Adjustable auxiliary supporting device for low-temperature immersed pump terminal connector

Abstract

The utility model relates to the technical field of low-temperature pumps, in particular to an adjustable auxiliary supporting device for a low-temperature immersed pump terminal connector. An adjustable auxiliary supporting device for a low-temperature immersed pump terminal connector is characterized by comprising a front supporting frame, a roller support, rollers, a supporting platform, a rear supporting frame and a guide rail. According to field equipment arrangement, the auxiliary supporting device is installed on a foundation platform of the low-temperature immersed pump, the terminal connector of the low-temperature immersed pump is supported on the front supporting frame according to the position adjusting device installed on the terminal connector of the low-temperature immersed pump, then the height of the rear supporting frame is adjusted, a sealing pipe is lifted up, and therefore a top plate flange port is not affected by stress. And when equipment runs, the influence of equipment vibration on the fastener can be effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of cryogenic pumps, and in particular to an adjustable auxiliary support device for a cryogenic submersible pump terminal joint. Background Art

[0002] The terminal joint of a cryogenic submersible pump, as a key component of the cryogenic submersible pump, is used for the transmission of electrical or instrument signals, and at the same time isolates the atmosphere from the cryogenic flammable medium, playing an indispensable role in the operation safety and reliability of the cryogenic submersible pump.

[0003] According to the supporting design of each cryogenic submersible pump manufacturer, the cryogenic submersible pump is equipped with a pump well roof or a container roof, on which there is a connecting flange port for the terminal joint. When the cryogenic submersible pump is running, the low-temperature side of the terminal joint is connected to the roof flange port through fastening bolts, while the normal-temperature side is connected with a cable sealing pipe and a cable assembly. Since the roof flange port is a side port, the terminal joint, cable sealing pipe and cable of the cryogenic submersible pump are cantilevered out on the roof flange port, exerting a certain stress on the flange port. When the cryogenic submersible pump is disassembled, the terminal joint needs to be removed from the roof flange port to facilitate the removal of the roof and the cryogenic submersible pump. The conventional operation is to use a crane to assist. First, the terminal joint, cable sealing pipe and cable assembly are removed as a whole and placed on the ground or a temporarily built platform, and then the roof is removed. Since there are many supporting pipelines, instruments, etc. outside the cryogenic submersible pump roof, it is easy to damage the components during the hoisting process of the terminal joint, and there is a lack of necessary protection for temporary storage.

[0004] In order to eliminate the stress influence of the terminal joint on the roof flange port and avoid damage to the terminal joint or other parts during the disassembly process, an adjustable auxiliary support device for a cryogenic submersible pump terminal joint is designed. Summary of the Utility Model

[0005] In view of the above-mentioned technical problems, an adjustable auxiliary support device for a cryogenic submersible pump terminal joint is provided. In addition to meeting the basic support function, the utility model can also utilize the cooperation of rollers and guide rails to realize the axial movement and temporary storage of the terminal joint of the cryogenic submersible pump. At the same time, it is provided with a height adjustment function, which can be applied to different height scenarios, simplifies the on-site operation procedure, and optimizes the on-site application process.

[0006] The technical means adopted by the utility model are as follows:

[0007] An adjustable auxiliary support device for a cryogenic submersible pump terminal joint, the device includes a front support frame, a roller support frame, rollers, a support platform, a rear support frame, a guide rail, an upper support column, a handwheel, a driving screw, a driving box body, a lower support column, a lifting screw, and a base;

[0008] The guide rail and the support platform are both arranged horizontally. The support platform is detachably connected to the guide rail through rollers and roller brackets. The guide rails are symmetrically arranged horizontally on both longitudinal sides of the support platform and are located below the support platform. The support platform can move horizontally on the guide rails. The roller brackets are vertical in the vertical direction. The upper surface of the roller bracket is connected to the lower surface of the support platform, and the lower surface of the roller bracket is connected to the rollers.

[0009] The front support frame is connected to one end of the upper surface of the support platform, and the rear support frame is connected to the other end of the upper surface of the support platform. The front support frame can hold up the terminal joint of the cryogenic submersible pump, and the rear support frame can hold up the cable seal pipe of the cryogenic submersible pump. The front support frame and the rear support frame cooperate to ensure that the terminal joint and the cable seal pipe of the cryogenic submersible pump are coaxial.

