Skid steer loader and intelligent monitoring system

Abstract

The invention provides a skid loader and an intelligent monitoring system, and relates to the technical field of skid loaders. According to the skid steer loader, the effective working range of the movable arm is enlarged through stretching and retracting of the telescopic arm relative to the main arm, the accessory is made to rotate or move relative to the telescopic arm through the accessory adjusting mechanism, and therefore multi-directional movement of the accessory is achieved, and rapid disassembly, assembly and replacement of the standard connector accessory are achieved through accessory rapid replacement frames of various forms; the operation range and the degree of freedom of the skid steer loader are improved, and meanwhile, the accessories are rapidly replaced; according to the intelligent monitoring system, the whole vehicle is monitored in real time through the tilt angle sensor, the position sensor, the load sensor, the pressure sensor, the temperature sensor and the strain gauge, so that intelligent and accurate control over operation of the skid loader is achieved, and meanwhile visualization of all parameters during operation of the skid loader is achieved; and a user can know the operation condition of the skid loader in real time.

Description

Technical Field

[0001] The present invention relates to the technical field of skid steer loaders, and more specifically, to a skid steer loader and an intelligent monitoring system. Background Art

[0002] A skid steer loader, also known as a multi-functional engineering vehicle or multi-functional engineering machine, is a small construction machinery with a compact structure and flexible movement. The skid steer loader realizes vehicle steering by using the linear speed difference between the two side wheels, and is mainly used in occasions with narrow working sites, uneven ground, and frequent changes in working content. Currently, it is widely used in urban infrastructure, roads, construction sites, factory workshops, warehouse docks, ship decks, garden farms, etc. The skid steer loader can perform different operations such as shoveling, stacking, lifting, excavating, drilling, crushing, grasping, soil loosening and trenching, road sweeping, and road surface compaction by replacing various attachments.

[0003] However, for the existing skid steer loaders, their compact structures limit the working range, resulting in insufficient fork loading distance, discharge height, and discharge distance, and a small working range. Moreover, for most of the existing skid steer loaders, the hydraulic cylinders are directly hinged to the front end of the boom and the attachment frame, resulting in limited degrees of freedom of the attachments, and only one basic degree of freedom of movement can be achieved, making it difficult to meet the requirements of connecting different types of attachments to adapt to various working conditions. In addition, for the existing skid steer loaders, their attachment quick-change frames generally use a crank-slider mechanism to realize the up-and-down movement of the locking pin. This structure has a large manufacturing difficulty, a large number of parts, and is relatively troublesome for assembly and disassembly. Moreover, in order to achieve the designed movement effect, the part of the quick-change frame for auxiliary installation of the crank-slider mechanism also requires complex design, and its reliability is not easy to guarantee. In addition, the existing skid steer loaders have a low level of intelligence and low working safety, and need to be improved and perfected. Summary of the Invention

[0004] The purpose of the present invention is to provide a skid steer loader and an intelligent monitoring system to increase the working range and degrees of freedom of operation; to achieve rapid replacement of attachments on the basis of increasing the working range and degrees of freedom; and to perform real-time monitoring of the whole machine to improve working safety.

[0005] To achieve the above purpose, the technical solution adopted by the present invention is as follows:

[0006] A skid steer loader includes a loader body, a boom support frame, a boom, an attachment adjustment mechanism, an attachment quick-change frame, and an attachment;

[0007] The boom support frame is arranged on both sides of the loader body;

[0008] The boom includes a main boom and a telescopic boom;

[0009] The rear end of the main boom is hinged to the boom support frame. The first hydraulic cylinder is connected to the boom support frame and the main boom respectively. The first hydraulic cylinder drives the main boom to swing relative to the boom support frame;

[0010] The front end of the main boom is slidably connected to the rear end of the telescopic boom. The second hydraulic cylinder is connected to the main boom and the telescopic boom respectively. The second hydraulic cylinder drives the telescopic boom to extend or retract relative to the main boom;

[0011] The front end of the telescopic boom is hinged to the attachment adjusting mechanism. The third hydraulic cylinder is connected to the telescopic boom and the attachment adjusting mechanism respectively. The third hydraulic cylinder is used to change the tilt angle of the attachment adjusting mechanism relative to the telescopic boom;

[0012] The attachment adjusting mechanism is connected to the attachment through the attachment quick-change bracket. The attachment adjusting mechanism is used to change the position of the attachment relative to the telescopic boom.

[0013] Preferably, the attachment adjusting mechanism includes a housing, a power output mechanism and a slewing bearing;

[0014] The front end of the telescopic boom and the third hydraulic cylinder are respectively hinged to the housing;

[0015] The power output mechanism is arranged in the housing. The power output mechanism is connected to the inner ring of the slewing bearing. The inner ring of the slewing bearing is connected to the attachment quick-change bracket. The outer ring of the slewing bearing is connected to the housing. The power output mechanism drives the inner ring of the slewing bearing to rotate relative to the outer ring of the slewing bearing, thereby driving the attachment to rotate relative to the telescopic boom.

[0016] Preferably, the power output mechanism includes a servo motor and a planetary reducer;

[0017] The servo motor is arranged in the housing. The servo motor is power-connected to the sun gear of the planetary reducer;

[0018] The inner ring of the slewing bearing is connected to the ring gear of the planetary reducer.

