Universal brake release false car

Abstract

The utility model relates to rail vehicle overhauls auxiliary equipment technical field, especially in a kind of general type brake relief dummy car.The dummy car includes car underframe, car underframe is installed with crossbeam, the both ends of crossbeam are adjustably installed with side support device, side support device is provided with height-adjustable side support assembly, the middle part of crossbeam is adjustably installed with middle support device, the four corner positions of car underframe are respectively installed with wheel device, the both sides of car underframe are respectively installed with wheel brake relief device, wheel brake relief device includes electric brake relief assembly and manual adjusting assembly, electric brake relief assembly is installed on manual adjusting assembly, manual adjusting assembly is installed on car underframe, electric brake relief assembly is electrically connected with electric cabinet, electric cabinet is installed on crossbeam.The utility model can realize the generalization, light weight, modularization and brake relief function of dummy car, its structure is simple, and adjustment operation is convenient, and it is light in operation, and cost can be saved.

Description

Technical Field

[0001] This utility model relates to the technical field of auxiliary equipment for rail vehicle maintenance, and in particular to a general-purpose brake relief dummy trolley. Background Technology

[0002] Process dummy trolleys are now very common. They can replace bogies to complete vehicle maintenance and transportation tasks, and have become indispensable equipment for various OEMs and depots. However, at present, the structures of process dummy trolleys vary among OEMs and depots. One type is a process transportation dummy trolley converted from a bogie, and the other is the existing process dummy trolley on the market. Bogie-converted dummy trolleys are bulky, inconvenient to transport, and only applicable to one type of vehicle, making them non-universal. On the other hand, the existing dummy trolleys on the market are expensive, have poor versatility, complex designs, lack brake release functions, and require the installation of brake shoes when braking. Users need to purchase multiple types of dummy trolleys, resulting in high procurement costs and wasted storage space when not in use.

[0003] Chinese patent application number 202010944516.7 discloses a general-purpose dummy trolley, comprising: an H-shaped frame consisting of two side beams and a crossbeam; two small crossbeams connecting the ends of the left and right side beams respectively; two sets of wheel sets connected to the bottom of the frame via axle boxes; two replaceable rubber stacks; a replaceable crossbeam core plate; two rubber stack fixing seats; four sets of stoppers; and four anti-collision buffer rubber blocks at the ends of the side beams. This dummy trolley has advantages such as simple and practical structure, convenient operation, low cost, and ease of promotion and popularization. However, its parking function relies on stoppers, requiring manual placement and retraction of the stoppers, which is relatively cumbersome and carries the risk of loss. Furthermore, the height adjustment via replaceable rubber stacks to accommodate different vehicle models is relatively complex, requiring the prefabrication of various heights of replaceable components, increasing operational complexity and time costs, and limiting its flexibility and versatility in practical applications. Utility Model Content

[0004] The purpose of this utility model is to solve the technical problems of existing dummy trolleys with different forms for different vehicles and loads, which lack versatility, have redundant structures, and require manual operation for the brake release function, which is relatively cumbersome and carries the risk of loss. This utility model provides a universal brake release dummy trolley that can achieve universality, lightweighting, modularization, and brake release function. It has a simple structure, is easy to adjust and operate, runs smoothly, saves manufacturing costs, and is suitable for widespread use.

[0005] The technical solution adopted by this utility model to achieve the above-mentioned objectives is as follows: a universal brake-relieving dummy trolley, including a chassis, a crossbeam mounted on the chassis, side support devices adjustable at both ends of the crossbeam, side support devices having height-adjustable side support components, a central support device adjustable at the middle of the crossbeam, wheel devices mounted at the four corners of the chassis, wheel brake-relieving devices mounted on both sides of the chassis, the wheel brake-relieving device including an electric brake-relieving component and a manual adjustment component, the electric brake-relieving component mounted on the manual adjustment component, the manual adjustment component mounted on the chassis, the electric brake-relieving component electrically connected to an electrical control box, and the electrical control box mounted on the crossbeam.

