Manual manufacturing table for stainless steel clothes hanger
By designing a handmade stainless steel clothes hanger table with multiple bending mechanisms, the problems of cumbersome and complex connection in the prior art are solved, and simple production of bends and shoulder grooves in various parts of the clothes hanger are realized, which improves production efficiency and convenience.
Patent Information
- Application Number
- CN202421471215.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-26
- Publication Date
- 2025-05-16
- Estimated Expiration
- 2034-06-26
AI Technical Summary
The existing stainless steel hanger hand-making tables are cumbersome and need to be carried out separately when making clothes hangers that require grooves on the shoulders, which increases the workload. At the same time, when connecting both ends, it is necessary to screw out the twisted steel wire heads, weld or rivet, which is complicated to operate.
A stainless steel hanger hand-made table including multiple bending mechanisms is designed. By providing a first bending mechanism, a second bending mechanism, a third bending mechanism, a fourth bending mechanism and a fifth bending mechanism, bending operations at all parts of the hanger are realized, and grooves are formed on both sides of the hanger at the same time without separate operations.
The hanger production process is simplified, the operation steps and work burden are reduced, complex operations such as twisting out the twisted steel wire head are avoided, and the production efficiency and convenience are improved.
Smart Images
Figure CN222873259U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of clothes hanger manufacturing, in particular to a stainless steel clothes hanger manual manufacturing table. Background Art
[0002] A hanger is a rack for hanging clothes. Most modern hangers are hook-type or fork-type, and clothes are usually hung on the hooks by the collar. People often need to use hangers to dry clothes. In daily life, hangers are generally made of wood, plastic, and steel.
[0003] Existing stainless steel hangers are still made by hand, so a corresponding hanger hand-making table is generally used when hand-making hangers. The existing hanger hand-making table can only be used to bend and make general hangers when in use. For some hangers that require grooves to be reserved at the shoulder position, further processing is required, which increases the workload. In addition, when connecting the two ends, the existing hanger hand-making table is generally fixed by twisting out the twisted steel wire head, welding or riveting, etc., and it is necessary to use tools to repeatedly rotate, which is cumbersome to operate, further increasing the workload. Utility Model Content
[0004] In view of the deficiencies of the prior art, the utility model provides a stainless steel clothes hanger hand-made table, which solves the problems raised in the background technology.
[0005] To achieve the above purpose, the utility model is implemented through the following technical solutions: a stainless steel clothes hanger handmade table, including a workbench, the upper surface of the workbench is symmetrically and slidingly connected with two first bending mechanisms and two second bending mechanisms in sequence, the two first bending mechanisms and the two second bending mechanisms are fixed by locking bolts, one side of the upper surface of the workbench is fixedly installed with a third bending mechanism, a fourth bending mechanism and a fifth bending mechanism in sequence, and the lower surface of the workbench is plugged with a detachable folding bracket.
[0006] Preferably, the first bending mechanism includes a first column slidably connected to the upper surface of the workbench, the first column is fixedly installed on the top of the workbench by a locking bolt, the top of the first column is fixedly connected to the first stop column and the second stop column respectively, the outer surface of the first column is sleeved with a first handle rotatably connected, and the upper surface of the first handle is fixedly connected to the third stop column matching the first stop column. When in use, the steel bar is placed between the two first bending mechanisms, and the first handle is rotated to bend the two ends of the steel bar to form the bottom shape of the hanger.
[0007] Preferably, the second bending mechanism includes a second column slidably connected to the upper surface of the workbench, the second column is fixedly mounted on the upper surface of the workbench by a locking bolt, the top of the second column is fixedly connected to a top plate, the upper surface of the top plate is fixedly connected to a plurality of fourth stop columns in sequence, the upper surface of the top plate is slidably connected to a fifth stop column and a limit block in sequence, the fifth stop column and the limit block are both fixed by a locking screw, the outer surface of the second column is sleeved with a second handle rotatably connected, the upper surface of the second handle is fixedly connected to an arc-shaped pressure block matching the fourth stop column, the outer surface of the top plate is provided with an arc groove matching the arc pressure block, the bottom of the hanger is placed between the two second bending mechanisms, and the two second handles can be rotated to bend the two oblique sides of the hanger to form a bent shoulder.