[0019] Preferably, the attachment adjusting mechanism includes a guide seat, a sliding seat and a double-acting hydraulic cylinder;

[0020] The front end of the telescopic boom and the third hydraulic cylinder are respectively hinged to the guide seat;

[0021] The sliding seat is slidably connected to the guide seat. The attachment quick-change bracket is connected to the sliding seat;

[0022] The cylinder block of the double-acting hydraulic cylinder is connected to the guide seat. The piston rod of the double-acting hydraulic cylinder is connected to the sliding seat. The piston rods of the double-acting hydraulic cylinder move in the same direction, thereby driving the attachment to move laterally relative to the telescopic boom.

[0023] Preferably, a roller frame is arranged on the sliding seat. A plurality of rollers are installed on the roller frame. The rim of the roller contacts the guide seat;

[0024] An electromagnet is provided on the attachment quick-change frame, and a positioning groove cooperating with the electromagnet is formed on the sliding seat. When the electromagnet is energized, it generates magnetic force and adsorbs to the positioning groove.

[0025] Preferably, the attachment quick-change frame includes a frame plate, a locking motor, a transmission shaft, a telescopic assembly, a locking pin, and a guide cylinder;

[0026] The frame plate is connected to the attachment adjustment mechanism. The locking motor is arranged on the frame plate, and the locking motor is power-connected with a first helical gear;

[0027] A second helical gear meshing with the first helical gear is arranged in the middle of the transmission shaft, a third helical gear is arranged at the end of the transmission shaft, and a fourth helical gear meshing with the third helical gear is arranged on the frame plate;

[0028] One end of the locking pin is connected to the fourth helical gear through the telescopic assembly, the other end of the locking pin is slidably connected to the guide cylinder, and the guide cylinder is communicated with a locking hole;

[0029] The locking motor drives the first helical gear to rotate forward, so that the telescopic assembly drives the locking pin to extend out of the locking hole, and the locking pin abuts against the attachment; the locking motor drives the first helical gear to rotate reversely, so that the telescopic assembly drives the locking pin to retract into the locking hole, and the locking pin is separated from the attachment.

[0030] Preferably, the attachment quick-change frame includes a frame plate, a wrench, a telescopic assembly, a locking pin, and a guide cylinder;

[0031] The frame plate is connected to the attachment adjustment mechanism, and the wrench is hinged to the frame plate;

[0032] One end of the locking pin is connected to the wrench through the telescopic assembly, the other end of the locking pin is slidably connected to the guide cylinder, and the guide cylinder is communicated with a locking hole;

[0033] Pull the wrench forward to make the telescopic assembly drive the locking pin to extend out of the locking hole, and the locking pin abuts against the attachment; pull the wrench backward to make the telescopic assembly drive the locking pin to retract into the locking hole, and the locking pin is separated from the attachment.

[0034] Preferably, the attachment quick-change frame includes a frame plate, a locking motor, a lead screw shaft, a nut, a locking pin, and a guide cylinder;

[0035] The frame plate is connected to the attachment adjustment mechanism. The locking motor is arranged on the frame plate, the locking motor is power-connected to the lead screw shaft, and the nut is sleeved on the lead screw shaft;

[0036] One end of the locking pin is connected to the nut, the other end of the locking pin is slidably connected to the guide cylinder, and the guide cylinder is communicated with a locking hole;

[0037] The locking motor drives the lead screw shaft to rotate forward, so that the nut drives the locking pin to extend out of the locking hole, and the locking pin abuts against the attachment; the locking motor drives the lead screw shaft to rotate reversely, so that the nut drives the locking pin to retract into the locking hole, and the locking pin is separated from the attachment.

[0038] Preferably, a guide rail is provided on the inner side of the main arm, and a slider is provided on the telescopic arm. The slider is slidably engaged with the guide rail;

[0039] A dust cover is further provided between the end of the guide rail and the inner side of the main arm.

[0040] The present invention also provides an intelligent monitoring system, which is arranged on the above-mentioned skid steer loader. The intelligent monitoring system includes a control unit and an inclination sensor, a position sensor, a load sensor, a pressure sensor, a temperature sensor and a strain gauge that are signal-connected to the control unit;

[0041] The inclination sensors are respectively arranged on the main arm and the mounting plate; the position sensor is arranged on the piston rod of the second hydraulic cylinder; the load sensor is arranged in the guide cylinder; the pressure sensors are respectively arranged on the cylinder bodies of the first hydraulic cylinder, the second hydraulic cylinder and the double-acting hydraulic cylinder; the temperature sensor is arranged inside the fuel tank of the loader body; the strain gauges are respectively arranged on the main arm, the telescopic arm and the slewing bearing.

[0042] The beneficial technical effects of the present invention are:

[0043] 1. For the skid steer loader of the present invention, the maximum lifting height is increased by the extension and retraction of the telescopic arm relative to the main arm, thereby increasing the effective working range of the boom. The attachment adjustment mechanism is used to rotate or move the attachment relative to the telescopic arm, so as to realize the multi-directional movement of the attachment, thus meeting the requirements of adapting to various working conditions. In addition, the skid steer loader of the present invention also realizes the quick disassembly, installation and replacement of the standardized interface attachments through various forms of attachment quick-change brackets, realizing the quick replacement of the attachments while improving the operation range and freedom of the skid steer loader.