[0006] Furthermore, the electric brake release assembly includes a connecting seat, an electric push rod mounting seat, an electric push rod guide seat, an electric push rod, and a brake block. The connecting seat is mounted on the manual adjustment assembly. The electric push rod mounting seat and the electric push rod guide seat are respectively mounted on the inner side of the connecting seat. An electric push rod support rib is installed between the electric push rod mounting seat and the connecting seat. The electric push rod is mounted on the electric push rod mounting seat. One end of the electric push rod with a telescopic rod passes through the electric push rod guide seat. A brake block is installed at the telescopic rod end of the electric push rod. The electric push rod is electrically connected to the electrical control box.

[0007] Furthermore, the manual adjustment assembly includes a mounting plate, a shaft guide seat, a threaded shaft, a threaded block, a guide slider, and linear guide rails. The mounting plate is mounted on the vehicle chassis. The shaft guide seat is mounted on one inner end of the mounting plate. The threaded shaft is rotatably mounted on the shaft guide seat. A manual wheel is mounted on one end of the threaded shaft, with the manual wheel extending outside the vehicle chassis. Two shaft shoulder retaining rings are fitted on the threaded shaft to limit its horizontal position. The two shaft shoulder retaining rings are located on both sides of the shaft guide seat. One shaft shoulder retaining ring closer to the manual wheel is fixedly connected to the threaded shaft, while the other shaft shoulder retaining ring farther from the manual wheel is movably connected to the threaded shaft and its position is limited by a pin inserted into the threaded shaft. A threaded block is threadedly connected to the threaded shaft. The two ends of the threaded block are slidably connected to two linear guide rails, which are installed parallel to each other on the inner side of the mounting plate. A guide slider is also slidably connected to the two linear guide rails. The middle part of the guide slider is slidably fitted onto the threaded shaft. The threaded block and the guide slider are threadedly connected to a connecting seat.

[0008] Furthermore, the side support device includes a side support base, with first elongated holes at the four corners of the side support base. The side support base is adjustablely mounted on the crossbeam via the first elongated holes and bolts. Two sets of side support assemblies are symmetrically mounted on the upper end of the side support base. Each side support assembly includes a support pad, a support seat plate, a threaded support cylinder, a side support platform, and a fastening nut. The support seat plate is provided on the upper end of the support pad. The support pad and the support seat plate are mounted on the side support base by bolts. The threaded support cylinder is mounted on the support seat plate. The side support platform is threadedly connected to the threaded support cylinder. The fastening nut is threadedly connected to the side support platform. A first support column is provided on the upper end of the side support platform.

[0009] Furthermore, the side support assembly also includes a nylon pad, which is sleeved on the first support column. The upper surface of the nylon pad is flat, and the upper surface of the nylon pad is parallel to or protrudes from the upper surface of the first support column.

[0010] Furthermore, the central support device includes a central support base, a central support cylinder, and a central support platform. The central support base has second elongated holes at its four corners. The central support base is adjustablely mounted on the crossbeam through the second elongated holes and bolts. The central support cylinder is installed at the upper end of the central support base. Multiple reinforcing plates are installed at intervals between the central support cylinder and the central support base. The central support platform is installed at the upper end of the central support cylinder. A second support column is provided in the middle of the central support platform. A central support pad is fitted on the second support column. The central support pad is installed on the central support platform by bolts.

[0011] Furthermore, the wheel assembly includes a wheel axle, a wheel mounting plate, a bearing, a bearing cover, and a wheel. The wheel axle is mounted on the chassis via the wheel mounting plate. The bearing and a bearing cover for positioning the bearing are mounted on the wheel axle. The wheel is mounted on the bearing. The bearing cover is located on the outside of the wheel. Two retaining rings are also mounted on the wheel axle. The two retaining rings are respectively set in grooves opened on the wheel axle, with one retaining ring located on the inside of the wheel and the other retaining ring located on the outside of the bearing cover.

