A positioning device for heavy equipment
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CSIC CHONGQING INTELLIGENT EQUIP ENG DESIGN
- Filing Date
- 2025-08-22
- Publication Date
- 2026-06-23
AI Technical Summary
When heavy equipment is aligned and adjusted on a flatbed truck, the sliding upper plate and the sliding bottom plate are separate structures, which results in insufficient accuracy and stability of movement, affecting the alignment effect.
The adjustment device, driven by a limit screw and a hydraulic cylinder, limits the slide plate in the left and right directions through the limit screw, while the hydraulic cylinder drives the slide plate to slide. Combined with the limit structure and ramp plate, the stability and accuracy of the slide plate are ensured.
It improves the accuracy and stability of positioning heavy equipment on flatbed trucks, simplifies the operation process, and enhances the convenience and stability of position adjustment.
Smart Images
Figure CN224392601U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of equipment loading technology, and in particular to a positioning device for heavy equipment. Background Technology
[0002] With the improvement of railway transportation capacity, some heavy equipment is transported by rail for rapid transport. For large-tonnage, oversized and overweight equipment, the longitudinal alignment requirements on flatbed cars are high. Currently, positioners are usually used to adjust the position of such equipment.
[0003] In related technologies, reference can be made to Chinese utility model patent with authorization announcement number CN206885057U, which discloses a lateral displacement device for loading heavy equipment on railways. This device includes a jack located within a jack base and connected to a manual hydraulic pump, as well as a displacement device. Each displacement device includes a hydraulic sliding plate and a manual sliding plate. The hydraulic sliding plate consists of a hydraulic sliding upper plate and a hydraulic sliding bottom plate, while the manual sliding plate consists of a manual sliding upper plate and a manual sliding bottom plate. Roller trolleys are fixed to the lower bottom surfaces of the hydraulic sliding upper plate and the manual sliding upper plate, respectively. The roller trolleys have a chain roller structure. Ramp plates are connected to both sides of the hydraulic sliding bottom plate and the manual sliding bottom plate. A limiting screw is provided at the end of the manual sliding bottom plate away from the hydraulic sliding bottom plate, and an adjusting handwheel is connected to the end of the limiting screw. The jack base is connected to the hydraulic sliding bottom plate.
[0004] In use, the limit screw is adjusted to the predetermined position by adjusting the handwheel, and the hydraulic jack is driven by the manual hydraulic pump to adjust the lateral movement of the vehicle so that the longitudinal center line of the vehicle is aligned with the longitudinal center line of the flatbed. However, the sliding upper plate and the sliding bottom plate are separate structures and there is no limit. Therefore, the accuracy and stability of the sliding upper plate when moving are insufficient, which reduces the effect of centering the heavy equipment on the flatbed. Utility Model Content
[0005] In order to improve the effect of centering and adjusting the position of heavy equipment on flatbed trucks, this utility model provides a positioning device for heavy equipment.
[0006] The positioning device for heavy equipment provided in this application adopts the following technical solution:
[0007] A positioning device for heavy equipment includes a base plate, a slide plate, a limiting screw, and a hydraulic cylinder. The slide plate is slidably mounted on the base plate and is limited in the front-to-back direction by a limiting structure located on the base plate. The limiting screw is threadedly connected to the base plate and is used to limit the slide plate in the left-to-right direction. The extension direction of the limiting screw is parallel to the sliding direction of the slide plate. The hydraulic cylinder is located on the side of the base plate away from the limiting screw and is connected to the slide plate to drive the slide plate to slide in the left-to-right direction. Both sides of the base plate are provided with downwardly inclined ramp plates, the extension direction of which is perpendicular to the sliding direction of the slide plate.
[0008] By adopting the above technical solution, the adjustment device is placed on the flatbed floor near the front of the steering wheels of the heavy equipment. The heavy equipment moves forward and travels over the ramp to the top of the trailer until the steering wheels stop on the trailer. The limit screw is adjusted to the predetermined position, and the trailer is driven to slide on the floor by the hydraulic cylinder, so that the longitudinal centerline of the heavy equipment is aligned with the longitudinal centerline of the flatbed floor. During the sliding of the trailer, the limit structure and the limit screw work together to limit the movement of the trailer, thereby improving the stability of the trailer sliding, improving the accuracy of the centering adjustment, and thus improving the effect of centering adjustment of the heavy equipment on the flatbed.
