CN219309781U

CN219309781U - Detachable bending tool for processing side support piece of slip form enclosure

Info

Publication number: CN219309781U
Application number: CN202320804436.0U
Authority: CN
Inventors: 郭泽林; 左雪艳; 许凯航; 王子斌; 张方杰
Original assignee: No9 Metallurgical Construction Corp
Current assignee: No9 Metallurgical Construction Corp
Priority date: 2023-04-12
Filing date: 2023-04-12
Publication date: 2023-07-07
Anticipated expiration: 2033-04-12

Abstract

The utility model provides a slipform enclosure side support processing is with detachable frock of bending, all be equipped with the height-adjusting stabilizer blade in equipment frame bottom four corners, equipment frame front side top surface both ends are fixed with the roll slide shaft, and the vertical work piece that locates on the equipment frame front side top surface is located roll slide shaft rear side and supports and lean on the roll slide shaft, and the work piece is pressed the bending by the roof pressure device of installing in equipment frame and hydraulic oil top under the rotatory direction effect of roll slide shaft shaping, equipment frame top surface is equipped with the roof pressure length controlling means who is used for controlling roof pressure device to work piece roof pressure size. The utility model has more stable and uniform stress in the process of bending the workpiece, controls the jacking size of the workpiece through the jacking length control device arranged at the top of the assembly frame, solves the problems of inconsistent circle centers of the bending degree of the enclosure in the same batch, inconsistent buckling deformation and length specification of the material after the bending processing of the enclosure, has convenient structure disassembly and assembly, is not limited by site processing conditions, has high turnover utilization rate, is simple and convenient to operate and has low processing cost.

Description

Detachable bending tool for processing side support piece of slip form enclosure

Technical Field

The utility model belongs to the technical field of silo sliding forms, and particularly relates to a detachable bending tool for machining a sliding form enclosure side support piece.

Background

The slip form construction is a construction method for pouring a vertical concrete structure by using a hydraulic lifting device to lift a formwork. A whole set of hydraulic slip form device comprises a template, a circle, a lifting frame, an operation platform, a supporting rod, a hydraulic jack and the like, in order to ensure the concrete pouring quality, the requirements on the processing precision in the aspects of bending, material deformation, specification and the like of a support piece on the side of the circle are provided in the slip form construction process, in the same horizontal plane, the bending degree of the support piece on the side of each section of the circle is consistent with the circle center, deformation warpage and different length cannot exist, and the press bending tool with small occupied space and high press bending precision is necessary to be designed in order to solve the problems of inconsistent circle center of the bending degree of the circle in the same batch and inconsistent material warpage deformation and length specification after the press bending processing of the circle under the environment of processing conditions of a processing plant.

Disclosure of Invention

The utility model solves the technical problems that: the utility model provides a slipform enclosure side support processing is with detachable frock of bending, adopt set up folding hydraulic workbench on the equipment frame, press the shaping with the work piece bending after locating the cooperation of the roll slide shaft at equipment frame and hydraulic workbench's top by the roof pressure device and the equipment frame front side top, whole course of working atress is more stable even, and control the work piece roof pressure size through the roof pressure length control device who locates the equipment frame top, the inconsistent problem of material warp deformation, length specification after the processing of enclosure bending of same batch has been solved, the structure easy dismounting is not restricted by on-the-spot processing condition, the turnover rate of utilization is high, easy and simple to handle, low in processing cost.

The utility model adopts the technical scheme that: the utility model provides a slipform encloses circle side support processing with detachable frock of bending, is including detachable equipment frame as an organic whole of connection, equipment frame bottom four corners all is equipped with the height-adjusting stabilizer blade, equipment frame front side top surface both ends are fixed with the roll slide shaft of spacing function, and vertically locate the work piece on the equipment frame front side top surface and lie in roll slide shaft rear side and support and lean on the roll slide shaft, collapsible hydraulic table is installed to equipment frame top surface rear side, and the work piece is pressed the bending by the roof pressure device of installing in equipment frame and hydraulic oil top under the rotatory direction effect of roll slide shaft shaping, the equipment frame top surface is equipped with the roof pressure length control device that is used for controlling roof pressure device to the work piece roof pressure size.

