw is installed on the upper end of the base 101 and driven by a motor to rotate the screw, thereby lifting the piston 402. The connecting block 403 is connected to the piston 402 and the adjusting frame 405 by rivets, ensuring the firmness of the connection. The adjusting frame 405 is made of a plastic frame structure, which is light in weight and low in cost. The fixed plate 404 is bonded to the adjusting frame 405 by glue, and the positioning cavity is filled with sponge, which plays a role in shock absorption and buffering.

[0052] The components such as the vehicle body 100, the locking assembly 200, the movable column 202, the fixed column 207, etc. are made of metal materials and non-metal materials according to different use requirements, and corresponding surface treatments such as polishing of metal materials and coating treatment of non-metal materials are performed to improve the performance and appearance quality of the components. The limiting component installed at the back of the frame 103 is an electronic limiting sensor, which sends a signal to control the rotation to stop when the movable column 202 rotates to the set position, realizing accurate limiting control. The weight block 500 is made of concrete material and is installed at the middle of the base 101. According to the gravity distribution of the trolley, the weight block is reasonably configured to enhance the stability of the trolley.

[0053] In the preferred scheme, the base 101 is in a U-shaped structure, and the wheels 102 are made of wear-resistant rubber or plastic material and are installed at the four corners of the base 101. The above arrangement makes the base 101 have a stable structure and the wheels 102 have a reasonable layout. The wheels 102 made of wear-resistant material can prolong the service life and adapt to different ground conditions.

[0054] In the preferred scheme, the vehicle body 100 further includes a side rod 105 installed at the middle of the frame 103. The frame 103 is provided with a plurality of shelves 104, and the shelves 104 are adjustable on the frame 103. The above arrangement can enhance the overall structural strength of the frame 103, and the adjustable shelves 104 can meet the diversified requirements of placing articles.

[0055] In the preferred scheme, the locking assembly 200 includes a lock sleeve 201 installed at the upper end of the frame 103, and the other end of the lock sleeve 201 is connected to the movable column 202. The movable column 202 is provided with a handle 203 and a side column 204 on both sides, respectively. The handle 203 is rotationally connected to the movable column 202, and rotating the handle 203 drives the side column 204 to rotate together. The above arrangement realizes flexible operation of the locking assembly 200. The end of the side column 204 is designed with a buckle structure, which can tightly cooperate with the corresponding clamping groove on the frame 103 to realize stable locking. The whole locking process is simple and fast, effectively improving the safety and convenience of the frame 103.

[0056] In the preferred scheme, the locking assembly 200 further includes a fixed column 207 placed inside the base 101, and a adjusting seat 206 is rotationally connected to the fixed column 207. The bottom end of the adjusting seat 206 is provided with a locking wheel 208, and the adjusting seat 206 is connected to the side column 204 through a connecting rod 205. The above arrangement allows the locking wheel 208 to fit and lock on different specifications of workpieces, enhancing the applicability and stability of the device. The design of the connecting rod 205 allows the adjusting seat 206 to adjust the angle flexibly, ensuring that the locking assembly 200 can tightly fit the surface of the workpiece to realize stable locking.

[0057] In the preferred scheme, the direction of the locking wheel 208 is 90° to the wheel 102, when the locking wheel 208 touches the ground, the wheel 102 is blocked from rolling, realizing the locking of the trolley; the above setting makes the trolley be able to quickly and effectively prevent the rotation of the wheel 102 by the contact friction force between the locking wheel 208 and the ground when it needs to be parked or kept stable, ensures that the trolley is stable and does not slide, and improves the convenience and safety of use.

[0058] In the preferred scheme, the spring 300 is installed on the side of the connecting rod 205, and the spring 300 connects the connecting rod 205 and the side rod 105, which is used for resetting the side column 204, the connecting rod 205, the adjusting seat 206 and the locking wheel 208 assembly; the above setting ensures that the device can quickly return to the initial state after being adjusted at different positions through the elastic force of the spring 300, improves the convenience and stability of operation, and the buffering effect of the spring 300 also effectively protects the components from hard impact.

[0059] The locking assembly 200 of the present application has a clever structure, and the trolley can be locked and unlocked by simply operating the handle 203, and the spring 300 ensures that the assembly can quickly reset.

[0060] In the preferred scheme, the adjusting assembly 400 is installed on the frame 103 and is used for adjusting the distance between the adjusting frame 405 and the storage rack 104; the above setting makes the user can flexibly adjust the storage space according to the size of different articles, and improves the storage efficiency. At the same time, the adjusting assembly 400 adopts a simple lock design, which is convenient for the user to quickly operate, and enhances the convenience of use.