[0008] Preferably, the third bending mechanism includes a third column fixedly mounted on the upper surface of the workbench, the top of the third column is fixedly connected with an L-shaped stopper and a sixth stopper that cooperate with each other, the outer surface of the third column is sleeved with a third handle that is rotatably connected, and the upper surface of the third handle is fixedly connected with a first special-shaped block that cooperates with the L-shaped stopper. The shorter end of the hanger is placed in the third bending mechanism, and the shorter end can be bent by rotating the third handle to form a small hook shape.
[0009] Preferably, the fourth bending mechanism includes a fourth column fixedly mounted on the upper surface of the workbench, the top of the fourth column is fixedly connected to the first mounting plate, the upper surface of the first mounting plate is fixedly connected to the second special-shaped block and the seventh stop column that match each other, the outer surface of the fourth column is sleeved and rotatably connected to the fourth handle, the upper surface of the fourth handle is fixedly connected to the second mounting plate, the upper surface of the second mounting plate is fixedly connected to the eighth stop column that matches the second special-shaped block, the longer end of the hanger is placed in the fourth bending mechanism, and the longer end can be bent by rotating the fourth handle to form a hook shape.
[0010] Preferably, the fifth bending mechanism includes a supporting block symmetrically and fixedly connected to the upper surface of the workbench, an L-shaped pressure block is rotatably connected between the two supporting blocks, and a placing block matching the L-shaped pressure block is fixedly connected between the two supporting blocks, and the upper surface of the workbench is provided with an opening matching the L-shaped pressure block, and the bottom end of the L-shaped pressure block is rotatably connected to the first connecting rod, and a mounting bracket is fixedly connected to the outer surface of the mounting bracket, and a pressure rod is rotatably connected to the outer surface of the pressure rod, and a second connecting rod is fixedly connected to the outer surface of the pressure rod, and a pin shaft is rotatably connected between one end of the second connecting rod and one end of the first connecting rod, and a tension spring is fixedly connected between the pin shaft and the workbench, and one end of the small hook is clamped on the hook and placed on the fifth bending mechanism. Pressing the pressure rod downward can drive the L-shaped pressure block to rotate through the connecting rod structure, so that the small hook can be bent and pressed, thereby fixing the small hook, and then a complete hanger can be formed.
[0011] Preferably, the detachable folding bracket includes four supporting legs, a supporting rod is fixedly connected between two opposite supporting legs, the two supporting rods are rotatably connected by a rotating shaft, a socket is provided at the top of the supporting leg, and plug blocks matching the socket are fixedly connected around the lower surface of the workbench. The supporting rods are provided in two groups to facilitate the assembly and disassembly of the entire production table.
[0012] The utility model provides a stainless steel clothes hanger hand-made table, which has the following beneficial effects:
[0013] 1. The stainless steel hanger handmade table can realize the bending operations of the hanger in sequence through the first bending mechanism, the second bending mechanism, the third bending mechanism, the fourth bending mechanism and the fifth bending mechanism, and can form grooves on both sides of the hanger at the same time during the production process, without the need to operate separately and twist out the twisted steel wire head, so the operation is simpler and more convenient.
[0014] 2. The stainless steel clothes hanger handmade table has a detachable folding bracket, which can be removed and folded to facilitate transportation.
[0015] 3. The stainless steel hanger hand-made table can be adjusted according to hangers of different sizes by providing a slidable first bending mechanism and a second bending mechanism, so as to make hangers of different shoulder widths, thereby improving practicality.