[0010] The upper support column, the lifting screw, the lower support column and the base are all arranged vertically and are connected in sequence vertically. The upper surface of the upper support column is connected to the guide rail.

[0011] The drive box body is installed on the upper part of the lower support column. A gear box is installed in the drive box body. The drive screw is arranged longitudinally. The drive screw and the drive box body are coaxially matched longitudinally. The hand wheel is longitudinally coaxially arranged with the drive screw on the outside. The hand wheel can drive the drive screw to rotate by rotation, and at the same time the drive screw drives the gears in the drive box body to rotate.

[0012] The lifting screw and the drive box body are coaxially matched vertically. The gears in the drive box body can drive the lifting screw to move up and down in the vertical direction.

[0013] Further, the device further includes a guide rail platform, an upper support rib plate and a lower support rib plate. The guide rail platform is arranged horizontally. The upper surface of the guide rail platform is connected to the guide rail, and the lower surface of the guide rail platform is connected to the upper support column.

[0014] The upper support rib plate is fixedly connected to the upper support column and the guide rail platform, and the lower support rib plate is connected to the lower support column and the base.

[0015] Further, the device further includes stud I, nut I, washer III, nut II, washer IV.

[0016] The stud I is arranged vertically. The upper surface of the stud I is connected to the lower surface of the rear support frame. The stud I passes through the support platform and the guide rail platform. The nut I is located on the upper surface of the support platform and is meshed with the stud I. The nut II is located on the upper surface of the guide rail platform and is meshed with the stud I. The nut I and the nut II cooperate to enable the stud to move and be fixed in the up and down directions.

[0017] The washer III and the washer IV are respectively arranged in cooperation with the nut I and the nut II.

[0018] Furthermore, the device further includes a moving groove which is installed on the horizontal side of the support platform close to the rear support frame. The stud I is inserted into the moving groove and connected to the support platform. The stud I can move horizontally in the moving groove, and the nut I and the nut II can fix the position of the stud I in the moving groove.

[0019] Furthermore, the device further includes a bolt I, a washer I, a bolt II, a washer II, a pin shaft, and an opening pin;

[0020] The bolt I and the bolt II are both arranged in the vertical direction. The washer I and the washer II are respectively arranged in cooperation with the bolt I and the bolt II. The front support frame is detachably connected to the support platform through the bolt I and the washer I, and the roller bracket is detachably connected to the support platform through the bolt II and the washer II;

[0021] The pin shaft and the opening pin are arranged in cooperation with the roller coaxially. The roller and the roller bracket are connected through the pin shaft and the opening pin.

[0022] Furthermore, the device further includes a plurality of U-shaped grooves which are arranged longitudinally. The U-shaped grooves are arranged at the connection between the support platform and the front support frame and are arranged on the support platform. The bolt I can install the front support frame on the support platform through the U-shaped grooves.

[0023] Furthermore, the device further includes a bolt III, a nut III, and a washer V;

[0024] The guide rail is fixedly installed on the guide rail platform through the bolt III, the nut III, and the washer V.

[0025] Furthermore, the device further includes a bolt III, a nut III, and a washer V;

[0026] The guide rail is fixedly installed on the guide rail platform through the bolt III, the nut III, and the washer V.

[0027] Compared with the prior art, the utility model has the following advantages:

[0028] 1. When the cryogenic submersible pump is running, the auxiliary support device bears the weight of the terminal joint, cable sealing pipe and cable assembly of the cryogenic submersible pump, eliminating the stress borne by the top plate flange port; and a rubber pad is provided on the support surface, which can effectively reduce the influence of equipment vibration on the fastening effect of fasteners while increasing the friction. When the cryogenic submersible pump is disassembled, it is not necessary to assist with a crane. After removing the fastening nut of the terminal joint of the cryogenic submersible pump from the flange port, the terminal joint, cable sealing pipe and cable assembly of the cryogenic submersible pump can be axially moved a certain distance as a whole, so that the top plate can be freely removed, avoiding damage during the hoisting and disassembly process of the terminal joint of the cryogenic submersible pump. The axial position can be locked through the studs and nuts connected by the tail support frame.