[0044] 2. For the intelligent monitoring system of the present invention, the whole vehicle is monitored in real time through the inclination sensor, position sensor, load sensor, pressure sensor, temperature sensor and strain gauge to realize the intelligent and precise control of the operation of the skid steer loader, and at the same time realize the visualization of various parameters during the operation of the skid steer loader, enabling the user to understand the operation status of the skid steer loader in real time, realizing preventive maintenance during the operation process, helping the user to reasonably arrange the maintenance plan, adjust the operation intensity, reduce the probability of sudden failures, and reduce the operation and maintenance costs. Description of the Drawings

[0045] Figure 1 It is a schematic structural diagram of a skid steer loader with a bucket as the attachment in Embodiment 1 of the present invention;

[0046] Figure 2 It is a schematic structural diagram of the loader body and the boom support frame in Embodiment 1 of the present invention;

[0047] Figure 3Schematic diagram of the boom support frame and the boom in Embodiment 1 of the present invention;

[0048] Figure 4 Schematic diagram of the main boom and the telescopic boom in Embodiment 1 of the present invention;

[0049] Figure 5 Cross-sectional view of the connection between the main boom and the telescopic boom in Embodiment 1 of the present invention;

[0050] Figure 6 For Figure 5 Partial enlarged view of A in

[0051] Figure 7 Schematic diagram of the attachment adjustment mechanism, the attachment quick-change bracket and the attachment in Embodiment 1 of the present invention Figure 1 ;

[0052] Figure 8 Schematic diagram of the attachment adjustment mechanism, the attachment quick-change bracket and the attachment in Embodiment 1 of the present invention Figure 2 ;

[0053] Figure 9 Exploded view of the attachment adjustment mechanism, the attachment quick-change bracket and the attachment in Embodiment 1 of the present invention;

[0054] Figure 10 Schematic diagram of the power output mechanism and the slewing bearing in Embodiment 1 of the present invention;

[0055] Figure 11 Schematic diagram of the movement range of the boom of the skid steer loader in Embodiment 1 of the present invention;

[0056] Figure 12 Schematic diagram of the skid steer loader with a fixture as the attachment in Embodiment 1 of the present invention;

[0057] Figure 13 Schematic diagram of the skid steer loader with a bucket as the attachment in Embodiment 2 of the present invention;

[0058] Figure 14 Schematic diagram of the attachment adjustment mechanism, the attachment quick-change bracket and the attachment in Embodiment 2 of the present invention Figure 1 ;

[0059] Figure 15 Schematic diagram of the attachment adjustment mechanism, the attachment quick-change bracket and the attachment in Embodiment 2 of the present invention Figure 2 ;

[0060] Figure 16 Exploded view of the attachment adjustment mechanism, the attachment quick-change bracket and the attachment in Embodiment 2 of the present invention;

[0061] Figure 17Schematic structure of the attachment adjustment mechanism, attachment quick-change frame and attachment in Embodiment 2 of the present invention Figure 3 ;

[0062] Figure 18 Schematic diagram of the structure of the attachment adjustment mechanism in Embodiment 2 of the present invention;

[0063] Figure 19 Schematic diagram of the structure of a skid steer loader with a road flattening device as the attachment in Embodiment 2 of the present invention;

[0064] Figure 20 Schematic structure of the attachment quick-change frame in Embodiment 3 of the present invention Figure 1 ;

[0065] Figure 21 Schematic structure of the attachment quick-change frame in Embodiment 3 of the present invention Figure 2 ;

[0066] Figure 22 Schematic structure of the attachment quick-change frame in Embodiment 4 of the present invention Figure 1 ;

[0067] Figure 23 Schematic structure of the attachment quick-change frame in Embodiment 4 of the present invention Figure 2 ;

[0068] Figure 24 Schematic structure of the attachment quick-change frame in Embodiment 5 of the present invention Figure 1 ;

[0069] Figure 25 Schematic structure of the attachment quick-change frame in Embodiment 5 of the present invention Figure 2 ;

[0070] Figure 26 Schematic diagram of the cab screen in Embodiment 6 of the present invention;

[0071] Wherein, 1 - loader body, 2 - boom support frame, 3 - boom, 31 - main boom, 311 - guide rail, 312 - dust cover, 32 - telescopic boom, 321 - slider, 331 - first hydraulic cylinder, 332 - second hydraulic cylinder, 333 - third hydraulic cylinder, 4 - attachment adjustment mechanism, 411 - housing, 412 - servo motor, 413 - planetary reducer, 414 - slewing bearing;

[0072] 421 - Guide seat, 422 - Sliding seat, 423 - Double - acting hydraulic cylinder, 424 - Roller frame, 425 - Roller, 426 - Electromagnet, 5 - Attachment quick - change frame, 501 - Frame plate, 502 - Locking motor, 503 - Telescopic assembly, 504 - Locking pin, 505 - Guide cylinder, 506 - Locking hole, 511 - Transmission shaft, 512 - First helical gear, 513 - Second helical gear, 514 - Third helical gear, 515 - Fourth helical gear, 521 - Wrench, 531 - Lead screw shaft, 532 - Nut, 6 - Attachment, 71 - Tilt sensor, 72 - Pressure sensor, 73 - Strain gauge. Detailed implementation mode

[0073] To make the objectives, technical solutions and beneficial effects of the present invention clearer and more understandable, the following further elaborates on the present invention in detail with reference to specific embodiments and the attached drawings. Some but not all of the embodiments of the present invention will be described more comprehensively with reference to the attached drawings later. In fact, various embodiments of the present invention can be implemented in many different forms and should not be construed as limited to the embodiments described herein; on the contrary, these embodiments are provided so that the present invention meets the applicable legal requirements.

[0074] In the description of the present invention, it should be noted that the orientation or positional relationships indicated by the terms "inner", "outer", "upper", "lower", "front", "rear", etc. are based on the orientation or positional relationships shown in the drawings. These are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0075] Embodiment 1

[0076] As Figures 1 to 12 shown, this Embodiment 1 describes a skid - steer loader, which includes a loader body 1, a boom support frame 2, a boom 3, an attachment adjustment mechanism 4, an attachment quick - change frame 5, and an attachment 6.