[0016] 4. The stainless steel clothes hanger handmade table has a second bending mechanism, in which the fifth stop column and the limit block are both slidably connected and fixed by locking bolts when in use. Therefore, the distance to the fourth stop column can be adjusted, and then it can be adjusted according to steel bars of different thicknesses, further improving practicality. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0018] Figure 2 This is a schematic structural diagram of the utility model from another angle;
[0019] Figure 3 It is a structural schematic diagram of the workbench of the utility model;
[0020] Figure 4 It is a structural schematic diagram of the second bending mechanism of the utility model;
[0021] Figure 5 It is a schematic structural diagram of another angle of the second bending mechanism of the utility model;
[0022] Figure 6 It is a structural schematic diagram of the fifth bending mechanism of the utility model;
[0023] Figure 7 It is a structural schematic diagram of the detachable folding bracket of the utility model;
[0024] Figure 8 This is a diagram of the manufacturing process of the clothes hanger of the utility model.
[0025] In the figure, 1, workbench; 2, first bending mechanism; 21, first column; 22, first stop column; 23, second stop column; 24, first handle; 25, third stop column; 3, second bending mechanism; 31, second column; 32, top plate; 33, fourth stop column; 34, fifth stop column; 35, limit block; 36, second handle; 37, arc-shaped pressure block; 38, arc-shaped groove; 4, third bending mechanism; 41, third column; 42, L-shaped stop block; 43, sixth stop column; 44, third handle; 45, first special-shaped block; 5. Fourth bending mechanism; 51. Fourth column; 52. First mounting plate; 53. Second special-shaped block; 54. Seventh stop column; 55. Fourth handle; 56. Second mounting plate; 57. Eighth stop column; 6. Fifth bending mechanism; 61. Support block; 62. L-shaped pressure block; 63. Placement block; 64. First connecting rod; 65. Mounting frame; 66. Pressure rod; 67. Second connecting rod; 68. Pin; 69. Tension spring; 7. Removable folding bracket; 71. Support leg; 72. Support rod; 73. Socket; 74. Insert block. DETAILED DESCRIPTION
[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0027] Embodiment 1:
[0028] like Figures 1 to 8 As shown, a stainless steel clothes hanger handmade table, the upper surface of the workbench 1 is symmetrically and slidingly connected with two first bending mechanisms 2 and two second bending mechanisms 3 in sequence, the two first bending mechanisms 2 and the two second bending mechanisms 3 are fixed by locking bolts, and the third bending mechanism 4, the fourth bending mechanism 5 and the fifth bending mechanism 6 are fixedly installed on one side of the upper surface of the workbench 1 in sequence, and the lower surface of the workbench 1 is plugged with a detachable folding bracket 7.
[0029] Before use, first adjust the two first bending mechanisms 2 and the two second bending mechanisms 3 respectively according to the shoulder width of the hanger to be made, so that the distance between the two opposite first bending mechanisms 2 and the two second bending mechanisms 3 corresponds to the shoulder width of the hanger to be made, and then fix them with corresponding locking bolts, and then adjust the fifth stop column 34 and the limit block 35 in the second bending mechanism 3 according to the thickness of the steel bar used to make the hanger, so that steel bars of different thicknesses can be just stuck.
[0030] The first bending mechanism 2 includes a first column 21 slidably connected to the upper surface of the workbench 1, and the first column 21 is fixedly installed on the top of the workbench 1 by a locking bolt. The top of the first column 21 is fixedly connected with a first stop column 22 and a second stop column 23 respectively. The outer surface of the first column 21 is sleeved with a first handle 24 rotatably connected, and the upper surface of the first handle 24 is fixedly connected with a third stop column 25 that cooperates with the first stop column 22. When in use, the two ends of the steel bar are respectively placed between the first stop column 22 and the second stop column 23 on the two first bending mechanisms 2, and the left and right positions of the steel bar are adjusted according to the size of the hanger. Then, the first handles 24 on both sides are rotated at the same time. The rotation of the first handles 24 drives the third stop column 25 to rotate, and then the two ends of the steel bar can be bent with the cooperation of the first stop column 22 and the second stop column 23, thereby forming the bottom structure of the hanger.