[0029] 2. For the adjustable auxiliary support device for the terminal joint of the cryogenic submersible pump of the present utility model, under the operating conditions, the stress on the top plate flange port can be eliminated, reducing the fatigue risk of parts;

[0030] 3. For the adjustable auxiliary support device for the terminal joint of the cryogenic submersible pump of the present utility model, during disassembly, it is not necessary to use a crane. The terminal joint of the cryogenic submersible pump can be axially moved a certain distance for temporary storage, effectively avoiding damage caused during the hoisting process.

[0031] 4. For the adjustable auxiliary support device for the terminal joint of the cryogenic submersible pump of the present utility model, the height can be adjusted according to the installation height of the terminal joint of the cryogenic submersible pump and on-site requirements, and it is applicable to different height working conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for description in the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0033] Figure 1 It is the front view schematic diagram of the structural connection of the adjustable auxiliary support device for the terminal joint of a cryogenic submersible pump of the present utility model;

[0034] Figure 2 It is Figure 1 the side view schematic diagram of the structural connection of

[0035] Figure 3 It is Figure 1 the top view schematic diagram of the support platform in

[0036] Figure 4 It is the working state schematic diagram of the present utility model.

[0037] In the figure: 1. Bolt I; 2. Washer I; 3. Front support frame; 4. Bolt II; 5. Washer II; 6. Roller support; 7. Roller; 8. Pin shaft; 9. Split pin; 10. Support platform; 11. Rear support frame; 12. Stud I; 13. Nut I; 14. Washer III; 15. Nut II; 16. Washer IV; 17. Bolt III; 18. Nut III; 19. Washer V; 20. Guide rail; 21. Upper support column; 22. Handwheel; 23. Driving screw; 24. Driving box body; 25. Lower support column; 26. Guide rail platform; 27. Upper support rib plate; 28. Lifting screw; 29. Lower support rib plate; 30. Base; 31. U-shaped groove; 32. Terminal joint of cryogenic submersible pump; 33. Cable sealing pipe; 34. Moving groove. Detailed implementation manners

[0038] It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments may be combined with each other. The present utility model will be described in detail below with reference to the drawings and in combination with the embodiments.

[0039] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the drawings in the embodiments of the present utility model. Apparently, the described embodiments are only a part rather than all of the embodiments of the present utility model. The description of at least one exemplary embodiment below is actually only illustrative and in no way limits the present utility model and its application or use. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0040] It should be noted that the terms used herein are only for describing the specific implementation manners and are not intended to limit the exemplary implementation manners of the present utility model. As used herein, unless otherwise clearly specified in the context, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "include" and / or "comprise" are used in this specification, they indicate the presence of the described features, steps, operations, devices, components and / or their combinations.

[0041] Unless otherwise specifically stated, the relative arrangements, numerical expressions, and numerical values of the components and steps set forth in these embodiments do not limit the scope of the present utility model. At the same time, it should be clear that, for the sake of convenience of description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationships. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the said technologies, methods, and devices should be regarded as part of the authorized specification. In all the examples shown and discussed here, any specific value should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0042] In the description of the present utility model, it should be understood that the orientation or positional relationships indicated by orientation terms such as "front, rear, upper, lower, left, right", "lateral, vertical, perpendicular, horizontal", and "top, bottom", etc. are generally based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description. Without contrary description, these orientation terms do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and thus should not be construed as limiting the protection scope of the present utility model: the orientation terms "inner, outer" refer to the inside and outside relative to the contour of each component itself.

[0043] For the convenience of description, spatial relative terms such as "above...", "over...", "on the upper surface of...", "upper...", etc. can be used here to describe the spatial positional relationship between a device or feature shown in the figure and other devices or features. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation described in the figure for the device. For example, if the device in the drawing is inverted, the device described as "above other devices or structures" or "over other devices or structures" will then be positioned "below other devices or structures" or "under other devices or structures". Thus, the exemplary term "above..." can include both the orientations of "above..." and "below...". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and corresponding interpretations should be made for the spatial relative descriptions used here.