[0061] In the preferred scheme, the adjusting assembly 400 comprises an adjusting component 401 installed on the upper end of the base 101, the adjusting component 401 is connected with the adjusting frame 405 through a connecting block 403 at the output end, and the adjusting frame 405 is installed with a fixed plate 404 at the bottom, and the fixed plate 404 is provided with a positioning cavity at the bottom; the above setting makes the adjusting assembly 400 can flexibly adjust the distance between the adjusting frame 405 and the storage rack 404, and the positioning cavity can enhance the stability of the adjusting frame.

[0062] In the preferred scheme, the adjusting component 401 is a gas cylinder, the piston 402 of the gas cylinder is lifted to drive the adjusting frame 405 to move up and down, and the distance between the adjusting frame 405 and the storage rack 104 is adjusted; the above setting adopts the gas cylinder as the adjusting component 401, and the adjusting process is stable, accurate and easy to control.

[0063] In the preferred scheme, the storage rack 104 is located above the frame 103 and is used for placing articles to be carried, and the adjusting frame 405 adjusts the height through the adjusting assembly 400 to adapt to the placing requirements of articles of different sizes, and such a design makes the trolley better adapt to various articles and improves the universality thereof.

[0064] In the preferred scheme, the trolley body 100, the locking assembly 200, the movable column 202, the fixed column 207 and the adjusting assembly 400 are all made of metal materials, ensuring the structural stability and durability; the above settings have high strength and good wear resistance, which can ensure the stable performance of the trolley during long-term use.

[0065] In the preferred scheme, the back of the trolley frame 103 is also provided with a limiting component for limiting the rotation range of the movable column 202, to prevent the movable column 202 from excessive rotation and causing damage to the locking wheel 208 or the trolley wheel 102; the above settings provide protection for the normal operation of the trolley, avoiding damage to the components due to improper operation.

[0066] In the preferred scheme, the weight block 500 is added to the appropriate position of the trolley body 100 to enhance the stability of the trolley; the setting of the weight block can effectively lower the center of gravity of the trolley, making it more stable during the placement of goods or movement.

[0067] In summary, the present application provides a hands-free trolley walking mechanism for locking the trolley body, which solves the problem of inconvenient operation of the trolley body locking in the trolley technical field. When locking the trolley body of the traditional trolley, the user often needs to bend over or squat to operate the pedal universal wheel brake component, increasing the complexity of use and causing fatigue after multiple operations, which is not suitable for users with physical discomfort or waist injury. The present application provides a mechanism that overcomes the limitations of the prior art, such as inconvenient operation and poor user experience. The existing trolley locking requires bending over, while the locking assembly 200 of the present application is installed on the upper end of the trolley frame 103, and the operator rotates the anti-slip handle 203, which drives the movable column 202, the side column 204 and the connecting rod 205 to rotate the adjusting seat 206, allowing the locking wheel 208 to contact the ground to lock or unlock the trolley body 100, without the need to bend over. The adjusting assembly 400 of the present application controls the piston 402 to rise and fall through the adjusting component 401, driving the adjusting frame 405 and the fixed plate 404 to achieve flexible adjustment of the trolley shelf 104. In view of the poor stability of the existing trolley, the present application installs a weight block 500 at the bottom of the base 101 to lower the center of gravity. The present application integrates various structures to form a complete mechanism, solving multiple problems. The locking assembly 200 is designed cleverly, and the adjusting assembly 400 can accurately and flexibly adjust the position of the trolley shelf 104. The combination of the design improves the convenience, flexibility and stability of the trolley, and embodies higher creativity.

[0068] In summary, the present application provides a convenient to lock the body of the handcart without bending down walking mechanical mechanism, to solve the problem of the handcart in the field of technology, the operation of the body of the handcart is not convenient, in particular, when the traditional handcart needs to lock the body, the user often needs to bend down or squat to operate the brake parts matched with the universal wheel, this process not only increases the complexity of use, but also causes fatigue of the user in the continuous operation process, especially not suitable for the user group with physical inconvenience or waist injury.

[0069] The present application provides a convenient to lock the body of the handcart without bending down walking mechanical mechanism, to overcome the limitations of the prior art, the operation is not convenient, the user experience is poor; the existing handcart needs to bend down when locking the body, while the present application installs the locking assembly 200 on the upper end of the frame 103, the operator rotates the anti-skid pattern handle 203, drives the movable column 202 through the side column 204 and the connecting rod 205 to rotate the adjusting seat 206, makes the locking wheel 208 contact with the ground to realize the locking and unlocking of the body 100, without bending down operation; the position of the handcart shelf 104 is not flexible enough, the adjusting assembly 400 of the present application controls the piston 402 lifting through the adjusting component 401, drives the adjusting frame 405 and the fixed plate 404, realizes the flexible adjustment of the position of the shelf 104; in view of the problem of poor overall stability of the existing handcart, the present application installs the weight block 500 on the bottom of the base 101 to lower the center of gravity.

