Batch dismounting and mounting device for lower side doors of railway wagon

Abstract

The utility model relates to a batch dismounting and mounting device for lower side doors of railway wagons. The batch dismounting and mounting device comprises an assembly table mounted on a machine base, and an auxiliary hoisting assembly, a side fence, a fence, a bearing part, a pair of clamping and blocking parts and a U-shaped block which are fixed on the assembly table. The side fence and the fence are oppositely arranged on the two sides in the length direction, the bearing part is located between the side fence and the fence, and the clamping and blocking parts are located between the side fence and the bracket and between the fence and the bracket respectively. The bearing part comprises a bracket, a first blocking fence and a second blocking fence, and the first blocking fence is higher than the second blocking fence. The clamping and blocking part comprises a plurality of clamping plates which are distributed at intervals in the width direction, and the lower portion of the truck door can be inserted between every two adjacent clamping plates. The U-shaped block and the second blocking fence are located on the same side and located outside the second blocking fence. And the lower part of the truck door can be inserted into the notch of the U-shaped block. After the device is used in the disassembly and assembly operation of the truck door, the labor intensity of operators can be reduced, the number of operators can be reduced, the operation efficiency can be improved, and the potential safety hazard risk of operation can be reduced.

Description

Technical Field

[0001] The utility model relates to the field of doors of railway freight trains, in particular to a batch disassembly and assembly device for lower side doors of railway freight trains. Background Art

[0002] In the past, due to the lack of special disassembly and assembly tools, the disassembly and assembly of relatively large and heavy doors required the cooperation of multiple people. Although the operation process could be completed with the help of overhead cranes / electric hoists, forklifts, etc., it still required multiple people to lift and support the doors to complete the installation and disassembly operations. As a result, the disassembly and assembly of doors had high work intensity, low work efficiency and high work safety risks. Utility Model Content

[0003] The utility model provides a batch disassembly and assembly device for lower side doors of railway freight cars. When used in the disassembly and assembly operation of freight car doors, it can not only reduce the labor intensity of operators, but also reduce the number of operators, improve operation efficiency, and reduce the risk of hidden safety hazards in operations.

[0004] The utility model solves the technical problem by adopting a technical solution: a batch disassembly and assembly device for lower side doors of railway freight cars, comprising:

[0005] An assembly table, mounted on the upper part of the machine base;

[0006] The auxiliary lifting assembly is fixed at a side corner of the upper part of the assembly platform; it includes a vertical pole part and a suspension arm part, the lower end of the vertical pole part is connected to the assembly platform, and the suspension arm part is hinged to the upper end of the vertical pole part horizontally and enables the suspension arm part to rotate in a plane; the suspension arm part can be equipped with a lifting unit, or can be optionally equipped with an electric hoist-chain unit, etc.;

[0007] A side rail fixed to the upper portion of the assembly platform, located on one side edge in the length direction of the assembly platform and on the same side as the auxiliary hanging assembly;

[0008] A fence, fixed to the upper part of the assembly platform and located on the other side in the length direction of the assembly platform;

[0009] A supporting portion, fixed to the upper end surface of the assembly platform and located between the side rails and the fence; comprising a bracket, a first barrier and a second barrier, wherein the height of the first barrier is greater than the height of the second barrier; the bracket extends along the width direction of the assembly platform, the first barrier is fixed to one end of the bracket away from the auxiliary hanging assembly, and the second barrier is fixed to one end of the bracket close to the auxiliary hanging assembly;

[0010] A pair of blocking parts are fixed on the upper end surface of the assembly platform, and are respectively located between the side rail and the bracket and between the fence and the bracket; including a connecting seat and a plurality of clamping plates fixed on the connecting seat; the clamping plates are alternately distributed along the width direction of the assembly platform and the upper ends of the clamping plates extend upwardly out of the connecting seat; the lower part of the truck door can be inserted between two adjacent clamping plates;

[0011] And a U-shaped block is fixed on the upper end surface of the assembly table and is on the same side as the second guardrail and is located outside the second guardrail; the notch of the U-shaped block faces upward and the groove extends along the length direction of the assembly table; the lower part of the truck door can be inserted into the long strip notch of the U-shaped block.

[0012] The auxiliary lifting assembly is used when the truck door is lifted onto the bracket of the supporting portion and when the truck door is moved on the assembly platform.