The hydraulic oil jacking device comprises a hydraulic oil jacking device, a solid compression bar and a pressure head, wherein the hydraulic oil jacking device is arranged on a hydraulic workbench, the end part of a piston rod of the hydraulic oil jacking device is fixedly connected with the rear end of the solid compression bar arranged at the top of the assembly frame, the pressure head is fixed at the front end of the solid compression bar, the hydraulic oil jacking device drives the solid compression bar to move forwards to the pressure head to jack a workpiece to a preset bending size position, and the bending size of the workpiece is set through a jacking length control device.

Further, two supporting ring seats are arranged on the top surface of the assembly frame and positioned right in front of the hydraulic oil top, and the solid compression bar is in clearance fit with annular holes at the upper ends of the two supporting ring seats and axially slides along the annular holes of the supporting ring seats under the drive of the hydraulic oil top.

Further, the outer contour of pressure head is U-shaped structure, the extrados of pressure head sets up towards the work piece, and the pressure head is fixed firmly with solid depression bar front end through the fixed plate that is fixed in the U-shaped inslot.

Further, the jacking length control device comprises a comb plate, the comb plate is located below the solid compression bar and is fixed on the top surface of the assembly frame, scale marks are formed on the long-side plate surface of one side of the comb plate, a positioning plate is fixed on the long-side plate surface of the other side of the comb plate in an adjustable mode, a limiting ring located in front of the rear supporting ring seat is fixed on the solid compression bar, a limiting plate which is vertically arranged and corresponds to the positioning plate from front to back is fixed at the lower end of the limiting ring, the limiting plate and the solid compression bar synchronously move forward to be stopped after the limiting plate contacts with the positioning plate, and the bending size of a workpiece is adjusted by adjusting the distance between the positioning plate and the limiting plate.

Further, a plurality of tooth grooves are formed in the long side plate surface of the other side of the comb plate, racks matched with the tooth grooves are formed in the bottom surface of the positioning plate, and the distance between the positioning plate and the limiting plate is adjusted by adjusting the adaptive positions of the positioning plate and different tooth grooves.

Further, the rolling sliding shaft is of a structure composed of a fixed shaft vertically fixed on the top surface of the front side of the assembly frame and a rolling sleeve in clearance fit with the fixed shaft, and a limiting rod for limiting the workpiece in the press bending process is connected to the upper end of the fixed shaft in a threaded manner.

Further, the assembly frame includes horizontal lower frame, horizontal upper frame and support column, the horizontal upper frame is located the level lower frame directly over, horizontal upper frame and horizontal lower frame four corners all are equipped with the preformed hole, and be located the preformed hole adaptation of support column and the corresponding position between horizontal upper frame and the horizontal lower frame four corners and pass through the bolt interlude fixedly, adjacent the stiffening rod has been linked firmly to the bolt between the support column, hydraulic table folding installs in horizontal upper frame rear side top.

Further, two support columns of equipment frame rear side run through the preformed hole setting that the level goes up the frame rear side corresponds, hydraulic pressure workstation both sides pole front end all is fixed with the connecting plate, and the connecting plate front side is articulated with the connecting seat that the bolt fastening is in level and goes up frame rear side top surface both ends, and when rotating hydraulic pressure workstation to the horizontal position, the square hole of locating on the connecting plate face is adapted with the support column of corresponding position, hydraulic pressure workstation middle part front end passes through removable fixed connection of bolt and level go up frame rear side when hydraulic pressure workstation horizontality.

Compared with the prior art, the utility model has the advantages that:

1. according to the technical scheme, the foldable hydraulic workbench is arranged on the assembly frame, the workpiece is bent and formed after the jacking device arranged on the assembly frame and the hydraulic workbench is matched with the rolling sliding shaft at the top of the front side of the assembly frame, and compared with the traditional manual or mechanical pressing processing mode, the stress of the workpiece jacking processing process is more stable and uniform;