[0031] The second bending mechanism 3 includes a second column 31 slidably connected to the upper surface of the workbench 1, the second column 31 is fixedly installed on the upper surface of the workbench 1 by means of locking bolts, the top of the second column 31 is fixedly connected to a top plate 32, the upper surface of the top plate 32 is sequentially fixedly connected to a plurality of fourth stop columns 33, the upper surface of the top plate 32 is sequentially slidably connected to a fifth stop column 34 and a limit block 35, the fifth stop column 34 and the limit block 35 are fixed by locking screws, the outer surface of the second column 31 is sleeved with a second handle 36 rotatably connected, the upper surface of the second handle 36 An arc-shaped pressing block 37 that cooperates with the fourth stop column 33 is fixedly connected to the surface, and an arc-shaped groove 38 that cooperates with the arc-shaped pressing block 37 is opened on the outer surface of the top plate 32. The two ends of the bottom of the initially formed hanger are respectively placed on the two second bending mechanisms 3, and the two ends of the steel bar are respectively located between the arc-shaped pressing block 37 and the fourth stop column 33, and the steel bar is clamped by the two adjacent fourth stop columns 33. Then, the two second handles 36 are rotated at the same time. The rotation of the second handles 36 drives the arc-shaped pressing block 37 to rotate through the arc-shaped groove 38 and bends the two ends of the steel bar, thereby forming a bending area on the shoulder of the hanger.
[0032] The third bending mechanism 4 includes a third column 41 fixedly mounted on the upper surface of the workbench 1, the top of the third column 41 is fixedly connected with an L-shaped stopper 42 and a sixth stopper 43 that cooperate with each other, the outer surface of the third column 41 is sleeved with a third handle 44 that is rotatably connected, and the upper surface of the third handle 44 is fixedly connected with a first special-shaped block 45 that cooperates with the L-shaped stopper 42. The shorter end of the hanger is placed on the third bending mechanism 4, and the shorter end is located between the L-shaped stopper 42 and the sixth stopper 43. Then the third handle 44 is rotated. The rotation of the third handle 44 drives the first special-shaped block 45 to rotate. At this time, the shorter end can be bent into a small hook shape with the cooperation of the L-shaped stopper 42 and the sixth stopper 43.
[0033] The fourth bending mechanism 5 includes a fourth column 51 fixedly mounted on the upper surface of the workbench 1, the top of the fourth column 51 is fixedly connected to the first mounting plate 52, the upper surface of the first mounting plate 52 is fixedly connected to the second special-shaped block 53 and the seventh stop column 54 that cooperate with each other, the outer surface of the fourth column 51 is sleeved with a fourth handle 55 that is rotatably connected, the upper surface of the fourth handle 55 is fixedly connected to the second mounting plate 56, and the upper surface of the second mounting plate 56 is fixedly connected to the eighth stop column 57 that cooperates with the second special-shaped block 53. The longer end of the hanger is placed on the fourth bending mechanism 5, and the longer end is located between the second special-shaped block 53 and the seventh stop column 54. Then the fourth handle 55 is rotated, and the rotation of the fourth handle 55 drives the eighth stop column 57 to rotate. At this time, the longer end can be bent into a hook shape with the cooperation of the second special-shaped block 53 and the seventh stop column 54.
[0034] The fifth bending mechanism 6 includes a support block 61 symmetrically fixedly connected to the upper surface of the workbench 1, an L-shaped pressure block 62 is rotatably connected between the two support blocks 61, a placement block 63 matched with the L-shaped pressure block 62 is fixedly connected between the two support blocks 61, an opening matched with the L-shaped pressure block 62 is opened on the upper surface of the workbench 1, the bottom end of the L-shaped pressure block 62 is rotatably connected to a first connecting rod 64, a mounting frame 65 is fixedly connected to one side of the outer surface of the workbench 1, the outer surface of the mounting frame 65 is rotatably connected to a pressure rod 66, and the outer surface of the pressure rod 66 is fixedly connected A second connecting rod 67 is connected, and a pin shaft 68 is rotatably connected between one end of the second connecting rod 67 and one end of the first connecting rod 64, and a tension spring 69 is fixedly connected between the pin shaft 68 and the workbench 1. Finally, the small hook is clamped at the bottom of the hook and the small hook is placed on the placement block 63 of the fifth bending mechanism 6, and then the pressure rod 66 is pressed downward. The pressure rod 66 is pressed downward through the first connecting rod 64 and the second connecting rod 67 to drive the top of the L-shaped pressure block 62 to rotate downward, and then the opening of the small hook can be pressed together, thereby fixing the shorter end of the hanger to the longer end, and the operation is simple and convenient.