[0013] The first barrier can support the middle part of the door panel of the truck door. The second barrier can contact the lower part of the truck door to prevent the truck door from sliding off the bracket.

[0014] After the multiple truck doors are hoisted onto the bracket, the truck doors are placed at an angle so that the first barrier supports the middle part of the door panel of the rearmost truck door, and the second barrier blocks the lower end of the frontmost truck door. With the help of the two barriers, the multiple truck doors placed on the bracket can be stably stacked on the supporting part.

[0015] After the truck door is stacked obliquely on the bracket, the left and right sides of the lower part of the truck door are inserted between two adjacent pallets, which can prevent the truck door from sliding in the front and rear directions, thereby improving the stability and safety of the truck door stacking.

[0016] The side rails and the fence can prevent the truck door from sliding to the left or right.

[0017] The base is provided with a wheel assembly so that the base can move. A driving unit for driving the wheels to rotate can be arranged on the base, and the base can also be moved by external traction.

[0018] During operation, the worker stands in the fence and can control the auxiliary hanging assembly to move the truck door placed on the supporting part, move the truck door to be replaced and installed to the front side and insert the lower center position of the truck door into the notch of the U-shaped block, and then tilt the truck door toward one side of the carriage so that the hinge part on the truck door corresponds to the pivot part on the carriage. Therefore, when installing the truck door on the carriage, with the help of the device involved in this patent, it is no longer necessary for multiple people to work at the same time, which can improve the operation efficiency. The lower part of the truck door is inserted into the long strip groove of the U-shaped block, which can ensure the stability of the support for the lower part of the truck door, and can ensure the safety of the objects being operated and the personal safety of the operators. In addition, the operator is protected by the fence in the fence, and it is not easy to fall off the device during operation. Moreover, the position where the operator stands is clearly distinguished from the placement position of the truck door, so it is not easy for the truck door to hit, smash, or squeeze the operator.

[0019] Optionally, a lifting assembly is installed on the machine base and the lifting assembly can drive the assembly platform to move up and down in the vertical direction relative to the machine base. As the assembly platform is raised and lowered, the height position of the truck door stacked on the supporting part can be changed, and the height position of the truck door and the height position of the pivot part on the carriage can be adaptively adjusted according to the construction requirements on site to enter the best matching state, which helps to improve the working efficiency and ensure the installation quality.

[0020] Optionally, a slide assembly is provided on the assembly platform, and the supporting portion, the blocking portion and the U-shaped block are all fixedly mounted on a slide body of the slide assembly. The slide assembly can perform linear reciprocating movement relative to the assembly platform in the width direction.

[0021] The travel distance of the slide assembly for reciprocating relative to the assembly table along the width direction does not need to be too large, and is generally controlled within a range of 5 cm to 20 cm.

[0022] When the supporting part, the blocking part and the U-shaped block move along the width direction with the sliding seat assembly, the distance between them and the vehicle compartment can be adjusted, which is helpful for the installation of the truck door, improves the operation efficiency and ensures the installation quality.

[0023] Optionally, a slide assembly is provided on the assembly platform and the U-shaped block is fixedly mounted on a slide body of the slide assembly. The slide assembly can perform linear reciprocating movement relative to the assembly platform in the width direction.

[0024] Optionally, a blocking rod is further included; two vertical rods are fixedly provided on one side of the assembly platform where the barrier 1 is provided, and the two vertical rods are respectively close to the side rail and the fence. One end of the blocking rod is pivotally matched with the upper end of one vertical rod, and the other end is matched with a bayonet fixed on the upper part of the other vertical rod. When the blocking rod rotates in a vertical plane, it can be inserted into the bayonet from above and downwardly into the bayonet, so that the blocking rod can be horizontally maintained above the barrier 1.

[0025] After the truck doors are stacked on the supporting portion, the upper portion of the rearmost truck door can lean against the blocking rod, so that the blocking rod can support the upper portion of the truck door.

[0026] The blocking rod is arranged to support the upper part of the truck door, so as to prevent the truck door from tilting and falling from the supporting part.

[0027] Optionally, a door is formed on the fence and bolts are provided on the upper parts of the vertical arms on both sides of the door. One end of the bolt is pivotally matched on one vertical arm of the door, and the other end is matched with a bayonet fixed on the upper part of the vertical arm on the other side of the door.