[0070] The present application organically integrates the locking assembly 200, the adjusting assembly 400 and the weight block 500, and forms a complete set of convenient to lock the body of the handcart without bending down walking mechanical mechanism, solves the problems of the existing handcart; the design of the locking assembly 200 is ingenious, and the locking and unlocking of the body without bending down is realized through a series of component linkage; the adjusting assembly 400 can accurately and flexibly adjust the position of the shelf 104, combined with the design of the locking assembly 200 and the weight block 500, the handcart is significantly improved in use convenience, adjusting flexibility and overall stability, and has high technical superiority.

Claims

1. A walking mechanism for a trolley that facilitates locking of the trolley body without bending over, characterized in that: The vehicle body (100) includes a base (101), a wheel (102) is installed at the bottom of the base (101), a frame (103) and a storage rack (104) are provided on the vehicle body (100), a locking assembly (200) is installed on the frame (103), and an adjustment assembly (400) is provided between the base (101) and the storage rack (104).

2. A walking mechanism for a trolley that facilitates locking of the trolley body without bending over according to claim 1, characterized in that: The base (101) is a U-shaped structure, and the wheels (102) are made of wear-resistant rubber or plastic and are installed at the four corners of the base (101).

3. The walking mechanism of a handcart that is convenient for locking the vehicle body without bending over according to claim 2, characterized in that: The vehicle body (100) further comprises a side rod (105), which is mounted in the middle of the vehicle frame (103). The vehicle frame (103) is provided with a plurality of layers of storage racks (104), and the storage racks (104) are adjustable on the vehicle frame (103).

4. The walking mechanism of a handcart that is convenient for locking the vehicle body without bending over according to claim 3, characterized in that: The locking assembly (200) includes a locking sleeve (201) mounted on the upper end of the vehicle frame (103). The other end of the locking sleeve (201) is connected to a movable column (202). A handle (203) and a side column (204) are respectively mounted on both sides of the movable column (202). The handle (203) is rotatably connected to the movable column (202). Rotating the handle (203) drives the side column (204) to rotate together.

5. The walking mechanism of a handcart that is convenient for locking the vehicle body without bending over according to claim 4, characterized in that: The locking assembly (200) further comprises a fixing column (207) disposed inside the base (101) and rotatably connected to an adjusting seat (206). A locking wheel (208) is mounted at the bottom end of the adjusting seat (206). The adjusting seat (206) is connected to the side column (204) via a connecting rod (205).

6. The walking mechanism of the handcart that is convenient for locking the vehicle body without bending over according to claim 5 is characterized in that: The direction of the locking wheel (208) is 90 degrees to the wheel (102). When the locking wheel (208) touches the ground, it blocks the wheel (102) from rolling, thereby locking the trolley.

7. The walking mechanism of the handcart that is convenient for locking the vehicle body without bending over according to claim 6 is characterized in that: A spring (300) is installed on the side of the connecting rod (205), and the spring (300) connects the connecting rod (205) and the side rod (105) and is used for resetting the side column (204), the connecting rod (205), the adjustment seat (206) and the locking wheel (208) assembly.

8. The walking mechanism of the handcart that is convenient for locking the vehicle body without bending over according to claim 7 is characterized in that: The adjustment assembly (400) is mounted on the vehicle frame (103) and is used to adjust the distance between the adjustment frame (405) and the storage rack (104).

9. The walking mechanism of a handcart that is convenient for locking the vehicle body without bending over according to claim 8, characterized in that: The adjustment assembly (400) comprises an adjustment component (401) mounted on the upper end of the base (101); an output end of the adjustment component (401) is connected to an adjustment frame (405) via a connecting block (403); a fixing plate (404) is mounted on the bottom of the adjustment frame (405); and a positioning cavity is provided at the bottom of the fixing plate (404).

10. The walking mechanism of a handcart that is convenient for locking the vehicle body without bending over according to claim 7, characterized in that: The adjusting component (401) is a cylinder, which is raised and lowered by the piston (402) of the cylinder. The piston (402) is connected to the adjusting frame (405) through the fixing plate (404), driving the adjusting frame (405) to move up and down, thereby adjusting the distance between the adjusting frame (405) and the storage rack (104).

Images