[0035] The detachable folding bracket 7 includes four supporting legs 71, and a supporting rod 72 is fixedly connected between two opposing supporting legs 71. The two supporting rods 72 are rotatably connected via a rotating shaft. A plug hole 73 is provided at the top of the supporting leg 71, and two groups of supporting rods 72 are provided. Insert blocks 74 matching with the plug holes 73 are fixedly connected all around the lower surface of the workbench 1. When not in use, the detachable folding bracket 7 can be folded for easy transportation.
[0036] Working principle: Before use, first adjust the two first bending mechanisms 2 and the two second bending mechanisms 3 respectively according to the shoulder width of the hanger to be made, so that the distance between the two opposite first bending mechanisms 2 and the two second bending mechanisms 3 corresponds to the shoulder width of the hanger to be made, and then fix them with the corresponding locking bolts, and then adjust the fifth stop column 34 and the limit block 35 in the second bending mechanism 3 according to the thickness of the steel bar used to make the hanger, so that steel bars of different thicknesses can be just stuck.
[0037] When in use, the two ends of the steel bar are respectively placed between the first stop column 22 and the second stop column 23 on the two first bending mechanisms 2, and the left and right positions of the steel bar are adjusted according to the size of the hanger. Then, the first handles 24 on both sides are rotated at the same time. The rotation of the first handles 24 drives the third stop column 25 to rotate, and then the two ends of the steel bar can be bent with the cooperation of the first stop column 22 and the second stop column 23, thereby forming the bottom structure of the hanger.
[0038] The two ends of the bottom of the initially formed hanger are placed on the two second bending mechanisms 3 respectively, and the two ends of the steel bar are located between the arc-shaped pressing block 37 and the fourth stop column 33 respectively, and the steel bar is clamped by the two adjacent fourth stop columns 33, and then the two second handles 36 are rotated at the same time. The second handles 36 rotate to drive the arc-shaped pressing block 37 to rotate through the arc-shaped groove 38 and bend the two ends of the steel bar, thereby forming a bending area on the shoulder of the hanger.
[0039] Place the shorter end of the hanger on the third bending mechanism 4, and make the shorter end located between the L-shaped stopper 42 and the sixth stopper column 43, then rotate the third handle 44, the rotation of the third handle 44 drives the first special-shaped block 45 to rotate, at this time, with the cooperation of the L-shaped stopper 42 and the sixth stopper column 43, the shorter end can be bent into a small hook shape.
[0040] Place the longer end of the hanger on the fourth bending mechanism 5, and make the longer end located between the second special-shaped block 53 and the seventh stop column 54, then rotate the fourth handle 55, and the rotation of the fourth handle 55 drives the eighth stop column 57 to rotate. At this time, with the cooperation of the second special-shaped block 53 and the seventh stop column 54, the longer end can be bent into a hook shape.
[0041] Finally, clamp the small hook at the bottom of the hook and place the small hook on the placement block 63 of the fifth bending mechanism 6, and then press the pressure rod 66 downward. The pressure rod 66 presses down through the first connecting rod 64 and the second connecting rod 67 to drive the top of the L-shaped pressure block 62 to rotate downward, and then the opening of the small hook can be pressed together, thereby fixing the shorter end of the hanger to the longer end, which is simple and convenient to operate.
[0042] When not in use, the detachable folding bracket 7 can be folded for easy transportation.
[0043] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is defined by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims. Any figure mark in the claims should not be regarded as limiting the claims involved.
[0044] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.
