CN210475028U

CN210475028U - Wire take-up device of wire drawing machine

Info

Publication number: CN210475028U
Application number: CN201921034711.5U
Authority: CN
Inventors: 葛大强
Original assignee: Zhangjiagang Tuoqiang Seiko Machinery Co Ltd
Current assignee: Zhangjiagang Tuoqiang Seiko Machinery Co Ltd
Priority date: 2019-07-04
Filing date: 2019-07-04
Publication date: 2020-05-08
Anticipated expiration: 2029-07-04

Abstract

The utility model discloses a take-up device of a wire drawing machine, which comprises a working plate, a support column, a fixed rod, a movable wheel, a brake block, a connecting bearing, a containing motor, a reduction gearbox, a PLC, a switch, a disassembling and assembling tray frame structure, an adjustable lifting frame structure, a movable conveying frame structure, a connecting shaft and a pulley, wherein the support column is welded around the lower surface of the working plate; the fixed rod is welded between the support column and the support column; the moving wheel is welded at the lower end of the support column; the brake pad bolt is arranged on the inner side of the movable wheel; the connecting bearing is embedded in the middle part of the inner part of the working plate; the motor storage bolt is arranged in the middle of the lower surface of the working plate. The utility model has the advantages that: through the setting of dismouting plate rail structure, and then when this adjustable crane structure is pegged graft in the inboard of first fishplate bar and second fishplate bar, it can fix to screw up this fixing bolt, and is convenient for change adjustable crane structure to the work of receiving the line.

Description

Wire take-up device of wire drawing machine

Technical Field

The utility model belongs to the technical field of the wire drawing machine, especially, relate to a wire drawing machine take-up.

Background

The wire drawing machine is preprocessing equipment which draws thick wires or bars to enable the diameter, roundness, internal metallographic structure, surface smoothness and straightening degree of the wires or bars to meet requirements, and generally comprises wire releasing equipment, a die box and a wire collecting device, wherein the wire collecting device is mainly used for winding drawn thin wires into coils so as to be accommodated, the conventional wire collecting device generally comprises a base and a wire collecting frame, a motor is arranged at the lower end of the base, the motor rotates to drive the base to rotate, the base rotates to drive the wire collecting frame to rotate, so that the thin wires are wound on the outer wall of a winding drum along with the rotation of the winding drum, the conventional wire collecting frame is generally composed of a plurality of steel pipes which are arranged at intervals, but the condition that the steel wires are thrown out of the wire collecting frame due to overlarge stress of the steel wires easily occurs because no protective device is arranged outside the wire collecting frame, personnel are easily injured, great potential safety hazards exist, and meanwhile, the drawing in of steel wire not convenient for, later stage need spend a large amount of manpowers and time to arrange in order, and the technical scheme that take-up adopted of the wire drawing machine that prior art is chinese patent publication No. CN201721320962.0 is: the wire winding machine comprises a base, be equipped with a plurality of gag lever posts on the side of the edge of base, and the mid-mounting of base has a rotatable tray, the middle part of tray is equipped with the take-up stand, the top of gag lever post is connected with spacing cup, spacing cup is narrow inverted circular truncated cone shape under the width, and the inboard of spacing cup is equipped with a plurality of PEFE sticks, and the bottom of spacing cup is equipped with a plurality of convex fixed blocks, the fixed block is located the outside of gag lever post, and is small, light in weight, not only can effectively avoid the wearing and tearing phenomenon of steel wire, and the advantage of the indiscriminate line of avoiding the steel.

However, the existing take-up device of the wire drawing machine also has the problems of inconvenient disassembly and assembly and replacement work, inconvenient size adjustment, suitability for different quantities of silk threads and inconvenient more uniform take-up work.

Therefore, the invention is very necessary to invent the wire take-up device of the wire drawing machine.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve is: the utility model provides a take-up device of a wire drawing machine, which aims to solve the problems that the existing take-up device of the wire drawing machine is inconvenient to disassemble and assemble and change, is inconvenient to adjust and is suitable for different silk threads and is inconvenient to take up more evenly.