[0028] When the bolt rod rotates in a vertical plane, it can be inserted into the bayonet from above the bayonet downwards, so that the bolt rod can be horizontally maintained at the upper part of the door part.

[0029] Optionally, the machine further comprises a ladder arranged in the vertical direction, wherein the upper end of the ladder is connected to the outer wall of the assembly platform, and the lower end of the ladder is connected to the machine base.

[0030] Optionally, a box is provided in the fence, and the box is provided with at least drawers for accommodating spare parts and working tools.

[0031] The beneficial effect of the utility model is that after the patent is used in the disassembly and assembly operation of the truck door, it can not only reduce the labor intensity of the operators, but also reduce the number of operators and improve the operation efficiency, and reduce the risk of hidden safety hazards in the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 to Figure 2 This is a schematic diagram of the three-dimensional structure of the implementation scheme of this patent.

[0033] Figure 3 It is a structural schematic diagram of the supporting part.

[0034] Figure 4 It is a schematic diagram of the cross-sectional structure of the blocking part.

[0035] Figure 5 This is a schematic diagram of the working status.

[0036] In the figure: 10 machine base; 20 assembly table, 21 ladder; 30 auxiliary lifting assembly; 40 side rails; 50 fence, 51 bolt rod, 52 first buckle; 60 supporting part, 61 bracket, 62 first barrier, 63 second barrier; 70 blocking part, 71 connecting seat, 72 clamping plate; 80 barrier rod, 81 first vertical rod, 82 second vertical rod, 83 second buckle; 90 U-shaped block; 100 truck door, 101 hinged part. DETAILED DESCRIPTION

[0037] The structures, proportions, sizes, etc. illustrated in the drawings of the specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read. They are not used to limit the limiting conditions for the implementation of the utility model, so they have no substantial technical significance. Any modification of the structure, change of the proportional relationship or adjustment of the size should still fall within the scope of the technical content disclosed by the utility model without affecting the effects and purposes that can be achieved by the utility model. At the same time, the terms such as "upper", "lower", "front", "back", "middle" and so on quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the utility model, the change or adjustment of their relative relationship. In addition, the positive direction of the X-axis in the figure is the front, and the reverse direction is the back; the positive direction of the Y-axis is the left, and the reverse direction is the right; the positive direction of the Z-axis is the top, and the reverse direction is the bottom. Without substantially changing the technical content, it should also be regarded as the scope of the implementation of the utility model.

[0038] like Figures 1 to 4 The device for disassembling and assembling lower side doors of a railway freight car shown in the figure comprises: an assembly platform 20 installed on the upper part of a machine base 10, an auxiliary hanging assembly 30 fixed at a side corner position (left front corner position) of the upper part of the assembly platform 20, a side rail 40 fixed at the left side of the upper part of the assembly platform 20, a fence 50 fixed at the upper right part of the assembly platform 20, a supporting portion 60 fixed to the upper end surface of the assembly platform 20 and located between the side rail 40 and the fence 50, a pair of blocking portions 70 fixed to the upper end surface of the assembly platform 20 and respectively located on the inner side of the side rail 40 and the inner side of the fence, a blocking rod 80 arranged on the rear side of the assembly platform 20, and a U-shaped block 90 fixed to the upper end surface of the assembly platform 20.

[0039] The base 10 may be provided with a wheel assembly so that the base 10 can move. A driving unit for driving the wheels to rotate may be provided on the base 10, and the base 10 may also be moved by external traction.

[0040] The auxiliary lifting assembly 30 includes a vertical pole part and a lifting arm part. The lower end of the vertical pole part is connected to the assembly platform 20, and the lifting arm part is hinged horizontally to the upper end of the vertical pole part so that the lifting arm part can rotate in a plane (including a horizontal plane). The lifting arm part can be equipped with a lifting unit, or various types of lifting units / lifting mechanisms such as electric hoists-chain units can be optionally installed. The lifting unit / lifting mechanism configured here can be selected in the prior art, so it is not shown in the drawing and is not repeated again.

[0041] The auxiliary lifting assembly 30 is used when the truck door 100 is lifted onto the bracket 61 of the supporting portion 60 and when the truck door 100 is moved on the assembly platform 20 .