[0077] As Figure 1 and Figure 2 shown, the loader body 1 includes a chassis, a cab, etc. The boom support frames 2 are arranged on both sides of the loader body 1. In this embodiment, the boom support frames 2 are respectively arranged on the sides of the rear window of the cab.

[0078] As Figure 3 and Figure 4As shown in the figure, the present invention improves the effective working range of the skid steer loader through the telescopic boom 3, and the boom 3 includes a main boom 31 and a telescopic boom 32. The rear end of the main boom 31 is hinged to the boom support frame 2, and the first hydraulic cylinder 331 is respectively connected to the boom support frame 2 and the main boom 31. The first hydraulic cylinder 331 drives the main boom 31 to swing up and down relative to the boom support frame 2 through its own contraction and elongation. The front end of the main boom 31 is slidably connected to the rear end of the telescopic boom 32, and the second hydraulic cylinder 332 is respectively connected to the main boom 31 and the telescopic boom 32. The second hydraulic cylinder 332 drives the telescopic boom 32 to extend relative to the main boom 31 through its own elongation, and the second hydraulic cylinder 332 drives the telescopic boom 32 to retract relative to the main boom 31 through its own contraction.

[0079] As Figure 5 shown, in this embodiment, a guide rail 311 is further provided on the inner side surface of the main boom 31, and a slider 321 is provided on the telescopic boom 32. The slider 321 is slidably matched with the guide rail 311, so that the telescopic boom 32 has good controllability in extending and retracting relative to the main boom 31, a high extendable length, and compared with the traditional method of telescoping through a threaded rod, the telescopic boom 32 of the present invention has higher mechanical efficiency and faster telescoping speed.

[0080] As Figure 6 shown, a dust cover 312 is further provided between the end of the guide rail 311 and the inner side surface of the main boom 31.

[0081] In this embodiment, the maximum extension distance of the telescopic boom 32 is determined by the length of the guide rail 311 and the maximum force arm length, and the maximum lifting angle of the boom 3 is determined by the weight of the boom 3 and the diameter of the first hydraulic cylinder 331. According to different rated loads, the materials of the main boom 31 and the telescopic boom 32 can be various materials such as carbon steel and alloy steel by comprehensively considering factors such as price and performance. For example, if carbon structural steel Q235 is used, it can not only meet the performance requirements but also has reasonable manufacturing costs. Considering the bearing capacity and manufacturing cost comprehensively, the main boom 31 and the telescopic boom 32 can adopt different cross-sectional shapes, such as an equal-wall-thickness box-shaped cross-section.

[0082] When the main boom 31 needs to be lifted, the control lever controls the hydraulic pump in the loader body 1 to extract hydraulic oil from the hydraulic oil tank and supply it to the first hydraulic cylinder 331. The first hydraulic cylinder 331 extends forward, so as to achieve the purpose of lifting the main boom 31; when the main boom 31 needs to be lowered, the hydraulic oil in the first hydraulic cylinder 331 flows back to the hydraulic oil tank along the pipeline, causing the first hydraulic cylinder 331 to retract backward, so as to lower the main boom 31.

[0083] When the telescopic arm 32 needs to extend, the joystick controls the hydraulic oil in the rod end of the second hydraulic cylinder 332 to flow back to the hydraulic oil tank, and the hydraulic pump in the loader body 1 pumps the hydraulic oil in the hydraulic oil tank into the rodless end of the second hydraulic cylinder 332, pushing the second hydraulic cylinder 332 to move forward, thereby driving the telescopic arm 32 to extend forward along the guide rail 311; when the telescopic arm 32 needs to retract, the hydraulic oil in the rodless end of the second hydraulic cylinder 332 flows back to the hydraulic oil tank, and the hydraulic pump in the loader body 1 pumps the hydraulic oil in the hydraulic oil tank into the rod end of the second hydraulic cylinder 332, and the second hydraulic cylinder 332 pulls the telescopic arm 32 back along the guide rail 311.

[0084] In the skid steer loader of this embodiment, the front end of the telescopic arm 32 is hinged to the attachment adjustment mechanism 4, and the third hydraulic cylinder 333 is respectively connected to the telescopic arm 32 and the attachment adjustment mechanism 4. The third hydraulic cylinder 333 is used to change the inclination angle of the attachment adjustment mechanism 4 relative to the telescopic arm 32. The attachment adjustment mechanism 4 is connected to the attachment 6 through the attachment quick-change bracket 5. The attachment adjustment mechanism 4 is used to change the position of the attachment 6 relative to the telescopic arm 32, so as to realize the multi-directional movement of the attachment 6. In this embodiment, the front end of the telescopic arm 32 and the third hydraulic cylinder 333 are preferably hinged to the attachment adjustment mechanism 4 through ear seats respectively. The attachment 6 and the attachment quick-change bracket 5 are preferably connected in a detachable manner, which is convenient for connecting different types of attachments 6, so as to meet the requirements of various working conditions.

[0085] As Figure 7 and Figure 9 shown, in this embodiment, the attachment adjustment mechanism 4 includes a housing 411, a power output mechanism and a slewing bearing 414. The front end of the telescopic arm 32 and the third hydraulic cylinder 333 are respectively hinged to the housing 411. The power output mechanism is arranged in the housing 411. The power output mechanism is connected to the inner ring of the slewing bearing. The inner ring of the slewing bearing is connected to the attachment quick-change bracket 5, and the outer ring of the slewing bearing is connected to the housing 411. The power output mechanism drives the inner ring of the slewing bearing to rotate relative to the outer ring of the slewing bearing, and further drives the attachment 6 to rotate relative to the telescopic arm 32.