In order to solve the technical problem, the utility model discloses a technical scheme be: a take-up device of a wire drawing machine comprises a working plate, support columns, fixing rods, moving wheels, brake pads, connecting bearings, a containing motor, a reduction gearbox, a PLC (programmable logic controller), a switch, a disassembling and assembling tray frame structure, an adjustable lifting frame structure, a movable conveying frame structure, a connecting shaft and pulleys, wherein the support columns are welded on the periphery of the lower surface of the working plate; the fixed rod is welded between the support column and the support column; the moving wheel is welded at the lower end of the support column; the brake pad bolt is arranged on the inner side of the movable wheel; the connecting bearing is embedded in the middle part of the inner part of the working plate; the motor accommodating bolt is arranged in the middle of the lower surface of the working plate; the reduction gearbox is arranged in the middle of the upper surface of the working plate through a bolt; the PLC bolt is arranged at the front part of the right side of the lower surface of the working plate; the switch is electrically connected to the front surface of the PLC; the dismounting disc frame structure is arranged on the reduction gearbox; the adjustable lifting frame structure is arranged on the disassembling and assembling tray frame structure; the movable conveying frame structure is arranged at the upper left part of the working plate; the connecting shaft is respectively and movably embedded at the upper end of the pulley and the lower end of the disassembling and assembling tray frame structure; the detachable tray frame structure comprises a fixed tray, a placing groove, an assembling head, a first sleeving connection plate, a second sleeving connection plate and a fixing bolt, wherein the placing groove is formed in the upper side of the inside of the fixed tray; the first sleeving connection plates are respectively welded on the left side and the right side of the upper surface of the fixed disc; the second sleeving and connecting plates are respectively welded on the front side and the rear side of the upper surface of the fixed disc; the fixing bolts are respectively in threaded connection with the inner parts of the first sleeving plate and the second sleeving plate.

Preferably, the adjustable lifting frame structure comprises a lower cross rod, a lower longitudinal rod, a telescopic rod, a sleeve pipe, an adjusting bolt, an upper cross rod and an upper longitudinal rod, wherein the lower longitudinal rod is welded at the middle parts of the front end and the rear end of the lower cross rod respectively; the lower cross rod and the lower longitudinal rod are respectively welded at the lower part of the inner wall of the telescopic rod; the sleeve pipe is sleeved at the upper end of the telescopic rod and is fixed through an adjusting bolt; the adjusting bolt is in threaded connection with the joint of the telescopic rod and the sleeve pipe; the upper longitudinal rods are respectively welded at the middle parts of the front end and the rear end of the upper transverse rod, and the upper transverse rod and the upper longitudinal rods are respectively welded at the upper end of the sleeve pipe.

Preferably, the movable conveying frame structure comprises a lower connecting edge, a connecting motor, an auxiliary bearing, a steel rod, an upper connecting edge, a screw rod, a lifting block and a traction cylinder, wherein the lower connecting edge is welded on the left side of the upper surface of the working plate; the connecting motor bolt is arranged in the middle of the left side of the lower surface of the working plate; the auxiliary bearings are respectively embedded on the right side of the upper surface of the lower connecting edge and the right side of the lower surface of the upper connecting edge; the steel rod is welded on the left side between the lower connecting edge and the upper connecting edge; the screw rod is inserted in the auxiliary bearing; the traction cylinder is welded at the front part of the lifting block.

Preferably, the first sleeve connecting plate and the second sleeve connecting plate are arc-shaped stainless steel plates respectively, and the inner threads of the first sleeve connecting plate and the second sleeve connecting plate are connected with fixing bolts.

Preferably, the inner wall of the placing groove of the fixed disc is provided with a straight anti-slip line.

Preferably, the assembly head is embedded at the upper end of the reduction gearbox and welded at the lower end of the fixed disc.

Preferably, the number of the telescopic rods and the number of the sleeve pipes are four, and the telescopic rods and the sleeve pipes are connected with each other through adjusting bolts.

Preferably, the lower cross rod and the lower longitudinal rod are assembled in a cross shape, and the upper cross rod and the upper longitudinal rod are assembled in a cross shape and are respectively arranged on the inner sides of the telescopic rod and the sleeve pipe.

Preferably, the traction cylinder is a stainless steel cylinder, and a stainless steel pulley is arranged in the traction cylinder.

Preferably, the lifting block specifically adopts a rectangular stainless steel block, the left side of the lifting block is sleeved on a steel rod, and the right side of the lifting block is in threaded connection with a screw rod.

Preferably, the lower connecting edge and the upper connecting edge are steel plate edges respectively.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses in, first fishplate bar and second fishplate bar adopt arc corrosion resistant plate respectively, and inside threaded connection has fixing bolt, and then when this adjustable crane structure of inboard grafting of first fishplate bar and second fishplate bar, screw up this fixing bolt and can fix, and be convenient for change adjustable crane structure to the work of receiving the line.