[0042] The side rail 40 is located at the left edge of the assembly platform 20 in the length direction, and is on the same side as the setting position of the auxiliary hanging assembly 30. The fence 50 is located on the right side in the length direction of the assembly platform 20. The side rail 40 and the fence 50 can prevent the truck door 100 from sliding off the assembly platform 20 to the left or right.

[0043] The understanding of the side rails 40 in this patent should include the form shown in the figure, and should also include a fence-like form, that is, two fences 50 are set on both sides of the assembly table.

[0044] In order to facilitate the workers to enter the fence 50, a door portion is formed on the fence 50 and bolt rods 51 are provided on the upper parts of the vertical arms on both sides of the door portion. One end of the bolt rod 51 is pivotally matched with one vertical arm of the door portion, and the other end is matched with a first snap-in 52 fixed to the upper part of the vertical arm on the other side of the door portion. When the bolt rod 1 rotates in a vertical plane, it can be inserted into the first snap-in 52 from above, so that the bolt rod 51 can be horizontally maintained on the upper part of the door portion.

[0045] The supporting part 60 includes a bracket 61, a barrier 1 62 and a barrier 2 63. The height of the barrier 1 62 is much greater than the height of the barrier 2 63. The bracket 61 is arranged to extend along the width direction / front-rear direction of the assembly platform 20. The barrier 1 62 is fixed to the rear end of the bracket 61, and the barrier 2 63 is fixed to the front end of the bracket. In order to allow the truck door to be placed on the bracket 61 at an angle, the barrier 1 62 can support the middle part of the door panel of the truck door 100, and the barrier 2 63 can contact the lower part of the truck door 100, so as to prevent the truck door 100 from sliding off the bracket 61.

[0046] The blocking portion 70 includes a connection seat 71 and a plurality of clamping plates 72 fixed to the connection seat 71. The clamping plates 72 are alternately distributed along the width direction of the assembly platform 20 and the upper ends of the clamping plates 72 extend upward out of the connection seat 71. The lower portion of the truck door 100 can be inserted into a slot formed by two adjacent clamping plates 72.

[0047] After the plurality of truck doors 100 are hoisted onto the bracket 61, the truck doors 100 are placed at an angle so that the barrier 1 62 supports the middle part of the door panel of the rearmost truck door 100, and the barrier 2 63 blocks the lower end of the frontmost truck door 100. With the help of the two barriers, the plurality of truck doors 100 placed on the bracket 61 can be stably stacked on the supporting portion 60.

[0048] After the truck door 100 is stacked obliquely on the bracket 61, the left and right sides of the lower part of the truck door 100 are inserted between two adjacent card plates 72, which can prevent the truck door 100 from sliding in the front and rear directions, thereby improving the stability and safety of the stacking of the truck door 100.

[0049] Two vertical poles (i.e., a first vertical pole 81 and a second vertical pole 82) are fixedly provided on one side of the assembly platform 20 where the barrier 62 is provided (i.e., the rear side of the assembly platform 20), and the two vertical poles are respectively placed against the inner side of the side rail 40 and the inner side of the fence 50, so that the barrier 62 is located between the two vertical poles. One end of the barrier rod 80 is pivotally matched with the upper end of the first vertical pole 81, and the other end is matched with the second snap-in 83 fixed on the upper part of the second vertical pole 82. When the barrier rod 80 rotates in a vertical plane, it can be inserted into the second snap-in 83 from above, so that the barrier rod 80 can be kept horizontally above the barrier 62 (including the oblique upper position).

[0050] After the truck doors 100 are placed on the supporting portion 60, the upper portion of the rearmost truck door 100 can lean against the blocking rod 80, so that the blocking rod 80 can support the upper portion of the truck door 100. The blocking rod 80 can support the upper portion of the truck door 100, thereby preventing the truck door 100 from tilting down from the supporting portion 60.

[0051] The U-shaped block 90 is fixed to the upper end surface of the assembly platform 20 and is on the same side as the second barrier 63, and is located outside / outside front of the second barrier 63. The slot of the U-shaped block 90 faces upward and the slot extends along the length direction (left-right direction) of the assembly platform 20. The lower part of the truck door 100 can be inserted into the long strip slot of the U-shaped block 90, as shown in FIG. Figure 5 .