[0009] Optionally, two mounting plates are fixedly provided on the lower surface of the slide plate. The extension direction of the two mounting plates is parallel to the sliding direction of the slide plate, and each mounting plate has a mounting opening facing the base plate. Multiple mounting shafts with axial directions perpendicular to the extension direction of the mounting plate are fixedly provided in the mounting opening. Each mounting shaft is coaxially rotatably provided with a limiting roller. The limiting roller is in rolling cooperation with the base plate and is limited by a limiting structure.
[0010] By adopting the above technical solution, the slide plate is subjected to force and slides left and right on the base plate through the limiting rollers. The two sets of limiting rollers improve the uniformity of the force on the slide plate, and the limiting structure limits the limiting rollers, thereby improving the stability of the slide plate sliding.
[0011] Optionally, the limiting structure includes two limiting channels, each corresponding to one of the two mounting plates. The extending direction of the limiting channels is consistent with the extending direction of the mounting plates and extends through the bottom plate from left to right. The limiting rollers are rotatably disposed within the limiting channels, and the two end faces of the limiting rollers abut against the inner sidewalls of the limiting channels, respectively.
[0012] By adopting the above technical solution, the two inner walls of the limiting channel abut against the two end faces of the limiting roller, reducing the probability of the limiting roller shifting when rolling, thereby reducing the probability of the slide shifting forward and backward when sliding left and right, thus improving the stability of the slide and improving the effect of centering and adjusting the position of heavy equipment on the flatbed.
[0013] Optionally, an auxiliary plate is also provided on the lower surface of the slide plate. The auxiliary plate is located between the two mounting plates and is parallel to the mounting plates. A support shaft is provided on the auxiliary plate, and an auxiliary roller is coaxially rotatably mounted on the support shaft. The base plate has a limiting groove with an opening facing the auxiliary plate. The limiting groove is located between the limiting screw and the hydraulic cylinder. The auxiliary roller is rotatably mounted in the limiting groove, and the two end faces of the auxiliary roller abut against the inner sidewall of the limiting groove, respectively.
[0014] By adopting the above technical solution, the auxiliary roller and the limiting groove cooperate to provide support for the slide plate and improve the uniformity of the force on the slide plate. Secondly, they assist in limiting the sliding of the slide plate, thereby improving the stability of the slide plate.
[0015] Optionally, a first limiting plate and a second limiting plate are disposed opposite each other on the lower surface of the slide plate. The first limiting plate and the second limiting plate are located at both ends of the auxiliary plate and both extend vertically downward. The first limiting plate is opposite to the limiting screw, and the limiting screw can abut against the first limiting plate when it rotates. The second limiting plate is opposite to the hydraulic cylinder, and the extension end of the hydraulic cylinder can abut against the second limiting plate when it extends.
[0016] By adopting the above technical solution, before use, the trailer is moved to the far right. Then, the heavy equipment is driven onto the trailer, the limit screw is rotated to the predetermined position, and then the hydraulic cylinder is started. The telescopic end of the hydraulic cylinder abuts against the second limit plate. The telescopic end of the hydraulic cylinder continues to extend, thereby pushing the entire trailer to move to the left through the second limit plate until the first limit plate abuts against the limit screw, thereby achieving the limitation of the trailer in the left and right directions and improving the convenience and stability of centering adjustment.
[0017] Optionally, two C-shaped plates are fixedly provided on the base plate. The two C-shaped plates are arranged opposite each other and located on the side of the limiting groove away from the limiting screw. A snap-fit groove is formed between the two C-shaped plates. A snap-fit plate is coaxially fixed on the hydraulic cylinder and is inserted into the snap-fit groove.
[0018] By adopting the above technical solution, the connection between the hydraulic cylinder and the base plate can be completed by simply inserting the snap-fit plate into the snap-fit groove during installation. During disassembly, the snap-fit plate can be simply moved out of the snap-fit groove, which improves the convenience of hydraulic cylinder installation, positioning, disassembly and replacement.