[0044] An adjustable auxiliary support device for a cryogenic submersible pump terminal joint, such as Figure 1 , Figure 2 and Figure 3As shown, the device includes a front support frame 3, a roller support 6, rollers 7, a support platform 10, a rear support frame 11, a guide rail 20, an upper support column 21, a handwheel 22, a driving screw 23, a driving box 24, a lower support column 25, a lifting screw 28, and a base 30;

[0045] The guide rail 20 and the support platform 10 are both arranged horizontally. The support platform 10 is detachably connected to the guide rail 20 through the rollers 7 and the roller support 6. The guide rail 20 is symmetrically arranged along the horizontal direction on the longitudinal sides of the support platform 10, and the guide rail 20 is located below the support platform 10. The support platform 10 can move horizontally on the guide rail 20. The roller support 6 is vertical in the vertical direction. The upper surface of the roller support 6 is connected to the lower surface of the support platform 10, and the lower surface of the roller support 6 is connected to the rollers 7; the roller support 6 can provide protection for the rollers 7 to avoid the direct pressure of the support platform 10, improve the stability of the device, and reduce vibration;

[0046] The front support frame 3 is connected to one end of the upper surface of the support platform 10, and the rear support frame 11 is connected to the other side of the upper surface of the support platform 10. As Figure 4 shown, the front support frame 3 can hold up the terminal joint 32 of the cryogenic submersible pump, and the rear support frame 11 can hold up the cable sealing pipe 33. The front support frame 3 and the rear support frame 11 are arranged in cooperation to ensure that the terminal joint 32 and the cable sealing pipe 33 of the cryogenic submersible pump are coaxially fixedly connected, facilitating the disassembly and position adjustment of the cryogenic submersible pump.

[0047] The upper support column 21, the lifting screw 28, the lower support column 25, and the base 30 are all arranged vertically and are connected in sequence vertically. The upper surface of the upper support column 21 is connected to the guide rail 20;

[0048] The driving box 24 is installed on the upper part of the lower support column 25. A gear box is installed in the driving box. The driving screw 23 is arranged longitudinally. The driving screw 23 is coaxially and longitudinally matched with the driving box 24. The handwheel 22 is coaxially and longitudinally arranged outside the driving screw 23. The handwheel 22 can drive the driving screw 23 to rotate by rotation. At the same time, the driving screw 23 drives the gears in the driving box 24 to rotate;

[0049] The lifting screw 28 is coaxially and vertically matched with the driving box 24. The gears in the driving box 24 can drive the lifting screw 28 to move vertically up and down.

[0050] According to the on-site equipment layout, the auxiliary support device is installed on the foundation platform of the cryogenic submersible pump. Adjust the device according to the installation position of the terminal joint 32 of the cryogenic submersible pump, support the terminal joint 32 of the cryogenic submersible pump on the front support frame 3, and then adjust the height of the rear support frame to lift the sealing pipe so that the flange port of the top plate is not affected by stress. During the operation of the equipment, it can also effectively reduce the impact of equipment vibration on fasteners.

[0051] When overhauling and disassembling, after removing the fastening nut of the flange port of the top plate, the terminal joint 32, the cable sealing pipe 33 and the cable assembly of the cryogenic submersible pump can be axially moved a certain distance to disengage from the flange pipe orifice of the top plate, and after locking and fixing, they are temporarily stored to avoid possible damage during the hoisting process.

[0052] The utility model is installed on the foundation platform to provide auxiliary support for the terminal joint 32 of the cryogenic submersible pump. At the same time, during disassembly, it can be axially moved and temporarily stored, realizing the characteristics of convenient disassembly and assembly and maintaining the stability of the equipment.

[0053] In this embodiment, the device further includes a guide rail platform 26, an upper support rib plate 27 and a lower support rib plate 29. The guide rail platform 26 is arranged in the horizontal direction. The upper surface of the guide rail platform 26 is connected to the guide rail 20, and the lower surface of the guide rail platform 26 is connected to the upper support column 21. The guide rail platform 26 can provide support for the guide rail 20 and improve the stability of the device;

[0054] The upper support rib plate 27 is fixedly connected to the upper support column 21 and the guide rail platform 26, and the lower support rib plate 29 is connected to the lower support column 25 and the base 30. The settings of the upper support rib plate 27 and the lower support rib plate 29 greatly improve the stability and strength of the device and reduce the vibration of the device.