2. according to the technical scheme, the required bending degree of each section of material is accurately calculated, the jacking length control device arranged at the top of the assembly frame is used for controlling the jacking size of the workpiece, the consistent and controllable stress of each time of buckling in the same batch is ensured, the problems that the stress of the same stress point is inconsistent and the bending degree of the enclosure is excessive or insufficient due to the fact that the material structure is subjected to repeated pressure bearing and damage by manpower or machinery are avoided, and the bending precision and the processing quality of the workpiece are improved;

3. according to the technical scheme, the leveling support legs and the level meter are matched to level the upper end face of the assembly frame, so that the horizontal working condition environment formed by the jacking processing of the workpiece is guaranteed, the problems of deformation and warping of materials in the bending processing process of the workpiece are avoided, the disassembly and assembly are convenient, the limitation of on-site processing conditions is avoided, the turnover utilization rate is high, the operation is simple and convenient, and the processing cost is low;

4. according to the technical scheme, the jacking length control device is used for adjusting the jacking device to process the enclosure with different radians, so that cutting and welding operations are reduced, emission of harmful gases such as carbon dioxide and sulfur dioxide can be reduced, and the device has high use value.

Drawings

FIG. 1 is a schematic view of the present utility model in use;

FIG. 2 is a schematic diagram of the structure of the present utility model;

FIG. 3 is a schematic view of a part of the structure of the rear side of the hydraulic table and the assembly frame of the present utility model.

Detailed Description

The technical solutions in the embodiments of the present utility model will be clearly and completely described in the following with reference to fig. 1 to 3 in the embodiments of the present utility model, and it is obvious that the described embodiments are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation. The inclusion of an element as defined by the phrase "comprising one does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises an element.

The utility model provides a slipform enclosure side support processing is with detachable frock of bending, is shown as fig. 1-3, including detachable equipment frame 1 as an organic whole of connecting, equipment frame 1 bottom four corners all is equipped with height-adjusting stabilizer blade 2, equipment frame 1 front side top surface both ends are fixed with the roll slide shaft 4 of last limit function, and vertically locate the work piece 8 on the equipment frame 1 front side top surface and lie in roll slide shaft 4 rear side and support and lean on roll slide shaft 4, the folding hydraulic bench 3 is installed to equipment frame 1 top surface rear side, and work piece 8 is pressed the bending by the roof pressure device who installs on equipment frame 1 and hydraulic oil top 5 under roll slide shaft 4 rotation direction effect and is formed, equipment frame 1 top surface is equipped with the roof pressure length controlling means that is used for controlling roof pressure device to work piece 8 roof pressure size.

The concrete structure of the jacking device is as follows: the jacking device comprises a hydraulic oil top 5, a solid compression bar 6 and a pressure head 7, wherein the hydraulic oil top 5 is arranged on the hydraulic workbench 3, the end part of a piston rod of the hydraulic oil top 5 is fixedly connected with the rear end of the solid compression bar 6 arranged at the top of the assembly frame 1, the pressure head 7 is fixed at the front end of the solid compression bar 6, the hydraulic oil top 5 drives the solid compression bar 6 to move forwards to the pressure head 7 to jack a workpiece 8 to a preset bending size position, and the bending size of the workpiece 8 is set through a jacking length control device; specifically, the top surface of the assembly frame 1 is provided with two supporting ring seats 9 positioned right in front of the hydraulic oil top 5, and the solid compression bar 6 is in clearance fit with annular holes at the upper ends of the two supporting ring seats 9 and axially slides along the annular holes of the supporting ring seats 9 under the drive of the hydraulic oil top 5; specifically, the outer contour of the pressure head 7 is in a U-shaped structure, the outer cambered surface of the pressure head 7 faces the workpiece 8, and the pressure head 7 is fixedly connected with the front end of the solid pressure rod 6 through a fixing plate fixed in a U-shaped groove; in the structure, the foldable hydraulic workbench 3 is arranged on the assembly frame 1, the workpiece 8 is pressed and bent to be formed after the jacking devices arranged on the assembly frame 1 and the hydraulic workbench 3 are matched with the rolling sliding shaft 4 at the top of the front side of the assembly frame, and compared with the traditional manual or mechanical pressing processing mode, the stress of the workpiece jacking processing process is more stable and uniform;