[0052] During operation, a worker standing in the fence 50 can control the auxiliary hanging assembly 30 to move the truck door 100 placed on the supporting portion 60, move the truck door to be replaced and installed to the front side and insert the lower center position of the truck door 100 into the notch of the U-shaped block 90, and then tilt the truck door toward one side of the carriage (see FIG. Figure 5 ), so that the hinge portion on the truck door 100 corresponds to the pivot portion on the vehicle body.

[0053] When the truck door 100 is installed on the carriage, with the aid of the device involved in this patent, it is no longer necessary for multiple people to work at the same time, which can improve the work efficiency. The lower part of the truck door 100 is inserted into the long strip groove of the U-shaped block 90, which can ensure the stability of the support of the lower part of the truck door 100 during the installation operation, and can ensure the safety of the objects being operated and the personal safety of the operators.

[0054] In addition, the operator is protected by the fence 50 and is not likely to fall off the device during operation. Moreover, the position where the operator stands is clearly distinguished from the position where the truck door 100 is placed, so it is not likely for the truck door 100 to hit, smash, or squeeze the operator.

[0055] A lifting assembly may be installed on the base 10 and the lifting assembly can drive the assembly platform 20 to move up and down in the vertical direction (up and down direction) relative to the base 10. As the assembly platform 20 is raised and lowered, the height position of the truck door 100 placed on the supporting portion 60 can be changed, and the height position of the truck door 100 and the height position of the pivot portion on the carriage can be adaptively adjusted to the best matching state according to the construction requirements on site, which helps to improve the working efficiency and ensure the installation quality.

[0056] In one case, a slide assembly may be provided on the assembly table 20, and the supporting portion 60, the blocking portion 70 and the U-shaped block 90 are all fixedly mounted on the slide body of the slide assembly. The slide assembly can make linear reciprocating movements relative to the assembly table 20 in the width direction. The travel distance of the slide assembly for reciprocating movement relative to the assembly table in the width direction does not need to be too large, and is generally controlled in the range of 5 cm to 20 cm. When the supporting portion 60, the blocking portion 70 and the U-shaped block 90 move along the width direction with the slide assembly, their distance from the carriage can be adjusted, which is helpful for the installation of truck doors, improves work efficiency and ensures installation quality.

[0057] In another case, a slide assembly may be provided on the assembly platform 20 and the U-shaped block 90 may be fixedly mounted on the slide body of the slide assembly. The slide assembly may reciprocate along a straight line in the width direction relative to the assembly platform 20.

[0058] The ladder 21 arranged in the vertical direction is also convenient for the operator to enter the fence 50. The upper end of the ladder 21 is connected to the outer wall of the assembly table 20, and the lower end is connected to the base 10.

[0059] Optionally, a box is provided in the fence, and the box is provided with at least drawers for accommodating spare parts and working tools.

[0060] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. The present invention can be improved in many aspects without violating the overall concept, and those familiar with the technology can modify or change the above embodiments without violating the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the relevant technical field without departing from the spirit and technical concept disclosed by the present invention should still be covered by the claims of the present invention.

Claims

1. A batch disassembly and assembly device for lower side doors of railway freight cars, characterized in that: include: An assembly table, mounted on the upper part of the machine base; The auxiliary hanging assembly is fixed at a corner position on one side of the upper part of the assembly platform; it includes a vertical pole part and a hanging arm part, the lower end of the vertical pole part is connected to the assembly platform, and the hanging arm part is horizontally hinged to the upper end of the vertical pole part so that the hanging arm part can rotate in a plane; Side rail, fixed on the upper part of the assembly platform, located on one side edge in the length direction of the assembly platform and on the same side as the auxiliary hanging assembly; A fence is fixed on the upper part of the assembly table and is located on the other side of the length direction of the assembly table; The supporting part is fixed on the upper end surface of the assembly platform and is located between the side rail and the fence; it includes a bracket, a barrier 1 and a barrier 2, wherein the height of the barrier 1 is greater than the height of the barrier 2; the bracket extends along the width direction of the assembly platform, the barrier 1 is fixed to an end of the bracket away from the auxiliary hanging assembly, and the barrier 2 is fixed to an end of the bracket close to the auxiliary hanging assembly; A pair of blocking parts are fixed to the upper end surface of the assembly platform, and are respectively located between the side rail and the bracket and between the fence and the bracket; they include a connecting seat and a plurality of clamping plates fixed to the connecting seat; the clamping plates are alternately distributed along the width direction of the assembly platform and the upper ends of the clamping plates extend upwardly out of the connecting seat; the lower part of the truck door can be inserted between two adjacent clamping plates; The U-shaped block is fixed on the upper end surface of the assembly table and is on the same side as the second guardrail and is located outside the second guardrail; the notch of the U-shaped block faces upward and the channel extends along the length direction of the assembly table; the lower part of the truck door can be inserted into the notch of the U-shaped block.