[0019] Optionally, connecting plates are provided on both sides of the base plate. The connecting plates are L-shaped and correspond one-to-one with the ramp plates. The ramp plates have plug-in plates on their side walls near the base plate. The plug-in plates are fastened to the connecting plates. The plug-in plates are provided with positioning screws. The positioning screws are threadedly engaged with the plug-in plates and their ends are pressed against the connecting plates.
[0020] By adopting the above technical solution, during installation, the plug-in plate on the ramp is fastened to the connecting plate, and then the positioning screw is used for positioning. Disassembly can be performed by reversing the operation, thereby improving the convenience of ramp installation, positioning, disassembly and replacement, and thus improving the convenience of adjusting device installation and disassembly. By fastening the connecting plate and the plug-in plate, the contact area at the connection between the ramp and the base plate is increased, thereby improving the stability of the ramp connection.
[0021] Optionally, both ends of the connecting plate are provided with vertically extending positioning plates, and the two positioning plates cooperate to limit the position of the plug-in plate.
[0022] By adopting the above technical solution, the two positioning plates work together to limit the position of the plug-in plate, thereby improving the convenience of plug-in plate installation and positioning.
[0023] Optionally, the limiting screw is equipped with a rotating handwheel.
[0024] Optionally, the hydraulic cylinder is connected to a manual pump.
[0025] In summary, this application includes at least one of the following beneficial technical effects:
[0026] 1. When in use, place the adjustment device on the flatbed floor near the front of the steering wheels of the heavy equipment. The heavy equipment moves forward and crosses the ramp to the top of the trailer until the steering wheels stop on the trailer. Adjust the limit screw to the predetermined position, and then drive the trailer to slide on the floor through the hydraulic cylinder, so that the longitudinal center line of the heavy equipment is aligned with the longitudinal center line of the flatbed floor. During the sliding of the trailer, the limit structure and the limit screw work together to limit the movement of the trailer, thereby improving the stability of the trailer sliding, improving the accuracy of the centering adjustment, and thus improving the effect of centering adjustment of the heavy equipment on the flatbed.
[0027] 2. By having the two inner walls of the limiting channel abut against the two end faces of the limiting roller, the probability of the limiting roller shifting during rolling is reduced, thereby reducing the probability of the slide shifting forward or backward when sliding left or right. This improves the stability of the slide and enhances the effect of centering and adjusting the position of heavy equipment on the flatbed.
[0028] 3. Place the adjustment device on the flatbed floor near the front of the steering wheels. Two adjustment devices form a group, with each group corresponding to two steering wheels. In actual use, either adjustment device can be equipped with a hydraulic cylinder and a manual pump. The adjustment device equipped with the hydraulic cylinder and manual pump is the active one, and the other adjustment device on the same horizontal line is the driven one. When the active trailer moves, the movement of the heavy equipment will push the trailer on the other adjustment device to move synchronously. Only one person is needed to operate a group of adjustment devices, thereby improving the convenience of centering and adjusting the position of heavy equipment on the flatbed. The quick-release structure of the hydraulic cylinder can quickly achieve free switching between the active and driven modes of the adjustment device.
[0029] 4. The connection between the ramp slab and the base plate also adopts a quick-release structure, which improves the convenience of installing and disassembling the adjustment device. Attached Figure Description
[0030] Figure 1 This is a schematic diagram of the overall structure of this application;
[0031] Figure 2 This is a schematic diagram of the limiting structure in this application, in which the slide plate is exploded;
[0032] Figure 3 This is a bottom view of the trailer in this application;
[0033] Figure 4 This is a top view of the base plate and ramp slab in this application;
[0034] Figure 5 This is a structural schematic diagram of the connecting plate in this application, in which the ramp plate is exploded.
[0035] Reference numerals: 1. Base plate; 11. Limiting groove; 12. Fixing plate; 13. C-shaped plate; 131. Snap-fit groove; 14. Connecting plate; 141. Positioning plate; 15. Handrail; 16. Lifting ring; 2. Slide plate; 21. Mounting plate; 22. Mounting port; 221. Mounting shaft; 23. Limiting roller; 24. Auxiliary plate; 241. Auxiliary port; 25. Auxiliary roller; 26. First limiting plate; 27. Second limiting plate; 3. Limiting screw; 31. Rotating handwheel; 4. Hydraulic cylinder; 41. Snap-fit plate; 42. Manual pump; 5. Limiting structure; 51. Limiting channel; 6. Ramp plate; 61. Insertion plate; 62. Positioning screw. Detailed Implementation
[0036] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.