the specific structure of the jacking length control device is as follows: the jacking length control device comprises a comb plate 10, wherein the comb plate 10 is positioned below a solid compression bar 6 and is fixed on the top surface of the assembly frame 1, scale marks 12 are formed on the long-side plate surface on one side of the comb plate 10, a positioning plate is fixed on the long-side plate surface on the other side of the comb plate 10 in an adjustable mode, a limiting ring 14 positioned in front of a rear supporting ring seat 9 is fixed on the solid compression bar 6, limiting plates 13 which are vertically arranged and correspond to the positioning plate in front of and behind are fixed at the lower end of the limiting ring 14, the limiting plates 13 and the solid compression bar 6 synchronously move forward until the limiting plates 13 are contacted with the positioning plate and then stop, and the bending size of a workpiece 8 is adjusted by adjusting the distance between the positioning plate and the limiting plates 13; specifically, a plurality of tooth grooves 11 are formed in the long side plate surface of the other side of the comb plate 10, racks matched with the tooth grooves 11 are formed in the bottom surface of the positioning plate, and the distance between the positioning plate and the limiting plate 13 is adjusted by adjusting the adaptive positions of the positioning plate and different tooth grooves 11; in the structure, the pressing length control device arranged at the top of the assembly frame 1 is adopted to control the pressing size of the workpiece 8 by accurately calculating the required bending degree of each section of material, so that the consistent and controllable pressing stress of each time of the same batch is ensured, the problems of inconsistent stress and excessive or out-of-place bending degree of the enclosure caused by the fact that the material structure is subjected to repeated pressing and pressing by manpower or machinery are avoided, and the bending precision and the processing quality of the workpiece are improved;

the specific structure of the rolling slide shaft 4 is as follows: the rolling sliding shaft 4 is a structure composed of a fixed shaft vertically fixed on the top surface of the front side of the assembly frame 1 and a rolling sleeve in clearance fit with the fixed shaft, and the upper end of the fixed shaft is in threaded connection with a limiting rod 15 for limiting the upper position of the workpiece 8 in the press bending process.

The specific structure of the assembly frame 1 is as follows: the assembly frame 1 comprises a horizontal lower frame 1-1, a horizontal upper frame 1-2 and supporting columns 1-3, wherein the horizontal upper frame 1-2 is positioned right above the horizontal lower frame 1-1, reserved holes are formed in four corners of the horizontal upper frame 1-2 and the horizontal lower frame 1-1, the supporting columns 1-3 positioned between the four corners of the horizontal upper frame 1-2 and the horizontal lower frame 1-1 are matched with the reserved holes in corresponding positions and are fixed through bolt insertion, reinforcing rods 1-4 are fixedly connected between adjacent supporting columns 1-3 through bolts, and the hydraulic workbench 3 is installed at the top of the rear side of the horizontal upper frame 1-2 in a folding mode.

The foldable installation structure of the hydraulic workbench 3 and the assembly frame 1 is specifically as follows: the two support columns 1-3 on the rear side of the assembly frame 1 penetrate through reserved holes corresponding to the rear side of the horizontal upper frame 1-2, connecting plates 16 are fixed at the front ends of two side rods of the hydraulic workbench 3, the front sides of the connecting plates 16 are hinged with connecting seats 17 fixed at the two ends of the top surface of the rear side of the horizontal upper frame 1-2 through bolts, when the hydraulic workbench 3 is rotated to a horizontal position, square holes on the surface of the connecting plates 16 are matched with the support columns 1-3 at corresponding positions, and when the hydraulic workbench 3 is in a horizontal state, the front ends of the middle parts of the hydraulic workbench 3 are detachably and fixedly connected with the rear side of the horizontal upper frame 1-2 through bolts.

When the tool is assembled, the support columns 1-3 positioned between the four corners of the horizontal upper frame 1-2 and the horizontal lower frame 1-1 are matched with reserved holes at corresponding positions and are fixed through bolt insertion, the reinforcing rods 1-4 are fixedly connected between the support columns 1-3 through bolt fastening to form an integral frame of the tool, the comb plate 10 provided with the scale marks 12, the rolling sliding shaft 4 and the limiting rods 15 are all installed at the reserved bolt holes at the top of the horizontal upper frame 1-2 through bolts, the limiting rings 14 are welded on the solid compression rods 6 in advance, the height-adjusting support legs 2 are vertically upwards installed at the lower ends of the structures of the support columns 1-3 through bolts, and all bolt fastening conditions are checked after the whole tool is assembled.