2. The utility model discloses in, the standing groove inner wall of fixed disk on be provided with a word antiskid line, be convenient for cooperate this adjustable crane structure to install, increased fixed effect simultaneously thereupon.

3. The utility model discloses in, the equipment head inlay in the upper end of reducing gear box, the equipment head welding at the lower extreme of fixed disk, more rationally install to drive rotatory work thereupon.

4. The utility model discloses in, telescopic link and bell and spigot joint pipe be provided with four respectively, simultaneously through adjusting bolt interconnect, and then when pulling this telescopic link, can cooperate the bell and spigot joint pipe to reach different length thereupon, and the silk thread of being convenient for to twine the equidimension carries out the work of receiving the line.

5. The utility model discloses in, sheer pole and lower vertical pole equipment be the cross, last horizontal pole and last vertical pole equipment be the cross to set up respectively in the inboard of telescopic link and cup joint pipe, and then increased fastening nature, and what fasten more installs.

6. The utility model discloses in, pull a section of thick bamboo and specifically adopt a stainless steel section of thick bamboo, pull a section of thick bamboo inside and be provided with the stainless steel pulley, and then when the silk thread passes and pulls a section of thick bamboo and pull, more reasonable supplementary work of pulling the transport.

7. The utility model discloses in, the elevator specifically adopt rectangle stainless steel piece, elevator left side cup joint on the steel pole, right side threaded connection is on the screw rod, and then after starting this connection motor, can make the screw rod rotatory thereupon to drive and pull a elevator and go up and down, and more even messenger's silk thread carries out winding work.

8. The utility model discloses in, lower connection limit and last connection limit adopt the steel sheet limit respectively, more reasonable welding, the work of equipment.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural view of the tray rack assembly and disassembly structure of the present invention.

Figure 3 is the structure schematic diagram of the adjustable crane structure of the utility model.

Fig. 4 is a schematic structural view of the movable carriage structure of the present invention.

Fig. 5 is a schematic structural diagram of the electric appliance wiring of the present invention.

In fig. 1 to 5:

1. a working plate; 2. a support pillar; 3. fixing the rod; 4. a moving wheel; 5. a brake pad; 6. connecting a bearing; 7. a storage motor; 8. a reduction gearbox; 9. a PLC; 10. a switch; 11. disassembling and assembling the tray frame structure; 111. fixing the disc; 112. a placement groove; 113. assembling the head; 114. a first socket plate; 115. a second socket plate; 116. fixing the bolt; 12. the structure of the lifting frame can be adjusted; 121. a lower cross bar; 122. a lower longitudinal bar; 123. a telescopic rod; 124. sleeving a pipe; 125. adjusting the bolt; 126. an upper cross bar; 127. an upper longitudinal rod; 13. a movable carriage structure; 131. a lower connecting edge; 132. connecting a motor; 133. an auxiliary bearing; 134. a steel rod; 135. an upper connecting edge; 136. a screw; 137. a lifting block; 138. a traction drum; 14. a connecting shaft; 15. a pulley.

Detailed Description

The invention is further described below with reference to the accompanying drawings:

as shown in the attached drawings 1 and 2, the wire take-up device of the wire drawing machine comprises a working plate 1, a supporting column 2, a fixing rod 3, a moving wheel 4, a brake pad 5, a connecting bearing 6, a containing motor 7, a reduction gearbox 8, a PLC9, a switch 10, a disassembling and assembling plate frame structure 11, an adjustable lifting frame structure 12, a movable conveying frame structure 13, a connecting shaft 14 and a pulley 15, wherein the supporting column 2 is welded on the periphery of the lower surface of the working plate 1; the fixed rod 3 is welded between the support column 2 and the support column 2; the moving wheel 4 is welded at the lower end of the support column 2; the brake block 5 is arranged on the inner side of the movable wheel 4 through bolts; the connecting bearing 6 is embedded in the middle part of the inner part of the working plate 1; the accommodating motor 7 is mounted in the middle of the lower surface of the working plate 1 through bolts; the reduction gearbox 8 is arranged in the middle of the upper surface of the working plate 1 through bolts; the PLC9 bolt is arranged at the front part of the right side of the lower surface of the working plate 1; the switch 10 is electrically connected to the front surface of the PLC 9; the dismounting disc frame structure 11 is arranged on the reduction gearbox 8; the adjustable lifting frame structure 12 is arranged on the disassembling and assembling tray frame structure 11; the movable conveying frame structure 13 is arranged at the upper left part of the working plate 1; the connecting shaft 14 is respectively and movably embedded at the upper end of the pulley 15 and the lower end of the disassembling and assembling tray frame structure 11; the detachable tray frame structure 11 comprises a fixed disc 111, a placing groove 112, an assembling head 113, a first splicing plate 114, a second splicing plate 115 and a fixing bolt 116, wherein the inner wall of the placing groove 112 of the fixed disc 111 is provided with straight anti-skid lines, so that the detachable tray frame structure can be conveniently assembled with the adjustable lifting frame structure 12, and meanwhile, the fixing effect is increased; the placing groove 112 is arranged at the upper side in the fixed tray 111; the first sleeving connection plates 114 are respectively welded at the left side and the right side of the upper surface of the fixed disc 111; the assembling head 113 is embedded at the upper end of the reduction gearbox 8, and the assembling head 113 is welded at the lower end of the fixed disc 111, so that the assembling head can be more reasonably installed and can rotate along with the fixed disc; the first sleeving connection plate 114 and the second sleeving connection plate 115 are respectively made of arc-shaped stainless steel plates, and are internally connected with fixing bolts 116 in a threaded manner, so that when the adjustable lifting frame structure 12 is inserted and connected to the inner sides of the first sleeving connection plate 114 and the second sleeving connection plate 115, the fixing bolts 116 can be screwed down to fix the adjustable lifting frame structure 12, and the adjustable lifting frame structure 12 is convenient to replace and take up; the second sleeving and connecting plates 115 are respectively welded at the front side and the rear side of the upper surface of the fixed disc 111; the fixing bolt 116 is screwed inside the first socket plate 114 and the second socket plate 115, respectively.

As shown in fig. 3, in the above embodiment, specifically, the adjustable crane structure 12 includes a lower cross bar 121, a lower longitudinal bar 122, an expansion bar 123, a sleeve 124, an adjusting bolt 125, an upper cross bar 126 and an upper longitudinal bar 127, the lower cross bar 121 and the lower longitudinal bar 122 are assembled into a cross shape, the upper cross bar 126 and the upper longitudinal bar 127 are assembled into a cross shape and are respectively disposed at the inner sides of the expansion bar 123 and the sleeve 124, so as to increase the fastening performance and perform the installation more firmly; the lower longitudinal rods 122 are respectively welded at the middle parts of the front and rear ends of the lower transverse rod 121; the lower cross rod 121 and the lower longitudinal rod 122 are respectively welded on the lower part of the inner wall of the telescopic rod 123; the four telescopic rods 123 and the four sleeve pipes 124 are respectively arranged and are connected with each other through the adjusting bolts 125, so that when the telescopic rods 123 are pulled, the sleeve pipes 124 can be matched to reach different lengths, and the winding operation of winding silk threads with different quantities is facilitated; the sleeve pipe 124 is sleeved at the upper end of the telescopic rod 123 and is fixed through an adjusting bolt 125; the adjusting bolt 125 is in threaded connection with the connection position of the telescopic rod 123 and the sleeve pipe 124; the upper longitudinal bars 127 are respectively welded at the middle parts of the front and rear ends of the upper transverse bar 126, and the upper transverse bar 126 and the upper longitudinal bars 127 are respectively welded at the upper end of the sleeve pipe 124.

As shown in fig. 4, in the above embodiment, in particular, the movable carriage structure 13 includes a lower connecting edge 131, a connecting motor 132, an auxiliary bearing 133, a steel rod 134, an upper connecting edge 135, a screw 136, a lifting block 137 and a traction cylinder 138, wherein the lower connecting edge 131 is welded to the left side of the upper surface of the working plate 1; the lower connecting edge 131 and the upper connecting edge 135 are respectively made of steel plate edges, so that welding and assembling work can be more reasonably carried out; the connecting motor 132 is installed in the middle of the left side of the lower surface of the working plate 1 through a bolt; the auxiliary bearings 133 are respectively embedded on the right side of the upper surface of the lower connecting edge 131 and the right side of the lower surface of the upper connecting edge 135; the steel rod 134 is welded at the left side between the lower connecting edge 131 and the upper connecting edge 135; the screw 136 is inserted into the auxiliary bearing 133; the lifting block 137 is a rectangular stainless steel block, the left side of the lifting block 137 is sleeved on the steel rod 134, the right side of the lifting block 137 is in threaded connection with the screw rod 136, and then after the connecting motor 132 is started, the screw rod 136 can be rotated along with the lifting block 137, the cylinder 138 is driven and pulled to lift, and silk threads can be wound more uniformly; the traction cylinder 138 is welded at the front part of the lifting block 137; the traction cylinder 138 is a stainless steel cylinder, and a stainless steel pulley is arranged inside the traction cylinder 138, so that when the silk threads pass through the traction cylinder 138 to be dragged, the work of traction and conveying is more reasonably assisted.