[0037] This application discloses a positioning device for heavy equipment.
[0038] Reference Figure 1 and Figure 2 A positioning device for heavy equipment includes a base plate 1, a sliding plate 2, a limiting screw 3, and a hydraulic cylinder 4. The sliding plate 2 is slidably mounted on the base plate 1 and is limited in the front-to-back direction by a limiting structure 5 located on the base plate 1. The limiting screw 3 is threadedly connected to the base plate 1 and is used to limit the sliding plate 2 in the left-to-right direction. The extension direction of the limiting screw 3 is parallel to the sliding direction of the sliding plate 2. The hydraulic cylinder 4 is located on the side of the base plate 1 away from the limiting screw 3 and is connected to the sliding plate 2 and is used to drive the sliding plate 2 to slide in the left-to-right direction. Both sides of the base plate 1 are provided with downwardly inclined ramp plates 6, and the extension direction of the ramp plates 6 is perpendicular to the sliding direction of the sliding plate 2.
[0039] Reference Figure 1 , Figure 2 and Figure 3 Two mounting plates 21 are fixedly provided on the lower surface of the slide plate 2. The extension direction of the two mounting plates 21 is parallel to the sliding direction of the slide plate 2. Each mounting plate 21 has a mounting opening 22 facing the base plate 1. Multiple mounting shafts 221 with axial directions perpendicular to the extension direction of the mounting plate 21 are fixedly provided in the mounting opening 22. The axial directions of the multiple mounting shafts 221 are parallel to each other. Each mounting shaft 221 is coaxially rotatably provided with a limiting roller 23. The limiting roller 23 rolls with the base plate 1 and is limited by the limiting structure 5.
[0040] Reference Figure 1 , Figure 2 and Figure 4 The limiting structure 5 includes two limiting channels 51, which correspond one-to-one with two mounting plates 21. The extending direction of the limiting channel 51 is consistent with the extending direction of the mounting plate 21 and is set to pass through the bottom plate 1 from left to right. The limiting rollers 23 located in the same mounting opening 22 are all rolled in the corresponding limiting channel 51. The two end faces of the limiting rollers 23 abut against the inner sidewall of the limiting channel 51, thereby limiting the two end faces of the limiting rollers 23, so that the slide plate 2 can only slide along the extending direction of the limiting channel 51, reducing the probability of its deviation.
[0041] Reference Figure 1 , Figure 2 and Figure 3 An auxiliary plate 24 is also provided on the lower surface of the slide plate 2. The auxiliary plate 24 is located between the two mounting plates 21 and is parallel to the mounting plates 21. The auxiliary plate 24 has an auxiliary opening 241 facing the bottom plate 1. The auxiliary opening 241 is located between the two mounting openings 22. The extension direction of the auxiliary opening 241 is parallel to the extension direction of the two mounting openings 22. Multiple support shafts with axial directions parallel to the axial direction of the mounting shaft 221 are fixed inside the auxiliary opening 241. An auxiliary roller 25 is coaxially rotatably provided on each support shaft. The axial direction of the auxiliary roller 25 is parallel to the axial direction of the limiting roller 23.
[0042] Reference Figure 1 , Figure 3 and Figure 4 The base plate 1 has a limiting groove 11 with an opening facing the auxiliary plate 24. The limiting groove 11 is located between the limiting screw 3 and the hydraulic cylinder 4, and the limiting groove 11 is located between two limiting channels 51. The extension direction of the limiting groove 11 is parallel to the extension direction of the limiting channel 51, and the length of the limiting groove 11 is less than the length of the limiting channel 51. Multiple auxiliary rollers 25 are installed in the limiting groove 11, and the two end faces of the auxiliary rollers 25 abut against the inner sidewall of the limiting groove 11.