Before machining, the installation condition of the whole tool piece is checked again, the upper end face (namely the machining face) of the horizontal upper frame 1-2 is adjusted to be horizontal through the height adjusting support leg 2, calibration is carried out through the scale marks 12, a positioning plate (not shown in the drawing) is installed on the comb plate 10 at the position corresponding to the scale marks 12 according to the radian requirement of the machined workpiece 8, then machining work is started, a machining section of the workpiece 8 is placed between the solid compression bar 6 and the rolling sliding shaft 4, the workpiece 8 is protected through the rotary limiting rod 15, pressure is provided through the hydraulic oil top 5, the arc pressing head 7 at the front end of the solid compression bar 6 acts on the machining position of the workpiece 8 and carries out top pressing, at the moment, in order to ensure radian precision control, after the limiting plate 13 at the lower end of the limiting ring 14 is contacted with the positioning plate at the limiting position in the process of the solid compression bar 6, the piston rod of the top 5 stops extending, one-time arc point top pressing is completed, the arc point is slid to the arc point of the next position of the workpiece 8, and the arc point of the workpiece 8 is continued to be machined until the arc machining is completed after the whole-section circle bending is completed.

According to the technical scheme, the leveling support legs 2 and the level meter are matched and then level the upper end face of the assembly frame 1, so that the horizontal working condition environment formed by jacking and pressing the workpiece 8 is guaranteed, the problems of material deformation and warping in the bending and processing process of the workpiece 8 are avoided, the structure is convenient to assemble and disassemble, the structure is not limited by site processing conditions, the turnover utilization rate is high, the operation is simple and convenient, and the processing cost is low; the jacking length control device is used for adjusting the jacking device to process the enclosure with different radians, so that cutting and welding operations are reduced, emission of harmful gases such as carbon dioxide and sulfur dioxide can be reduced, and the device has higher use value.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.

Claims

1. Detachable press bending tool for processing sliding-mode enclosure side supporting piece, and is characterized in that: including detachable equipment frame (1) as an organic whole of connecting, equipment frame (1) bottom four corners all is equipped with height-adjusting stabilizer blade (2), equipment frame (1) front side top surface both ends are fixed with the roll slide shaft (4) of spacing function, and vertically locate work piece (8) on the equipment frame (1) front side top surface and lie in roll slide shaft (4) rear side and support and lean on roll slide shaft (4), folding hydraulic table (3) are installed to equipment frame (1) top surface rear side, and work piece (8) are pressed curved shaping by the roof pressure device of installing on equipment frame (1) and hydraulic oil top (5) under roll slide shaft (4) rotatory guide effect, equipment frame (1) top surface is equipped with the roof pressure length controlling means who is used for controlling roof pressure device to work piece (8) roof pressure size.

2. The detachable press bending tool for processing the sliding-mode enclosure side supporting piece according to claim 1, wherein the detachable press bending tool is characterized in that: the jacking device comprises a hydraulic oil top (5), a solid compression bar (6) and a pressure head (7), wherein the hydraulic oil top (5) is installed on a hydraulic workbench (3), the end part of a piston rod of the hydraulic oil top (5) is fixedly connected with the rear end of the solid compression bar (6) arranged at the top of the assembly frame (1), the pressure head (7) is fixed at the front end of the solid compression bar (6), the hydraulic oil top (5) drives the solid compression bar (6) to move forwards to the pressure head (7) to jack a workpiece (8) to a preset bending size position, and the bending size of the workpiece (8) is set through a jacking length control device.

3. The detachable press bending tool for processing the sliding-mode enclosure side supporting piece according to claim 2, wherein the detachable press bending tool is characterized in that: the top surface of the assembly frame (1) is provided with two supporting ring seats (9) positioned right in front of the hydraulic oil top (5), and the solid compression bar (6) is in clearance fit with annular holes at the upper ends of the two supporting ring seats (9) and axially slides along the annular holes of the supporting ring seats (9) under the driving of the hydraulic oil top (5).