[0012] Furthermore, the crossbeam includes a lower base plate, an upper cover plate, side plates, a bottom baffle plate, and an end plate. Two side plates are installed parallel to each other between the lower base plate and the upper cover plate. The lower base plate has trapezoidal platforms protruding from the side plates on both sides of its middle portion. The upper cover plate has protruding side plates on both sides. The portion of the upper cover plate protruding from the side plates is provided with multiple first adjustment grooves at intervals. The lower base plate has upwardly inclined bottom baffles installed at both ends, and the upper ends of the bottom baffles are fixed to the side plates on both sides. End plates are installed at the ends of the two side plates, and the end plates protrude from the side plates on both sides. The crossbeam also includes two reinforcing cover plates, multiple reinforcing ribs, and multiple side ribs. The two reinforcing cover plates are located at both ends of the crossbeam and are positioned between the side plates and the upper cover plate. The reinforcing cover plates have second adjustment grooves, which are opposite to the first adjustment grooves. The multiple reinforcing ribs are spaced apart between the two side plates. The multiple side ribs are positioned between the trapezoidal platforms, the side plates, and the upper cover plate, and are distributed in pairs on both sides of the crossbeam.

[0013] Furthermore, the chassis includes two side frames, with two support beams and two small crossbeams installed between the two side frames. The two support beams are located between the two small crossbeams, and a small longitudinal beam is installed between the two support beams. The wheel assembly is installed on the side frames, and two wheel brake release devices are respectively installed on the two side frames and are diagonally distributed.

[0014] Furthermore, anti-collision and shock-absorbing pads are installed at both ends of the vehicle chassis.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] (1) The utility model of the general-purpose brake release dummy trolley has a brake release device. Through the cooperation of electric push rod and electric control box, the electric control brake release function is realized, making the brake release operation more convenient and automated. At the same time, it has a manual control function. When the power is off, it can be manually controlled by manual turn wheel, threaded shaft, threaded block, guide slider and linear guide rail to realize the braking and release of the equipment. Thus, both electric control and manual control can meet the braking and release functions. The brake release devices of the two wheels are diagonally distributed to prevent the chassis from shifting or twisting, ensuring the overall stability of the dummy trolley. The overall design structure is simple, meets the requirements of lightweight design, is convenient to transport, meets the needs of use, has low cost and is suitable for promotion and use.

[0017] (2) The universal brake relief dummy trolley of this utility model has a crossbeam that mainly supports the side support device and the middle support device. The side support device and the middle support device mainly support the vehicle. The two sets of side support devices and the middle support device are installed on the crossbeam by various fasteners. The positions of the two sets of side support devices and the middle support device can be adjusted by the elongated hole. The adjustment is convenient and can reduce the manufacturing cost of the equipment. Through the cooperation of the threaded support cylinder and the side support platform, the height of the side support device can be quickly adjusted, thereby meeting the needs of supporting and transporting different types of vehicles, enhancing the versatility of the tooling, making it easy to apply to various occasions, and saving procurement costs.

[0018] (3) The universal brake relief dummy trolley of this utility model is also provided with a nylon pad on the side support component. The nylon pad can be added as needed. If the support part of some vehicles is flat, it needs to be added; if the support part of some vehicles is a hole, it does not need to be added, thus making the dummy trolley more versatile. Attached Figure Description

[0019] Figure 1 The present invention relates to a general-purpose brake-relieving dummy trolley structure. Figure 1 .

[0020] Figure 2 The present invention relates to a general-purpose brake-relieving dummy trolley structure. Figure 2 .

[0021] Figure 3 This is an exploded view of the structure of the general-purpose brake-relieving dummy trolley crossbeam of this utility model.

[0022] Figure 4 This is a structural diagram of the general-purpose brake relief dummy trolley side support device of this utility model.

[0023] Figure 5 This is a structural diagram of the general-purpose brake relief dummy trolley support device of this utility model.

[0024] Figure 6 This is an exploded view of the general-purpose brake relief dummy trolley wheel device of this utility model.

[0025] Figure 7 This is a structural diagram of the universal brake release dummy trolley wheel brake release device of this utility model.