[0086] As Figure 10 shown, in this embodiment, the slewing bearing 414 includes an inner ring of the slewing bearing, rollers and an outer ring of the slewing bearing. The outer ring of the slewing bearing is sleeved on the inner ring of the slewing bearing and uses rollers to reduce friction. The power output mechanism includes a servo motor 412 and a planetary reducer 413. The planetary reducer 413 includes a sun gear, planetary gears, a planetary carrier and a ring gear. The planetary carrier is arranged in the housing 411. The sun gear and the planetary gears mesh with each other and are arranged on the planetary carrier. The servo motor 412 is arranged in the housing 411. The servo motor 412 is power-connected to the sun gear of the planetary reducer 413. The sun gear and the servo motor 412 are connected by a flat key. The inner ring of the slewing bearing is connected to the ring gear of the planetary reducer 413. The inner ring of the slewing bearing is also connected to the attachment quick-change bracket 5 through a hollow shaft.

[0087] For the material of the hollow shaft, considering various factors such as price and performance comprehensively according to different rated loads, medium carbon steel, alloy steel and other materials can be used. For example, if 45 steel is used, it can not only meet the performance requirements, but also the manufacturing cost is economical and reasonable.

[0088] When the attachment 6 needs to rotate, for example, when it needs to rotate clockwise, the servo motor 412 in the attachment adjustment mechanism 4 is controlled by the control lever to rotate counterclockwise, driving the sun gear to rotate counterclockwise at the same speed. Since the planetary carrier is fixed, the ring gear that has been decelerated rotates clockwise, driving the inner ring of the slewing bearing to rotate clockwise, thereby driving the attachment quick-change frame 5 connected to the inner ring of the slewing bearing to drive the attachment 6 to rotate.

[0089] In addition, the attachment adjustment mechanism 4 provided in this embodiment that can rotate the attachment 6 can also be applicable to a variety of working conditions, such as Figure 12 as shown, the attachment 6 can be replaced with a fixture.

[0090] Embodiment 2

[0091] As Figures 13 to 19 shown, this Embodiment 2 also describes a skid steer loader. Except for the following technical features that are different from those of the above Embodiment 1, the rest of the technical features can refer to the above Embodiment 1.

[0092] As Figures 14 to 17 shown, the attachment adjustment mechanism 4 includes a guide seat 421, a sliding seat 422 and a double-acting hydraulic cylinder 423.

[0093] The front end of the telescopic arm 32 and the third hydraulic cylinder 333 are respectively hinged to the guide seat 421.

[0094] The sliding seat 422 is slidably connected to the guide seat 421, and the attachment quick-change frame 5 is connected to the sliding seat 422.

[0095] The cylinder block of the double-acting hydraulic cylinder 423 is connected to the guide seat 421, the piston rod of the double-acting hydraulic cylinder 423 is connected to the sliding seat 422, and the piston rods of the double-acting hydraulic cylinder 423 move in the same direction, thereby driving the attachment 6 to move horizontally relative to the telescopic arm 32. In the direction as Figure 18 shown, the piston rods at the left and right ends of the double-acting hydraulic cylinder 423 are respectively connected to the sliding seat 422. When the piston rod at the left end of the double-acting hydraulic cylinder 423 extends and the piston rod at the right end of the double-acting hydraulic cylinder 423 shortens, the attachment 6 is driven to move to the left; similarly, when the piston rod at the left end of the double-acting hydraulic cylinder 423 shortens and the piston rod at the right end of the double-acting hydraulic cylinder 423 extends at the same speed as the piston rod at the left end of the double-acting hydraulic cylinder 423 shortens, the attachment 6 is driven to move to the right.

[0096] In this embodiment, a roller frame 424 is provided on the sliding seat 422, and a plurality of rollers 425 are installed on the roller frame 424. The rim of the roller 425 contacts the guide seat 421.

[0097] An electromagnet 426 is provided on the attachment quick-change frame 5, and a positioning groove cooperating with the electromagnet 426 is formed on the sliding seat 422. When the electromagnet 426 is energized, it generates a magnetic force and adsorbs to the positioning groove.

[0098] As Figure 19 shown, the attachment adjustment mechanism 4 that can laterally move the attachment 6 provided in this embodiment can be applied to various working conditions. For example, the attachment 6 can be replaced with a road flattening device.

[0099] Embodiment 3

[0100] As Figures 20 to 21 shown, Embodiment 3 of this also describes a skid steer loader. Except for the following technical features being different from those of Embodiment 1 above, the rest of the technical features can refer to Embodiment 1 above.

[0101] The attachment quick-change frame 5 includes a frame plate 501, a locking motor 502, a transmission shaft 511, a telescopic assembly 503, a locking pin 504, and a guide cylinder 505. In this embodiment, the telescopic assembly 503 uses a telescopic cylinder provided with a spring.

[0102] The frame plate 501 is connected to the attachment adjustment mechanism 4. The locking motor 502 is provided on the frame plate 501, and the locking motor 502 is power-connected to a first helical gear 512. A second helical gear 513 meshing with the first helical gear 512 is provided in the middle of the transmission shaft 511, a third helical gear 514 is provided at the end of the transmission shaft 511, and a fourth helical gear 515 meshing with the third helical gear 514 is provided on the frame plate 501. One end of the locking pin 504 is connected to the fourth helical gear 515 through the telescopic assembly 503, and the other end of the locking pin 504 is slidably connected to the guide cylinder 505. The guide cylinder 505 is communicated with a locking hole 506.