4. The detachable press bending tool for machining a sliding-mode enclosure side support according to claim 3, wherein: the outer contour of the pressure head (7) is of a U-shaped structure, the outer cambered surface of the pressure head (7) faces the workpiece (8), and the pressure head (7) is fixedly connected with the front end of the solid pressure rod (6) through a fixing plate fixed in the U-shaped groove.

5. The detachable press bending tool for processing the sliding-mode enclosure side supporting piece according to claim 4, wherein the detachable press bending tool is characterized in that: the jacking length control device comprises a comb plate (10), the comb plate (10) is located below a solid compression bar (6) and is fixed on the top surface of the assembly frame (1), scale marks (12) are formed in the surface of one side of the long side of the comb plate (10), a positioning plate is fixed on the surface of the other side of the long side of the comb plate (10) in an adjustable mode, a limiting ring (14) located in front of a rear supporting ring seat (9) is fixed on the solid compression bar (6), limiting plates (13) which are vertically arranged and correspond to the positioning plate in front of and behind are fixed at the lower end of the limiting ring (14), the limiting plates (13) and the compression bar (6) synchronously move forward to the limiting plates (13) to be in contact with the positioning plates, and the bending size of a workpiece (8) is adjusted by adjusting the distance between the positioning plates and the limiting plates (13).

6. The detachable press bending tool for processing the sliding-mode enclosure side supporting piece according to claim 5, wherein the detachable press bending tool is characterized in that: a plurality of tooth grooves (11) are formed in the long-side surface of the other side of the comb plate (10), racks matched with the tooth grooves (11) are formed in the bottom surface of the positioning plate, and the distance between the positioning plate and the limiting plate (13) is adjusted by adjusting the adaptive positions of the positioning plate and different tooth grooves (11).

7. The detachable press bending tool for processing the sliding-mode enclosure side supporting piece according to claim 1, wherein the detachable press bending tool is characterized in that: the rolling sliding shaft (4) is of a structure composed of a fixed shaft vertically fixed on the top surface of the front side of the assembly frame (1) and a rolling sleeve in clearance fit with the fixed shaft, and a limiting rod (15) for limiting the workpiece (8) in the press bending process is connected to the upper end of the fixed shaft in a threaded manner.

8. The detachable press bending tool for machining a sliding form enclosure side support according to any one of claims 1 to 7, wherein: the assembly frame (1) comprises a horizontal lower frame (1-1), a horizontal upper frame (1-2) and supporting columns (1-3), wherein the horizontal upper frame (1-2) is located right above the horizontal lower frame (1-1), reserved holes are formed in four corners of the horizontal upper frame (1-2) and the horizontal lower frame (1-1), the supporting columns (1-3) located between the four corners of the horizontal upper frame (1-2) and the horizontal lower frame (1-1) are matched with the reserved holes in corresponding positions and are fixed through bolt insertion, reinforcing rods (1-4) are fixedly connected between the adjacent supporting columns (1-3) through bolts, and the hydraulic workbench (3) is installed at the top of the rear side of the horizontal upper frame (1-2) in a foldable mode.

9. The detachable press bending tool for processing the sliding-mode enclosure side supporting piece according to claim 8, wherein the detachable press bending tool is characterized in that: two support columns (1-3) on the rear side of the assembly frame (1) penetrate through reserved holes corresponding to the rear side of the horizontal upper frame (1-2), connecting plates (16) are fixed at the front ends of two side rods of the hydraulic workbench (3), the front sides of the connecting plates (16) are hinged with connecting seats (17) fixed at the two ends of the top surface on the rear side of the horizontal upper frame (1-2) through bolts, when the hydraulic workbench (3) is rotated to a horizontal position, square holes formed in the surface of the connecting plates (16) are matched with the support columns (1-3) in corresponding positions, and the front ends of the middle parts of the hydraulic workbench (3) are detachably and fixedly connected with the rear side of the horizontal upper frame (1-2) through bolts in the horizontal state of the hydraulic workbench (3).