[0026] In the diagram: 1. Underframe, 11. Side frame, 12. Support beam, 13. Small crossbeam, 14. Small longitudinal beam, 2. Anti-collision and shock-absorbing pad, 3. Crossbeam, 31. Lower base plate, 311. Trapezoidal platform, 32. Upper cover plate, 321. First adjustment groove, 33. Side plate, 34. Bottom baffle, 35. End plate, 36. Reinforcing cover plate, 361. Second adjustment groove, 37. Reinforcing rib plate, 38. Side rib plate, 4. Side support device, 41. Side support base, 411. First elongated hole, 42. Side support assembly, 421. Support pad, 422. Support seat plate, 423. Threaded support cylinder, 424. Side support platform, 4241. First support column, 425. Fastening nut, 426. Nylon pad, 5. Central support device, 51. Central support base, 511. Second elongated hole 52. Central support cylinder, 53. Central support platform, 531. Second support column, 54. Reinforcing plate, 55. Central support pad, 6. Wheel assembly, 61. Wheel axle, 62. Wheel mounting plate, 63. Bearing, 64. Bearing cover, 65. Wheel, 66. Snap ring, 7. Wheel brake release device, 71. Manual adjustment assembly, 711. Mounting plate, 712. Shaft guide seat, 713. Threaded shaft, 714. Threaded block, 715. Guide slider, 716. Linear guide rail, 717. Manual rotating wheel, 718. Shaft shoulder retaining ring, 72. Electric brake release assembly, 721. Connecting seat, 722. Electric push rod mounting seat, 723. Electric push rod guide seat, 724. Electric push rod, 725. Brake block, 726. Electric push rod support rib, 8. Electrical control box. Detailed Implementation

[0027] The present invention will now be described in detail with reference to the accompanying drawings and embodiments, but the present invention is not limited to the specific embodiments.

[0028] like Figure 1-2 The diagram shows a general-purpose brake relief dummy trolley, including a chassis 1. The chassis includes two side frames 11, with two support beams 12 and two small crossbeams 13 installed between the two side frames 11. The two support beams 12 are located between the two small crossbeams 13, and a small longitudinal beam 14 is installed between the two support beams 12. Anti-collision and shock-absorbing pads 2 are installed at both ends of the side frames 11. The structure of the chassis 1 can ensure that the overall structure of the dummy trolley is solid and reliable, and that it runs smoothly.

[0029] A crossbeam 3 is mounted on the chassis 1, such as Figure 3As shown, the crossbeam 3 includes a lower base plate 31, an upper cover plate 32, side plates 33, a bottom baffle 34, and an end plate 35. The lower base plate 31 is installed on the side frame 11, the support beam 12, and the small longitudinal beam 13. Two side plates 33 are installed in parallel between the lower base plate 31 and the upper cover plate 32. The lower base plate 31 has trapezoidal platforms 311 protruding from the side plates 33 on both sides of its middle portion. The upper cover plate 32 has side plates 33 protruding from both sides. The portion of the upper cover plate 32 protruding from the side plates 33 is provided with multiple first adjustment grooves 321 at intervals. The lower base plate 31 has upwardly inclined bottom baffles 34 installed at both ends. The upper ends of the bottom baffles 34 are fixed to the side plates 33 on both sides. The ends of the two side plates 33 are respectively installed with end plates 35, and the ends of the end plates 35 protrude from the side plates 33 on both sides.

[0030] Preferably, the crossbeam 3 further includes two reinforcing cover plates 36, multiple reinforcing ribs 37, and multiple side ribs 38. The two reinforcing cover plates 36 are located at both ends of the crossbeam 3 and are positioned between the side plate 33 and the upper cover plate 32. The reinforcing cover plates 36 have a second adjustment groove 361, which is opposite to the first adjustment groove 321. The multiple reinforcing ribs 37 are spaced apart between the two side plates 33. The multiple side ribs 38 are respectively positioned between the trapezoidal platform 311, the side plate 33, and the upper cover plate 32, and are distributed in pairs on both sides of the crossbeam 3. The crossbeam 3 is assembled and installed on the chassis 1. The lower bottom plate 31, the upper cover plate 32, the side plate 33, the bottom baffle 34, and the end plate 35 mainly serve to fix the structure and ensure strength. After finite element analysis, various ribs are used to form a solid and stable support structure.