[0055] Preferably, as Figure 1 shown, the device further includes a stud I 12, a nut I 13, a washer III 14, a nut II 15, a washer IV 16;

[0056] The stud I 12 is arranged in the vertical direction. The upper surface of the stud I 12 is coaxially connected to the lower surface of the rear support frame 11. The stud I 12 passes through the support platform 10 and the guide rail platform 26. The nut I 13 is located on the upper surface of the support platform 10 and is meshed with the stud I 12. The nut II 15 is located on the upper surface of the guide rail platform 26 and is meshed with the stud I 12. At the same time, the stud I 12 makes the support platform 10 and the guide rail 20 fixedly connected through the nut I 13 and the nut II 15, so that the support platform 10, the guide rail 20 and the guide rail platform 26 can be fixedly and tightly connected to ensure the stability of the device and avoid movement caused by vibration. The washer III 14 and the washer IV 16 are respectively arranged in cooperation with the nut I 13 and the nut II 15 to further reduce the influence of device vibration.

[0057] In this embodiment, the device further includes a moving groove 34. The moving groove 34 is installed on the horizontal side of the support platform 10 close to the rear support frame 11. The stud I 12 is inserted into the moving groove 34 and connected to the support platform 10. The stud I 12 can move horizontally within the moving groove 34, and the nut I 13 and the nut II 15 can fix the position of the stud I 12 within the moving groove 34.

[0058] The device can adjust the height of the stud I 12 by adjusting and screwing the nut I 13, so that the device can adjust the height in the up and down direction. Then, by screwing the nut II 15, the stud is tightened to fix its position.

[0059] In this embodiment, as Figure 1 shown, the device further includes a bolt I 1, a washer I 2, a bolt II 4, a washer II 5, a pin shaft 8, and a split pin 9;

[0060] Both the bolt I 1 and the bolt II 4 are arranged in the vertical direction. The washer I 2 and the washer II 5 are respectively arranged in cooperation with the bolt I 1 and the bolt II 4. The front support frame 3 is detachably connected to the support platform 10 through the bolt I 1 and the washer I 2, and the roller bracket 6 is detachably connected to the support platform 10 through the bolt II 4 and the washer II 5. Through the bolt I 1 and the bolt II 4, the front support frame 3 and the roller bracket 6 are tightly connected to the support platform 10 to ensure the stability of the device. At the same time, through the arrangement of the washer I 2 and the washer II 5, the efficiency in the disassembly process is improved, the wear is reduced, and the service life of the bolt is prolonged;

[0061] The pin shaft 8 and the split pin 9 are arranged coaxially and in cooperation with the roller 7. The roller 7 and the roller bracket 6 are connected through the pin shaft 8 and the split pin 9. The arrangement of the pin shaft 8 and the split pin 9 enables the roller 7 to be fixed when it moves to the required position, avoiding movement during subsequent installation;

[0062] Preferably, as Figure 3 shown, the device further includes a U-shaped groove 31. The U-shaped groove 31 is arranged longitudinally. The U-shaped groove is arranged at the connection between the support platform 10 and the front support frame 3 and is arranged on the support platform 10. The bolt I 1 can install the front support frame 3 on the support platform 10 through the U-shaped groove 31, so that the front support frame 3 can move longitudinally through the U-shaped groove 31.

[0063] Preferably, as Figure 1 shown, the device further includes a bolt III 17, a nut III 18, and a washer V 19;

[0064] The guide rail 20 is fixedly installed on the guide rail platform 26 through bolts III 17, nuts III 18 and washers V 19, which improves the connection stability between the guide rail 20 and the guide rail platform 26 and reduces the vibration of the device.