[0043] Reference Figure 1 , Figure 2 and Figure 4 A fixed plate 12 extending upward is fixedly provided on the left side of the upper surface of the base plate 1. The height of the fixed plate 12 is less than the distance between the sliding plate 2 and the base plate 1. The limiting screw 3 is threadedly connected to the fixed plate 12. A rotating handwheel 31 for easy leverage is coaxially fixed at the end of the limiting screw 3 away from the fixed plate 12. Two C-shaped plates 13 are fixedly provided on the right side of the upper surface of the base plate 1. The two C-shaped plates 13 are arranged opposite each other and located on the side of the limiting groove 11 away from the limiting screw 3. A snap-fit groove 131 is formed between the two C-shaped plates 13. A snap-fit plate 41 is coaxially fixed on the hydraulic cylinder 4. The snap-fit plate 41 is inserted into the snap-fit groove 131. The hydraulic cylinder 4 is connected to a manual pump 42 for easy manual operation.
[0044] Reference Figure 2 , Figure 3 and Figure 4 A first limiting plate 26 and a second limiting plate 27 are fixedly mounted on the lower surface of the slide plate 2. The first limiting plate 26 and the second limiting plate 27 are located at both ends of the auxiliary plate 24 and both extend vertically downward. The first limiting plate 26 is opposite to the limiting screw 3 and the fixed plate 12. When the limiting screw 3 rotates, it can abut against the first limiting plate 26. The second limiting plate 27 is opposite to the hydraulic cylinder 4. When the extension end of the hydraulic cylinder 4 extends, it can abut against the second limiting plate 27.
[0045] Reference Figure 2 , Figure 3 and Figure 4 In this embodiment, the telescopic end of the hydraulic cylinder 4 is detachably connected to the second limiting plate 27 via connecting bolts (not shown in the figure). The telescopic end of the hydraulic cylinder 4 can drive the slide plate 2 to slide when it extends and retracts. In other feasible embodiments, the telescopic end of the hydraulic cylinder 4 does not abut against the second limiting plate 27 when it is not extended. When the telescopic end of the hydraulic cylinder 4 extends, the telescopic end of the hydraulic cylinder 4 abuts against the middle of the second limiting plate 27 and pushes the slide plate 2 to slide.
[0046] Reference Figure 2 , Figure 4 and Figure 5The base plate 1 has connecting plates 14 on both the front and rear sides. The connecting plates 14 are L-shaped and correspond one-to-one with the ramp plates 6. The connection method of the connecting plates 14 on both sides is the same as that of the ramp plates 6. The following description only focuses on one side. The base plate 1 has two connecting plates 14 spaced apart on one side. The horizontally extended part of the connecting plate 14 is fixed on the upper surface of the base plate 1, and the outer surface of the vertically extended part of the connecting plate 14 is flush with the side wall of the base plate 1. The two connecting plates 14 on one side are located on the same horizontal line and have the same height.
[0047] Reference Figure 2 , Figure 4 and Figure 5 The ramp plate 6 has a plug-in plate 61 on the side wall near the bottom plate 1, which corresponds to the connecting plate 14. The plug-in plate 61 is fastened to the connecting plate 14. The plug-in plate 61 is provided with a positioning screw 62. The positioning screw 62 is threaded with the plug-in plate 61 and its end is pressed against the connecting plate for positioning.
[0048] Reference Figure 2 , Figure 4 and Figure 5 Each connecting plate 14 has a vertically extending positioning plate 141 at both ends, and the two positioning plates 141 cooperate to limit the position of the plug-in plate 61.
[0049] Reference Figure 1 The highest point of the ramp 6 is at the same height as the upper surface of the trailer 2, so that the wheels of heavy equipment can drive from the ramp to the upper surface of the trailer 2.
[0050] Reference Figure 1 and Figure 2 The bottom plate 1, the drag plate 2 and the ramp plate 6 are all equipped with handrails 15 for easy leverage on the side walls, and the four corners of the bottom plate 1 are also equipped with lifting rings 16 for easy hoisting and transportation.
[0051] The method of using the adjustment device provided in this application is as follows: First, install the adjustment device, and select the appropriate number of adjustment devices according to the specifications of the heavy equipment. Use 2 adjustment devices for 4×2, 4×4 and 6×4 type vehicles, and use 4 adjustment devices for 8×8 type vehicles.