[0031] The two ends of the crossbeam 3 are adjustablely equipped with side support devices 4, such as... Figure 4As shown, the side support device 4 includes a side support base 41. First elongated holes 411 are provided at the four corners of the side support base 41. The side support base 41 is adjustablely mounted on the first adjustment groove 321 and the second adjustment groove 361 on the crossbeam 3 via the first elongated holes 411 and bolts, thereby adjusting the horizontal position of the side support device 4. Two sets of height-adjustable side support assemblies 42 are symmetrically installed on the upper end of the side support base 41. The side support assembly 42 includes a support pad 421 and a support... The system comprises a base plate 422, a threaded support cylinder 423, a side support platform 424, and a fastening nut 425. The support base plate 422 is mounted on the upper end of the support pad 421. The support pad 421 and the support base plate 422 are bolted to the side support base 41. The threaded support cylinder 423 is mounted on the support base plate 422, and the side support platform 424 is threadedly connected to the threaded support cylinder 423. The fastening nut 425 is threadedly connected to the side support platform 424. A first support column 4241 is located at the upper end of the side support platform 424. The combination of the threaded support cylinder and the side support platform allows for height adjustment to meet equipment usage requirements. After height adjustment, the fastening nut is used to tighten the system, ensuring it will not fall off and making the structure more robust and stable.

[0032] Preferably, the side support assembly 42 further includes a nylon pad 426, which is sleeved on the first support column 4241. The upper surface of the nylon pad 426 is flat, and the upper surface of the nylon pad 426 is parallel to or protrudes from the upper surface of the first support column 4241. The nylon pad can be added or not depending on the vehicle model; if the support part is flat, it needs to be added; if the support part is a hole, it does not need to be added.

[0033] A central support device 5 is adjustablely installed in the middle of the crossbeam 3, such as... Figure 5 As shown, the central support device 5 includes a central support base 51, a central support cylinder 52, and a central support platform 53. The central support base 51 has second elongated holes 511 at its four corners. The central support base 51 is adjustablely mounted on the first adjustment groove 321 on the crossbeam 3 via the second elongated holes 511 and bolts, thereby adjusting the horizontal position of the central support device 5. The central support cylinder 52 is installed at the upper end of the central support base 51. Multiple reinforcing plates 54 are installed at intervals between the central support cylinder 52 and the central support base 51. The central support platform 53 is installed at the upper end of the central support cylinder 52. A second support column 531 is provided in the center of the central support platform 53. A central support pad 55 is fitted onto the second support column 531 and is bolted to the central support platform 53. Depending on the vehicle model, some models have a central support section with only auxiliary supports on both sides. Therefore, the central support device improves the versatility of the dummy trolley.

[0034] Wheel assemblies 6 are installed at the front and rear ends of the two side frames 11, respectively. Figure 6 As shown, the wheel assembly includes a wheel axle 61, a wheel mounting plate 62, a bearing 63, a bearing cover 64, and a wheel 65. The wheel axle 61 is mounted on the side frame 11 via the wheel mounting plate 62. The wheel mounting plate 62 mainly connects the wheel assembly 6 to the chassis 1, forming a vehicle body support structure. The bearing 63 and the bearing cover 64 for positioning the bearing 63 are mounted on the wheel axle 61. The wheel 65 is mounted on the bearing 63. Specifically, the wheel axle 61, the bearing 63, and the wheel 65 are interference-fitted. The bearing cover 64 is located on the outside of the wheel 65 and mainly serves to position the bearing 63. Two retaining springs 66 are also mounted on the wheel axle 61. The two retaining springs 66 are respectively set in the grooves opened on the wheel axle 61, with one retaining spring 66 located on the inside of the wheel 65 and the other retaining spring 66 located on the outside of the bearing cover 64. The retaining springs 66 mainly serve to position the two ends of the axle. The wheel assembly provides the entire equipment with the ability to move. The bearings installed in the wheels ensure smooth and stable operation and are easy to use.