[0103] The locking motor 502 drives the first helical gear 512 to rotate forward, so that the telescopic assembly 503 drives the locking pin 504 to extend out of the locking hole 506, and the locking pin 504 abuts against the attachment 6. The locking motor 502 drives the first helical gear 512 to rotate reversely, so that the telescopic assembly 503 drives the locking pin 504 to retract into the locking hole 506, and the locking pin 504 is separated from the attachment 6.

[0104] When the attachment 6 needs to be replaced, first, the control lever controls the locking motor 502 to rotate counterclockwise in the upward view direction, driving the rotation of the first bevel gear 512. The motion is transmitted to the fourth bevel gear 515 through the second bevel gear 513 and the third bevel gear 514 in sequence. The fourth bevel gear 515 drives the telescopic cylinder to rotate, causing the locking pin 504 rotatably connected to the telescopic cylinder to lift upward, and the attachment 6 is removed. After aligning with the new attachment 6, the control lever then controls the locking motor 502 in the attachment quick-change frame 5 to rotate clockwise in the upward view direction, causing the locking pin 504 to move downward to lock the attachment 6.

[0105] Embodiment 4

[0106] As Figures 22 to 23 shown, this Embodiment 4 also describes a skid steer loader. Except for the following technical features being different from those of the above Embodiment 1, the remaining technical features can refer to the above Embodiment 1.

[0107] The attachment quick-change frame 5 includes a frame plate 501, a wrench 521, a telescopic assembly 503, a locking pin 504, and a guide cylinder 505. In this embodiment, the telescopic assembly 503 uses a telescopic cylinder provided with a spring.

[0108] The frame plate 501 is connected to the attachment adjustment mechanism 4, and the wrench 521 is hinged to the frame plate 501. One end of the locking pin 504 is connected to the wrench 521 through the telescopic assembly 503, and the other end of the locking pin 504 is slidably connected to the guide cylinder 505. The guide cylinder 505 is communicated with a locking hole 506. When the wrench 521 is pulled forward, the telescopic assembly 503 drives the locking pin 504 to extend out of the locking hole 506, and the locking pin 504 abuts against the attachment 6. When the wrench 521 is pulled backward, the telescopic assembly 503 drives the locking pin 504 to retract into the locking hole 506, and the locking pin 504 is separated from the attachment 6.

[0109] When the attachment 6 needs to be replaced, first, the wrench 521 is pulled inward to drive the telescopic cylinder to rotate, causing the locking pin 504 rotatably connected to the telescopic cylinder to lift upward, and the attachment 6 is removed. After aligning with the new attachment 6, the wrench 521 is pulled outward to drive the telescopic cylinder to rotate, causing the locking pin 504 to move downward to lock the attachment 6.

[0110] Embodiment 5

[0111] As Figures 24 to 25 shown, this Embodiment 5 also describes a skid steer loader. Except for the following technical features being different from those of the above Embodiment 1, the remaining technical features can refer to the above Embodiment 1.

[0112] The attachment quick-change frame 5 includes a frame plate 501, a locking motor 502, a lead screw shaft 531, a nut 532, a locking pin 504, and a guide cylinder 505.

[0113] The shelf plate 501 is connected to the attachment adjustment mechanism 4. The locking motor 502 is arranged on the shelf plate 501. The locking motor 502 is power-connected to the lead screw shaft 531. The output shaft of the locking motor 502 is connected to the lead screw shaft 531 through a diaphragm coupling and is respectively connected with a flat key to transmit motion. The nut 532 is sleeved on the lead screw shaft 531, and the nut 532 cooperates with the lead screw shaft 531. One end of the locking pin 504 is connected to the nut 532, and the other end of the locking pin 504 is slidably connected to the guide cylinder 505. The guide cylinder 505 is communicated with a locking hole 506. The locking motor 502 drives the lead screw shaft 531 to rotate forward so that the nut 532 drives the locking pin 504 to extend out of the locking hole 506, and the locking pin 504 abuts against the attachment 6. The locking motor 502 drives the lead screw shaft 531 to rotate reversely so that the nut 532 drives the locking pin 504 to retract into the locking hole 506, and the locking pin 504 is separated from the attachment 6.

[0114] When the attachment 6 needs to be replaced, first, the operating lever controls the locking motor 502 to rotate and drives the lead screw shaft 531 to rotate, thereby driving the nut 532 to drive the locking pin 504 to lift upward, so that the attachment 6 is unloaded; after aligning with the new attachment 6, the operating lever controls the locking motor 502 to rotate in the reverse direction, so that the locking pin 504 moves downward to lock the attachment 6.

[0115] Embodiment 6

[0116] An intelligent monitoring system is arranged on any one of the skid steer loaders described in Embodiments 1 to 5.

[0117] The intelligent monitoring system includes a control unit and an inclination sensor 71, a position sensor, a load sensor, a pressure sensor 72, a temperature sensor, and a strain gauge 73 that are signal-connected to the control unit.

[0118] The inclination sensors 71 are respectively arranged on the main boom 31 and the shelf plate 501 and are connected to the control unit through leads. Among them, the inclination sensor 71 arranged on the main boom 31 is located at the extreme position on the outer rear side of the lower half of the main boom 31. The position sensor is arranged on the piston rod of the second hydraulic cylinder 332. The load sensor is arranged in the guide cylinder 505. The pressure sensors 72 are respectively arranged on the cylinder bodies of the first hydraulic cylinder 331, the second hydraulic cylinder 332, and the double-acting hydraulic cylinder 423. The temperature sensor is arranged inside the fuel tank of the loader body 1.