[0065] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An adjustable auxiliary support device for a cryogenic submersible pump terminal joint, characterized in that: The device includes a front support frame (3), a roller support (6), rollers (7), a support platform (10), a rear support frame (11), a guide rail (20), an upper support column (21), a handwheel (22), a driving screw (23), a driving box body (24), a lower support column (25), a lifting screw (28), and a base (30); The guide rail (20) and the support platform (10) are both arranged in the horizontal direction. The support platform (10) is detachably connected to the guide rail (20) through the rollers (7) and the roller support (6). The guide rail (20) is symmetrically arranged in the horizontal direction on the longitudinal two sides of the support platform (10), and the guide rail (20) is located below the support platform (10). The support platform (10) can move horizontally on the guide rail (20). The roller support (6) is vertical in the vertical direction. The upper surface of the roller support (6) is connected to the lower surface of the support platform (10), and the lower surface of the roller support (6) is connected to the rollers (7); The front support frame (3) is connected to one end of the upper surface of the support platform (10), and the rear support frame (11) is connected to the other end of the upper surface of the support platform (10). The front support frame (3) can hold up the terminal joint (32) of the cryogenic submersible pump, and the rear support frame (11) can hold up the cable sealing tube (33) of the cryogenic submersible pump. The front support frame (3) and the rear support frame (11) cooperate to ensure that the terminal joint (32) and the cable sealing tube (33) of the cryogenic submersible pump are coaxial; The upper support column (21), the lifting screw (28), the lower support column (25), and the base (30) are all arranged in the vertical direction and are sequentially connected in the vertical direction. The upper surface of the upper support column (21) is connected to the guide rail (20); The driving box body (24) is installed on the upper part of the lower support column (25). A gear box is installed in the driving box body. The driving screw (23) is arranged longitudinally. The driving screw (23) is coaxially and longitudinally matched with the driving box body (24). The handwheel (22) is coaxially and longitudinally arranged outside the driving screw (23). The handwheel (22) can drive the driving screw (23) to rotate by rotation. At the same time, the driving screw (23) drives the gears in the driving box body (24) to rotate; The lifting screw (28) is coaxially and vertically matched with the driving box body (24). The gears in the driving box body (24) can drive the lifting screw (28) to move up and down in the vertical direction.

2. The device according to claim 1, characterized in that: The device further includes a guide rail platform (26), an upper support rib plate (27), and a lower support rib plate (29). The guide rail platform (26) is arranged in the horizontal direction. The upper surface of the guide rail platform (26) is connected to the guide rail (20), and the lower surface of the guide rail platform (26) is connected to the upper support column (21); The upper support rib plate (27) is fixedly connected to the upper support column (21) and the guide rail platform (26), and the lower support rib plate (29) is connected to the lower support column (25) and the base (30).

3. The device according to claim 2, characterized in that: The device further includes stud I (12), nut I (13), washer III (14), nut II (15), and washer IV (16); The stud I (12) is arranged in the vertical direction. The upper surface of the stud I (12) is connected to the lower surface of the rear support frame (11). The stud I (12) passes through the support platform (10) and the guide rail platform (26). The nut I (13) is located on the upper surface of the support platform (10) and is meshed and connected with the stud I (12). The nut II (15) is located on the upper surface of the guide rail platform (26) and is meshed and connected with the stud I (12). The nut I (13) and the nut II (15) cooperate to enable the up-and-down movement and fixation of the stud. The washer III (14) and the washer IV (16) are respectively arranged in cooperation with the nut I (13) and the nut II (15).

4. The device according to claim 3, characterized in that: The device further includes a moving groove (34). The moving groove (34) is installed on the horizontal side of the support platform (10) close to the rear support frame (11). The stud I (12) is inserted into the moving groove (34) and connected to the support platform (10). The stud I (12) can move horizontally in the moving groove (34), and the nut I (13) and the nut II (15) can fix the position of the stud I (12) in the moving groove (34).

5. The device according to claim 1, characterized in that: The device further includes a bolt I (1), a washer I (2), a bolt II (4), a washer II (5), a pin shaft (8), and a split pin (9). Both the bolt I (1) and the bolt II (4) are arranged in the vertical direction. The washer I (2) and the washer II (5) are respectively arranged in cooperation with the bolt I (1) and the bolt II (4). The front support frame (3) is detachably connected to the support platform (10) through the bolt I (1) and the washer I (2). The roller support (6) is detachably connected to the support platform (10) through the bolt II (4) and the washer II (5). The pin shaft (8) and the split pin (9) are coaxially arranged in cooperation with the roller (7). The roller (7) and the roller support (6) are connected through the pin shaft (8) and the split pin (9).

6. The device according to claim 5, characterized in that: The device further includes a plurality of U-shaped grooves (31). The U-shaped grooves (31) are arranged longitudinally. The U-shaped grooves (31) are arranged at the connection between the support platform (10) and the front support frame (3) and are arranged on the support platform (10). The bolt I (1) can install the front support frame (3) on the support platform (10) through the U-shaped grooves (31).

7. The device according to claim 2, characterized in that: The device further includes a bolt III (17), a nut III (18), and a washer V (19). The guide rail (20) is fixedly installed on the guide rail platform (26) through the bolt III (17), the nut III (18), and the washer V (19).

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