[0035] The crossbeam primarily supports the side and central support devices, which in turn support the vehicle. The two sets of side and central support devices are mounted to the crossbeam using various fasteners. Their positions can be adjusted via elongated holes, making adjustment convenient and reducing equipment manufacturing costs. Through the cooperation of threaded support cylinders and side support platforms, the height of the side support devices can be quickly adjusted to accommodate the support and transport of different types of vehicles, enhancing the tooling's versatility and applicability to various situations, thus saving on procurement costs.

[0036] Two wheel brake release devices 7 are also installed on the two side frames 11 respectively, and the two wheel brake release devices 7 are arranged diagonally to prevent the chassis 1 from shifting or twisting, thus ensuring the overall stability of the dummy trolley.

[0037] like Figure 7 As shown, the wheel brake release device 7 includes a manual adjustment component 71 and an electric brake release component 72. The manual adjustment component 71 is mounted on the side frame 11, and the electric brake release component 72 is mounted on the manual adjustment component 71. The electric brake release component 72 is electrically connected to the electric control box 8. The electric control box 8 is mounted on the lower part of one end of the crossbeam 3. The electric control box 8 contains a rechargeable battery and can realize the electric brake release function.

[0038] Preferably, the manual adjustment assembly 71 includes a mounting plate 711, a shaft guide seat 712, a threaded shaft 713, a threaded block 714, a guide slider 715, and a linear guide rail 716. The mounting plate 711 is mounted on the side frame 11. The shaft guide seat 712 is mounted on one inner end of the mounting plate 711. The threaded shaft 713 is rotatably mounted on the shaft guide seat 712. A manual wheel 717 is mounted on one end of the threaded shaft 713, with a portion of the manual wheel 717 extending outside the side frame 11. Two shaft shoulder retaining rings 718 are fitted on the threaded shaft 713 to limit its horizontal position. The two shaft shoulder retaining rings 718 are located on both sides of the shaft guide seat 712, with one shaft shoulder retaining ring 718 closer to the manual wheel 717 fixedly connected to the threaded shaft 713, and the other one further away... The rotating shaft shoulder retaining ring 718 of the manual rotating wheel 717 is movably connected to the threaded rotating shaft 713, and its position is limited by a pin (not shown in the figure) inserted on the threaded rotating shaft 713. The two rotating shaft shoulder retaining rings 718 adopt a fixed and movable connection method. At the same time, with the setting of the pin, it is convenient for the threaded rotating shaft 713 to pass through the shaft guide seat 712, while also limiting the threaded rotating shaft 713. Its structure is simple and ingeniously designed. The threaded rotating shaft 713 is threadedly connected to the threaded block 714. The two ends of the threaded block 714 are slidably connected to two linear guide rails 716 respectively. The two linear guide rails 716 are installed in parallel on the inner side of the mounting plate 711. The guide slider 715 is also slidably connected to the two linear guide rails 716. The middle part of the guide slider 715 is slidably sleeved on the threaded rotating shaft 713.

[0039] Preferably, the electric brake release assembly 72 includes a connecting seat 721, an electric push rod mounting seat 722, an electric push rod guide seat 723, an electric push rod 724, and a brake block 725. The connecting seat 721 is bolted to the threaded block 714 and the guide slider 715. The electric push rod mounting seat 722 and the electric push rod guide seat 723 are respectively installed on the inner side of the connecting seat 721. An electric push rod support rib 726 is installed between the electric push rod mounting seat 722 and the connecting seat 721. The electric push rod 724 is bolted to the electric push rod mounting seat 722. The electric push rod 724 is electrically connected to the electrical control box 8. One end of the electric push rod 724 with a telescopic rod passes through the electric push rod guide seat 723. The end of the telescopic rod of the electric push rod 724 is fitted with a countersunk bolt to install the brake block 725. The brake block 725 is connected with a countersunk bolt for easy disassembly and replacement.