2. The batch disassembly and assembly device for lower side doors of railway freight cars according to claim 1, characterized in that: A lifting assembly is installed on the machine base and the lifting assembly can drive the assembly platform to move up and down in a vertical direction relative to the machine base.

3. The batch disassembly and assembly device for lower side doors of railway freight cars according to claim 1 or 2, characterized in that: A slide assembly is arranged on the assembly platform, and the supporting portion, the blocking portion and the U-shaped block are all fixedly mounted on a slide body of the slide assembly; the slide assembly can perform linear reciprocating movement in a width direction relative to the assembly platform.

4. The batch disassembly and assembly device for lower side doors of railway freight cars according to claim 3, characterized in that: It also includes a blocking rod; two vertical poles are fixedly provided on one side of the assembly table where the barrier 1 is provided, and the two vertical poles are respectively placed against the side rail and the fence; one end of the blocking rod is pivotally matched with the upper end of one vertical pole, and the other end is matched with a bayonet fixed on the upper part of the other vertical pole; when the blocking rod rotates in a vertical plane, it can be inserted into the bayonet from above to below, so that the blocking rod can be kept horizontally above the barrier 1.

5. The batch disassembly and assembly device for lower side doors of railway freight cars according to claim 1 or 2, characterized in that: A slide assembly is arranged on the assembly platform and the U-shaped block is fixedly mounted on the slide body of the slide assembly; the slide assembly can perform linear reciprocating movement in the width direction relative to the assembly platform.

6. The batch disassembly and assembly device for lower side doors of railway freight cars according to claim 5, characterized in that: It also includes a blocking rod; two vertical poles are fixedly provided on one side of the assembly table where the barrier 1 is provided, and the two vertical poles are respectively placed against the side rail and the fence; one end of the blocking rod is pivotally matched with the upper end of one vertical pole, and the other end is matched with a bayonet fixed on the upper part of the other vertical pole; when the blocking rod rotates in a vertical plane, it can be inserted into the bayonet from above to below, so that the blocking rod can be kept horizontally above the barrier 1.

7. The batch disassembly and assembly device for lower side doors of railway freight cars according to claim 1 or 2, characterized in that: It also includes a blocking rod; two vertical poles are fixedly provided on one side of the assembly table where the barrier 1 is provided, and the two vertical poles are respectively placed against the side rail and the fence; one end of the blocking rod is pivotally matched with the upper end of one vertical pole, and the other end is matched with a bayonet fixed on the upper part of the other vertical pole; when the blocking rod rotates in a vertical plane, it can be inserted into the bayonet from above to below, so that the blocking rod can be kept horizontally above the barrier 1.

8. The batch disassembly and assembly device for lower side doors of railway freight cars according to claim 1 or 2, characterized in that: A door portion is formed on the fence and bolt rods are provided on the upper parts of the vertical arms on both sides of the door portion; one end of the bolt rod is pivotally matched on one side of the vertical arm of the door portion, and the other end is matched with a bayonet fixed on the upper part of the vertical arm on the other side of the door portion; when the bolt rod rotates in a vertical plane, it can be inserted into the bayonet from above to below, so that the bolt rod can be horizontally maintained on the upper part of the door portion.

9. The batch disassembly and assembly device for lower side doors of railway freight cars according to claim 1 or 2, characterized in that: It also includes a ladder arranged in the vertical direction; the upper end of the ladder is connected to the outer wall of the assembly table, and the lower end is connected to the machine base.

10. The batch disassembly and assembly device for lower side doors of railway freight cars according to claim 1 or 2, characterized in that: A box is arranged in the fence; and at least a drawer is arranged on the box.

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