[0052] First, align the front wheels of the heavy equipment vehicle and drive it towards the predetermined marked position. Stop when you are 3 meters away from the predetermined marked position. This 3 meters can be adjusted according to the actual operation during use. When you stop, the front wheels are in a straight position.
[0053] The adjustment device is placed on the flatbed floor near the front of the steering wheels. Two adjustment devices form a group, with each group corresponding to two steering wheels. In actual use, either adjustment device can be equipped with a hydraulic cylinder 4 and a manual pump 42. The adjustment device equipped with the hydraulic cylinder 4 and the manual pump 42 is the active one, and the other adjustment device on the same horizontal line is the passive one. When the active trailer 2 moves, the movement of the heavy equipment will push the trailer 2 on the other adjustment device to move synchronously. Only one person is needed to operate a group of adjustment devices, thereby improving the convenience of centering and adjusting the position of the heavy equipment on the flatbed. The quick-release structure of the hydraulic cylinder 4 can quickly achieve free switching between the active and passive modes of the adjustment device.
[0054] At this time, the sliding direction of the trailer 2 is along the left and right direction of the flatbed. The trailer 2 is pushed to the rightmost position by the handrail 15 or the hydraulic cylinder 4 retracts. It should be noted that the adjustment device needs to be pushed to the rightmost position every time it is used.
[0055] The heavy equipment vehicle moves forward, and the steering wheels drive over the ramp 6 onto the upper surface of the trailer 2, stopping when the steering wheels are on the upper surface of the trailer 2.
[0056] The operator adjusts the position of the front end of the limit screw 3 by turning the handwheel 31, and then uses the manual pump 42 to drive the hydraulic cylinder 4 to adjust the lateral movement of the heavy equipment vehicle. It should be noted that when the active-driven adjustment device is selected, the other adjustment device on the same horizontal line is the driven one. When the active trailer 2 moves, the movement of the heavy equipment will push the trailer 2 on the other adjustment device to move synchronously. Therefore, one set of adjustment devices only needs to be operated by one person. When two sets are used, two operators are required to operate them. The position of the heavy equipment vehicle is adjusted by driving the trailer 2 to slide through the hydraulic cylinder 4, so that the longitudinal center line of the vehicle is aligned with the longitudinal center line of the flatbed.
[0057] For example: In a four-wheeled rear-wheel drive vehicle, the front wheels are steering wheels. After the longitudinal center line of the front wheels is aligned with the longitudinal center line of the flatbed (at this time the vehicle is at an angle), the front wheels are straightened and the vehicle continues to move forward. The longitudinal center line of the entire vehicle then coincides with the longitudinal center line of the flatbed.
[0058] After the position adjustment is completed, the heavy equipment vehicle can be driven. Once the steering wheels are disengaged from the adjustment device, the adjustment device can be removed.
[0059] The working principle of this application embodiment:
[0060] During the sliding process of the slide plate 2, the two inner walls of the limiting channel 51 abut against the two end faces of the limiting roller 23, reducing the probability of the limiting roller 23 shifting when rolling, thereby reducing the probability of the slide plate 2 shifting forward or backward when sliding left or right, thus improving the stability of the slide plate 2, improving the accuracy of the centering adjustment, and thus improving the effect of centering adjustment of heavy equipment on the flatbed. The connection between the hydraulic cylinder 4 and the ramp plate 6 and the base plate 1 adopts a quick-release structure, thereby improving the convenience of installation and disassembly of the adjustment device. During use, the active adjustment device and the passive adjustment device can be selected according to the actual use situation, thereby improving the convenience of centering adjustment operation of heavy equipment on the flatbed.