[0040] The working principle of this universal brake-releasing dummy trolley is as follows: By adjusting the mounting bolts of the central support device and the side support device, the horizontal position of the support device is adjusted. By adjusting the side support platform, the height of the side support assembly is adjusted. After the height is adjusted, it is locked and fixed by tightening nuts to prevent the support platform from falling off, thereby meeting the needs of supporting and transporting different types of vehicles. The electrical control box is equipped with a controller, battery, etc., which can control the braking force as needed and provide overload protection for the motor. The wheel tread braking and release can be realized by the extension and retraction of the electric push rod. When the power is off, the braking and release of the equipment can be realized by manual control through the manual rotating wheel, threaded shaft, threaded block, guide slider, and linear guide rail.

[0041] This utility model relates to a universal brake-releasing dummy trolley, featuring a brake-releasing device. Through the cooperation of an electric push rod and an electrical control box, it achieves electrically controlled brake-releasing, making brake-releasing operation more convenient and automated. It also has a manual control function; in the event of a power outage, manual control can be achieved via a manual rotating wheel, threaded shaft, threaded block, guide slider, and linear guide rail to brake and release the equipment. Thus, both electric and manual control can fulfill the braking and release functions. The brake-releasing devices on the two wheels are diagonally distributed to prevent the chassis from shifting or twisting, ensuring the overall stability of the dummy trolley. The overall design is simple, meets lightweight design requirements, is easy to transport, meets usage needs, and is low in cost, making it suitable for widespread use.

[0042] The above description, in conjunction with preferred technical solutions, provides a further detailed explanation of this utility model. It should not be construed that the specific implementation of the utility model is limited to these descriptions. For those skilled in the art, simple deductions and substitutions can be made without departing from the concept of this utility model, and all such modifications and substitutions should be considered within the scope of protection of this utility model.

Claims

1. A universal brake-releasing dummy trolley, characterized in that: The vehicle includes a chassis frame, on which a crossbeam is mounted. Side support devices are adjustable at both ends of the crossbeam, and each side support device has a height-adjustable side support assembly. A center support device is adjustable at the middle of the crossbeam. Wheel assemblies are mounted at the four corners of the chassis frame, and wheel brake release devices are mounted on both sides of the chassis frame. Each wheel brake release device includes an electric brake release assembly and a manual adjustment assembly. The electric brake release assembly is mounted on the manual adjustment assembly, which is mounted on the chassis frame. The electric brake release assembly is electrically connected to an electrical control box, which is mounted on the crossbeam.

2. The universal brake-releasing dummy trolley according to claim 1, characterized in that: The electric brake release assembly includes a connecting seat, an electric push rod mounting seat, an electric push rod guide seat, an electric push rod, and a brake block. The connecting seat is mounted on the manual adjustment assembly. The electric push rod mounting seat and the electric push rod guide seat are respectively mounted on the inner side of the connecting seat. An electric push rod support rib is installed between the electric push rod mounting seat and the connecting seat. The electric push rod is mounted on the electric push rod mounting seat. One end of the electric push rod with a telescopic rod passes through the electric push rod guide seat. A brake block is installed at the end of the telescopic rod of the electric push rod. The electric push rod is electrically connected to the electrical control box.

3. The universal brake-releasing dummy trolley according to claim 2, characterized in that: The manual adjustment assembly includes a mounting plate, a shaft guide seat, a threaded shaft, a threaded block, a guide slider, and linear guide rails. The mounting plate is mounted on the vehicle chassis. The shaft guide seat is mounted on one inner end of the mounting plate. The threaded shaft is rotatably mounted on the shaft guide seat. A manual wheel is mounted on one end of the threaded shaft, with the manual wheel extending outside the vehicle chassis. Two shaft shoulder retaining rings are fitted on the threaded shaft to limit its horizontal position. The two shaft shoulder retaining rings are located on both sides of the shaft guide seat. One shaft shoulder retaining ring, closer to the manual wheel, is fixedly connected to the threaded shaft, while the other shaft shoulder retaining ring, farther from the manual wheel, is movably connected to the threaded shaft and its position is limited by a pin inserted into the threaded shaft. A threaded block is threadedly connected to the threaded shaft. The two ends of the threaded block are slidably connected to two linear guide rails, which are installed parallel to each other on the inner side of the mounting plate. A guide slider is also slidably connected to the two linear guide rails. The middle part of the guide slider is slidably fitted onto the threaded shaft. The threaded block and the guide slider are threadedly connected to a connecting seat.