[0119] The strain gauges 73 are respectively arranged on the main boom 31, the telescopic boom 32, and the slewing bearing 414 and are connected to the control unit through leads. Among them, the strain gauge 73 arranged on the main boom 31 is located at the extreme position on the inner rear side of the upper half of the main boom 31, and the strain gauge 73 arranged on the telescopic boom 32 is located at the extreme position on the inner rear side of the upper half of the telescopic boom 32. The strain gauge 73 arranged on the slewing bearing 414 is located at the maximum radius of the inner ring of the slewing bearing.

[0120] The intelligent monitoring system further includes an alarm unit signal - connected to the control unit. When the data uploaded by each sensor exceeds the set threshold, the control unit sends an alarm signal to the alarm unit. The intelligent monitoring system can monitor the working state of the skid - steer loader, facilitating early warning and handling of faults in a timely manner.

[0121] Sensor signal acquisition includes the acquisition of different types of signals transmitted by the above - mentioned strain gauges 73, position sensors, pressure sensors 72, inclination sensors 71, load sensors, and temperature sensors in each fuel tank to the control unit; signal processing includes analyzing different types of signals and processing them into corresponding parameters such as maximum stress, hydraulic cylinder elongation, hydraulic oil pressure, component inclination, lifting load, fuel tank temperature, etc.; data visualization includes visualizing the above - mentioned corresponding parameters and working time and displaying them on the cab screen; data monitoring and analysis includes real - time monitoring of the above - mentioned parameters. If the data is abnormal, the machine is stopped and an alarm is given to the operator, the abnormal information is displayed on the cab screen, an error report is generated and uploaded to the cloud database. If the data is normal, a work log is generated and uploaded to the cloud database; in addition, data monitoring and analysis also includes analyzing the remaining life of each component and the whole machine according to the number of times and time when each parameter reaches the preset threshold, displaying these data on the cab screen and uploading them to the cloud. Through the intelligent monitoring system, the visualization of each parameter during machine operation, automatic shutdown and alarm in case of abnormal work, and sharing of data to the cloud database are realized, achieving intelligent interconnection.

[0122] When the machine is working, the control unit real - time monitors the above - mentioned data and analyzes whether the data is normal: when the data is abnormal, the control unit manipulates the machine to stop working immediately and alarms the operator, the fault information is displayed on the cab screen, and at the same time, an error report is generated and uploaded to the cloud database; if the data is normal, a work log is generated and uploaded to the cloud database; in addition, the control unit analyzes the remaining life of each component according to the number of times and time when each parameter reaches the preset threshold, and comprehensively calculates the remaining life of the whole machine, and then displays these data on the cab screen and uploads them to the cloud database.

[0123] So far, the present embodiment has been described in detail with reference to the accompanying drawings. Based on the above description, those skilled in the art should have a clear understanding of a skid steer loader and an intelligent monitoring system of the present invention. For the skid steer loader of the present invention, the maximum lifting height is increased by extending and retracting the telescopic arm 32 relative to the main arm 31, thereby increasing the effective working range of the boom 3. The attachment adjustment mechanism 4 is used to rotate or move the attachment 6 relative to the telescopic arm 32, so as to realize the multi-directional movement of the attachment 6, thus meeting the requirements of adapting to various working conditions. In addition, the skid steer loader of the present invention also realizes the quick disassembly, installation and replacement of the standardized interface attachment 6 through various forms of attachment quick change brackets 5, and realizes the quick replacement of the attachment 6 while improving the operation range and freedom degree of the skid steer loader. For the intelligent monitoring system of the present invention, the whole vehicle is monitored in real time through the inclination sensor 71, position sensor, load sensor, pressure sensor 72, temperature sensor and strain gauge 73, so as to realize the intelligent and precise control of the operation of the skid steer loader, and at the same time realize the visualization of various parameters during the operation of the skid steer loader, enabling the user to understand the operation situation of the skid steer loader in real time, realizing preventive maintenance during the operation process, helping the user to reasonably arrange the maintenance plan, adjust the operation intensity, reduce the probability of sudden failure, and reduce the operation and maintenance cost.

[0124] The specific embodiments described above further elaborate on the purpose, technical solutions and beneficial effects of the present invention. It should be understood that the above are only specific embodiments of the present invention and are not used to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A skid steer loader, characterized in that: It includes a loader body, a boom support frame, a boom, an attachment adjustment mechanism, an attachment quick-change frame and attachments; The boom support frame is arranged on both sides of the loader body; The movable arm comprises a main arm and a telescopic arm; The rear end of the main arm is hinged to the boom support frame, the first hydraulic cylinder is connected to the boom support frame and the main arm respectively, and the first hydraulic cylinder drives the main arm to swing relative to the boom support frame; The front end of the main arm is slidably connected to the rear end of the telescopic arm, and the second hydraulic cylinder is respectively connected to the main arm and the telescopic arm, and the second hydraulic cylinder drives the telescopic arm to extend or retract relative to the main arm; The front end of the telescopic arm is hinged to the attachment adjustment mechanism, and the third hydraulic cylinder is connected to the telescopic arm and the attachment adjustment mechanism respectively, and the third hydraulic cylinder is used to change the inclination angle of the attachment adjustment mechanism relative to the telescopic arm; The attachment adjustment mechanism is connected to the attachment through the attachment quick-change frame, and the attachment adjustment mechanism is used to change the position of the attachment relative to the telescopic arm.