Claims
1. A stainless steel clothes hanger hand-made table, comprising a workbench (1), characterized in that: The upper surface of the workbench (1) is symmetrically and slidably connected with two first bending mechanisms (2) and two second bending mechanisms (3) in sequence, the two first bending mechanisms (2) and the two second bending mechanisms (3) are fixed by locking bolts, a third bending mechanism (4), a fourth bending mechanism (5) and a fifth bending mechanism (6) are fixedly installed in sequence on one side of the upper surface of the workbench (1), and a detachable folding bracket (7) is inserted on the lower surface of the workbench (1); The first bending mechanism (2) comprises a first column (21) slidably connected to the upper surface of the workbench (1); the first column (21) is fixedly mounted on the top of the workbench (1) by means of locking bolts; the top of the first column (21) is respectively fixedly connected to a first stop column (22) and a second stop column (23); a first handle (24) is rotatably sleeved on the outer surface of the first column (21); and a third stop column (25) matching the first stop column (22) is fixedly connected to the upper surface of the first handle (24); The second bending mechanism (3) comprises a second column (31) slidably connected to the upper surface of the workbench (1), the second column (31) being fixedly mounted on the upper surface of the workbench (1) by means of locking bolts, the top end of the second column (31) being fixedly connected to a top plate (32), the upper surface of the top plate (32) being fixedly connected to a plurality of fourth stop columns (33) in sequence, the upper surface of the top plate (32) being slidably connected to a fifth stop column (34) and a limit block (35) in sequence, the fifth stop column (34) and the limit block (35) being both fixed by locking screws, the outer surface of the second column (31) being sleeved with a second handle (36) being rotatably connected, the upper surface of the second handle (36) being fixedly connected to an arc-shaped pressing block (37) matching with the fourth stop column (33), the outer surface of the top plate (32) being provided with an arc-shaped groove (38) matching with the arc-shaped pressing block (37); The third bending mechanism (4) comprises a third column (41) fixedly mounted on the upper surface of the workbench (1); the top of the third column (41) is fixedly connected with an L-shaped stopper (42) and a sixth stopper (43) that cooperate with each other; the outer surface of the third column (41) is sleeved with a third handle (44) that is rotatably connected; the upper surface of the third handle (44) is fixedly connected with a first special-shaped block (45) that cooperates with the L-shaped stopper (42); The fourth bending mechanism (5) comprises a fourth column (51) fixedly mounted on the upper surface of the workbench (1); the top of the fourth column (51) is fixedly connected to a first mounting plate (52); the upper surface of the first mounting plate (52) is fixedly connected to a second special-shaped block (53) and a seventh stop column (54) that match each other; the outer surface of the fourth column (51) is sleeved with a fourth handle (55) that is rotatably connected; the upper surface of the fourth handle (55) is fixedly connected to a second mounting plate (56); the upper surface of the second mounting plate (56) is fixedly connected to an eighth stop column (57) that matches the second special-shaped block (53); The fifth bending mechanism (6) comprises a support block (61) symmetrically fixedly connected to the upper surface of the workbench (1), an L-shaped pressure block (62) is rotatably connected between the two support blocks (61), a placement block (63) matched with the L-shaped pressure block (62) is fixedly connected between the two support blocks (61), an opening matched with the L-shaped pressure block (62) is provided on the upper surface of the workbench (1), a first connecting rod (64) is rotatably connected to the bottom end of the L-shaped pressure block (62), a mounting frame (65) is fixedly connected to one side of the outer surface of the workbench (1), a pressure rod (66) is rotatably connected to the outer surface of the mounting frame (65), a second connecting rod (67) is fixedly connected to the outer surface of the pressure rod (66), a pin shaft (68) is rotatably connected between one end of the second connecting rod (67) and one end of the first connecting rod (64), and a tension spring (69) is fixedly connected between the pin shaft (68) and the workbench (1).
2. The stainless steel clothes hanger handmade table according to claim 1, characterized in that: The detachable foldable bracket (7) comprises four supporting legs (71), a supporting rod (72) is fixedly connected between two opposing supporting legs (71), the two supporting rods (72) are rotatably connected via a rotating shaft, a plug hole (73) is provided at the top of the supporting leg (71), plug blocks (74) matching the plug hole (73) are fixedly connected around the lower surface of the workbench (1), and two groups of supporting rods (72) are provided.