4. The universal brake-releasing dummy trolley according to claim 1, characterized in that: The side support device includes a side support base. The four corners of the side support base have first elongated holes. The side support base is adjustablely mounted on the crossbeam via the first elongated holes and bolts. Two sets of side support assemblies are symmetrically mounted on the upper end of the side support base. Each side support assembly includes a support pad, a support seat plate, a threaded support cylinder, a side support platform, and a fastening nut. The support seat plate is located at the upper end of the support pad. The support pad and support seat plate are bolted to the side support base. A threaded support cylinder is mounted on the support seat plate, and a side support platform is threaded onto the threaded support cylinder. A fastening nut is threaded onto the side support platform. A first support column is located at the upper end of the side support platform.

5. A universal brake-releasing dummy trolley according to claim 4, characterized in that: The side support assembly also includes a nylon pad, which is sleeved on the first support column. The upper surface of the nylon pad is flat, and the upper surface of the nylon pad is parallel to or protrudes from the upper surface of the first support column.

6. A universal brake-releasing dummy trolley according to claim 1, characterized in that: The central support device includes a central support base, a central support cylinder, and a central support platform. The central support base has second elongated holes at its four corners. The central support base is adjustablely mounted on the crossbeam through the second elongated holes and bolts. The central support cylinder is installed at the upper end of the central support base. Multiple reinforcing plates are installed at intervals between the central support cylinder and the central support base. The central support platform is installed at the upper end of the central support cylinder. A second support column is set in the middle of the central support platform. A central support pad is fitted on the second support column. The central support pad is installed on the central support platform by bolts.

7. A universal brake-releasing dummy trolley according to claim 1, characterized in that: The wheel assembly includes a wheel axle, a wheel mounting plate, a bearing, a bearing cover, and a wheel. The wheel axle is mounted on the chassis via the wheel mounting plate. The bearing and a bearing cover for positioning the bearing are mounted on the wheel axle. The wheel is mounted on the bearing, and the bearing cover is located on the outside of the wheel. Two retaining rings are also mounted on the wheel axle. The two retaining rings are respectively set in grooves opened on the wheel axle, with one retaining ring located on the inside of the wheel and the other retaining ring located on the outside of the bearing cover.

8. A universal brake-releasing dummy trolley according to claim 1, characterized in that: The crossbeam includes a lower base plate, an upper cover plate, side plates, a bottom baffle plate, and an end plate. Two side plates are installed parallel to each other between the lower base plate and the upper cover plate. The lower base plate has trapezoidal platforms protruding from the side plates on both sides of its middle portion. The upper cover plate has protruding side plates on both sides. Multiple first adjustment grooves are spaced apart on the protruding portions of the upper cover plate. An upwardly inclined bottom baffle plate is installed at both ends of the lower base plate, and the upper ends of the bottom baffle plate are fixed to the side plates on both sides. End plates are installed at the ends of the two side plates, and the end plates protrude from the side plates on both sides. The crossbeam also includes two reinforcing cover plates, multiple reinforcing ribs, and multiple side ribs. The two reinforcing cover plates are located at both ends of the crossbeam and are positioned between the side plates and the upper cover plate. The reinforcing cover plates have second adjustment grooves, which are opposite to the first adjustment grooves. The multiple reinforcing ribs are spaced apart between the two side plates. The multiple side ribs are positioned between the trapezoidal platforms, the side plates, and the upper cover plate, and are distributed in pairs on both sides of the crossbeam.

9. A universal brake-releasing dummy trolley according to claim 1, characterized in that: The chassis includes two side frames, with two support beams and two small crossbeams installed between the two side frames. The two support beams are located between the two small crossbeams, and a small longitudinal beam is installed between the two support beams. The wheel assembly is installed on the side frames, and two wheel brake release devices are installed on the two side frames respectively and are diagonally distributed.

10. A universal brake-releasing dummy trolley according to any one of claims 1 to 9, characterized in that: Anti-collision and shock-absorbing pads are installed at both ends of the vehicle chassis.

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