2. A skid steer loader according to claim 1, characterized in that: The attachment adjustment mechanism includes a housing, a power output mechanism and a slewing bearing; The front end of the telescopic arm and the third hydraulic cylinder are respectively hinged to the housing; The power output mechanism is arranged in the shell, the power output mechanism is connected to the inner ring of the slewing bearing, the inner ring of the slewing bearing is connected to the attachment quick-change frame, the outer ring of the slewing bearing is connected to the shell, and the power output mechanism drives the inner ring of the slewing bearing to rotate relative to the outer ring of the slewing bearing, thereby driving the attachment to rotate relative to the telescopic arm.

3. A skid steer loader according to claim 2, characterized in that: The power output mechanism includes a servo motor and a planetary reducer; The servo motor is arranged in the housing, and the servo motor power is connected to the sun gear of the planetary reducer; The inner ring of the slewing bearing is connected to the ring gear of the planetary reducer.

4. The skid steer loader according to claim 1, characterized in that: The attachment adjustment mechanism includes a guide seat, a sliding seat and a bidirectional hydraulic cylinder; The front end of the telescopic arm and the third hydraulic cylinder are respectively hinged to the guide seat; The sliding seat is slidably connected to the guide seat, and the attachment quick-change frame is connected to the sliding seat; The cylinder body of the bidirectional hydraulic cylinder is connected to the guide seat, the piston rod of the bidirectional hydraulic cylinder is connected to the sliding seat, and the piston rod of the bidirectional hydraulic cylinder moves in the same direction, thereby driving the attachment to move horizontally relative to the telescopic arm.

5. The skid steer loader according to claim 4, characterized in that: The sliding seat is provided with a roller frame, on which a plurality of rollers are mounted, and the rims of the rollers are in contact with the guide seat; The attachment quick-change frame is provided with an electromagnet, and the sliding seat is provided with a positioning groove matched with the electromagnet. When the electromagnet is energized, a magnetic force is generated and the electromagnet is adsorbed on the positioning groove.

6. The skid steer loader according to claim 1, characterized in that: The attachment quick-change frame includes a frame plate, a locking motor, a transmission shaft, a telescopic assembly, a locking pin and a guide cylinder; The frame plate is connected to the attachment adjustment mechanism, the locking motor is arranged on the frame plate, and the locking motor power is connected to the first bevel gear; A second helical gear meshing with the first helical gear is disposed in the middle of the transmission shaft, a third helical gear is disposed at the end of the transmission shaft, and a fourth helical gear meshing with the third helical gear is disposed on the frame plate; One end of the locking pin is connected to the fourth bevel gear through a telescopic assembly, and the other end of the locking pin is slidably connected to a guide cylinder, which is connected to a locking hole; The locking motor drives the first bevel gear to rotate forward, so that the telescopic assembly drives the locking pin to extend out of the locking hole, and the locking pin abuts against the accessory; the locking motor drives the first bevel gear to rotate reversely, so that the telescopic assembly drives the locking pin to retract into the locking hole, and the locking pin is separated from the accessory.

7. The skid steer loader according to claim 1, characterized in that: The attachment quick-change rack includes a rack plate, a wrench, a telescopic assembly, a locking pin and a guide cylinder; The frame plate is connected to the attachment adjustment mechanism, and the wrench is hinged to the frame plate; One end of the locking pin is connected to the wrench through a telescopic assembly, and the other end of the locking pin is slidably connected to a guide cylinder, which is connected to a locking hole; Pull the wrench forward so that the telescopic assembly drives the locking pin to extend out of the locking hole, and the locking pin abuts against the accessory; pull the wrench backward so that the telescopic assembly drives the locking pin to retract into the locking hole, and the locking pin is separated from the accessory.

8. The skid steer loader according to claim 1, characterized in that: The attachment quick-change frame includes a frame plate, a locking motor, a lead screw shaft, a nut, a locking pin and a guide cylinder; The frame plate is connected to the attachment adjustment mechanism, the locking motor is arranged on the frame plate, the locking motor power is connected to the lead screw shaft, and the nut is sleeved on the lead screw shaft; One end of the locking pin is connected to the nut, and the other end of the locking pin is slidably connected to the guide cylinder, and the guide cylinder is connected to a locking hole; The locking motor drives the screw shaft to rotate in the forward direction, so that the nut drives the locking pin to extend out of the locking hole, and the locking pin abuts against the accessory; the locking motor drives the screw shaft to rotate in the reverse direction, so that the nut drives the locking pin to retract into the locking hole, and the locking pin is separated from the accessory.

9. The skid steer loader according to claim 1, characterized in that: A guide rail is provided on the inner side of the main arm, and a slider is provided on the telescopic arm, and the slider is slidably matched with the guide rail; A dust cover is also arranged between the end of the guide rail and the inner side surface of the main arm.

10. An intelligent monitoring system, characterized in that: The intelligent monitoring system is arranged on the skid steer loader according to any one of claims 1 to 9; The intelligent monitoring system includes a control unit and an inclination sensor, a position sensor, a load sensor, a pressure sensor, a temperature sensor and a strain gauge connected to the control unit by signal; The inclination sensors are respectively arranged on the main arm and the frame plate; the position sensor is arranged on the piston rod of the second hydraulic cylinder; the load sensor is arranged in the guide cylinder; the pressure sensors are respectively arranged on the cylinder bodies of the first hydraulic cylinder, the second hydraulic cylinder and the bidirectional hydraulic cylinder; the temperature sensor is arranged inside the oil tank of the loader body; the strain gauges are respectively arranged on the main arm, the telescopic arm and the slewing bearing.

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