[0061] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. A positioning device for heavy equipment, characterized by: The system includes a base plate (1), a slide plate (2), a limiting screw (3), and a hydraulic cylinder (4). The slide plate (2) is slidably mounted on the base plate (1) and is limited in the front-to-back direction by a limiting structure (5) located on the base plate (1). The limiting screw (3) is threadedly connected to the base plate (1) and is used to limit the slide plate (2) in the left-to-right direction. The extension direction of the limiting screw (3) is parallel to the sliding direction of the slide plate (2). The hydraulic cylinder (4) is located on the side of the base plate (1) away from the limiting screw (3) and is connected to the slide plate (2) and is used to drive the slide plate (2) to slide in the left-to-right direction. Both sides of the base plate (1) are provided with downwardly inclined ramp plates (6). The extension direction of the ramp plates (6) is perpendicular to the sliding direction of the slide plate (2). Two mounting plates (21) are fixedly provided on the lower surface of the slide plate (2). The extension direction of the two mounting plates (21) is parallel to the sliding direction of the slide plate (2). Each mounting plate (21) has a mounting opening (22) facing the base plate (1). Multiple mounting shafts (221) with axial directions perpendicular to the extension direction of the mounting plate (21) are fixedly provided in the mounting opening (22). Each mounting shaft (221) is coaxially provided with a limiting roller (23). The limiting roller (23) rolls with the base plate (1) and is limited by the limiting structure (5).
2. A positioning device for heavy equipment according to claim 1, characterized in that: The limiting structure (5) includes two limiting channels (51), which correspond one-to-one with two mounting plates (21). The extending direction of the limiting channel (51) is consistent with the extending direction of the mounting plate (21) and is set to pass through the bottom plate (1) from left to right. The limiting roller (23) is rolled in the limiting channel (51), and the two end faces of the limiting roller (23) abut against the inner sidewall of the limiting channel (51) respectively.
3. A positioning device for heavy equipment according to claim 1, characterized in that: An auxiliary plate (24) is also provided on the lower surface of the slide plate (2). The auxiliary plate (24) is located between two mounting plates (21) and is parallel to the mounting plates (21). A support shaft is provided on the auxiliary plate (24). An auxiliary roller (25) is coaxially rotatably mounted on the support shaft. A limiting groove (11) with an opening facing the auxiliary plate (24) is provided on the bottom plate (1). The limiting groove (11) is located between the limiting screw (3) and the hydraulic cylinder (4). The auxiliary roller (25) is rolled in the limiting groove (11). The two end faces of the auxiliary roller (25) abut against the inner sidewall of the limiting groove (11).
4. A positioning device for heavy equipment according to claim 3, characterized in that: The lower surface of the slide plate (2) is provided with a first limiting plate (26) and a second limiting plate (27) opposite to each other. The first limiting plate (26) and the second limiting plate (27) are located at both ends of the auxiliary plate (24) and both extend vertically downward. The first limiting plate (26) is opposite to the limiting screw (3). When the limiting screw (3) rotates, it can abut against the first limiting plate (26). The second limiting plate (27) is opposite to the hydraulic cylinder (4). When the extension end of the hydraulic cylinder (4) extends, it can abut against the second limiting plate (27).
5. A positioning device for heavy equipment according to claim 4, characterized in that: Two C-shaped plates (13) are fixed on the base plate (1). The two C-shaped plates (13) are arranged opposite each other and located on the side of the limiting groove (11) away from the limiting screw (3). A snap-fit groove (131) is formed between the two C-shaped plates (13). A snap-fit plate (41) is coaxially fixed on the hydraulic cylinder (4). The snap-fit plate (41) is inserted into the snap-fit groove (131).
6. A positioning device for heavy equipment according to claim 1, wherein: The base plate (1) is provided with connecting plates (14) on both sides. The connecting plates (14) are L-shaped and correspond one-to-one with the ramp plate (6). The ramp plate (6) has a plug plate (61) on the side wall near the base plate (1). The plug plate (61) is fastened to the connecting plate (14). The plug plate (61) is provided with a positioning screw (62). The positioning screw (62) is threadedly engaged with the plug plate (61) and its end is pressed against the connecting plate (14).
7. A positioning device for heavy equipment according to claim 6, characterized in that: The connecting plate (14) has vertically extending positioning plates (141) at both ends, and the two positioning plates (141) cooperate to limit the position of the plug-in plate (61).
8. A positioning device for heavy equipment according to claim 1, wherein: The limiting screw (3) is equipped with a rotating handwheel (31).
9. A positioning device for heavy equipment according to claim 1, wherein: The hydraulic cylinder (4) is connected to a manual pump (42).