In the above embodiment, specifically, the accommodating motor 7 is a motor with a model number YS 8024.

In the above embodiment, specifically, the connection motor 132 is a motor with a model number YS 8024.

In the above embodiment, specifically, the PLC9 is a PLC of model FX 2N-48.

In the above embodiment, specifically, the switch 10 is electrically connected to an input terminal of the PLC9, the connection motor 132 is electrically connected to an output terminal of the PLC9, and the storage motor 7 is electrically connected to an output terminal of the PLC 9.

Principle of operation

The utility model discloses a theory of operation: before using, move socket pipe 124 up and down earlier and reach suitable length with telescopic link 123, then the adjusting bolt 125 is screwed up to the quality and fix, after tentatively fixing, insert telescopic link 123 in standing groove 112, be in the inboard of first socket plate 114 and second socket plate 115 simultaneously, it fixes to screw up fixing bolt 116 at last, after installing, pull the silk thread and pass and pull a section of thick bamboo 138 and twine the round on socket pipe 124 and telescopic link 123, after tentatively installing, start and accomodate motor 7 and drive fixed disk 111 through reducing gear box 8, telescopic link 123 and socket pipe 124 are rotatory, can twine the silk thread on telescopic link 123 and socket pipe 124, in work, start connection motor 132 and make screw rod 136 rotatory, can drive elevator 137 and pull a section of thick bamboo 138 oscilaltion thereupon simultaneously, can guarantee like this that the silk thread more evenly carries out winding work.

Utilize technical scheme, or technical personnel in the field are in the utility model discloses under technical scheme's the inspiration, design similar technical scheme, and reach above-mentioned technological effect, all fall into the utility model discloses a protection scope.

Claims

1. The take-up device of the wire drawing machine is characterized by comprising a working plate (1), a support column (2), a fixing rod (3), a moving wheel (4), a brake block (5), a connecting bearing (6), a containing motor (7), a reduction gearbox (8), a PLC (9), a switch (10), a disassembling and assembling tray frame structure (11), an adjustable lifting frame structure (12), a movable conveying frame structure (13), a connecting shaft (14) and a pulley (15), wherein the support column (2) is welded around the lower surface of the working plate (1); the fixing rod (3) is welded between the support column (2) and the support column (2); the moving wheel (4) is welded at the lower end of the support column (2); the brake block (5) is arranged on the inner side of the movable wheel (4) through bolts; the connecting bearing (6) is embedded in the middle part of the inner part of the working plate (1); the accommodating motor (7) is arranged in the middle of the lower surface of the working plate (1) through bolts; the reduction gearbox (8) is arranged in the middle of the upper surface of the working plate (1) through bolts; the PLC (9) is arranged on the front part of the right side of the lower surface of the working plate (1) through a bolt; the switch (10) is electrically connected to the front surface of the PLC (9); the dismounting disc frame structure (11) is arranged on the reduction gearbox (8); the adjustable lifting frame structure (12) is arranged on the disassembling and assembling tray frame structure (11); the movable conveying frame structure (13) is arranged at the upper left part of the working plate (1); the connecting shaft (14) is respectively and movably embedded at the upper end of the pulley (15) and the lower end of the disassembling and assembling tray frame structure (11); the detachable tray frame structure (11) comprises a fixed tray (111), a placing groove (112), an assembling head (113), a first sleeving plate (114), a second sleeving plate (115) and a fixing bolt (116), wherein the placing groove (112) is formed in the upper side of the inside of the fixed tray (111); the first sleeving connection plates (114) are respectively welded on the left side and the right side of the upper surface of the fixed disc (111); the second sleeving and connecting plates (115) are respectively welded on the front side and the rear side of the upper surface of the fixed disc (111); the fixing bolt (116) is respectively in threaded connection with the inner parts of the first sleeving connection plate (114) and the second sleeving connection plate (115).

2. The take-up device of the wire drawing machine as claimed in claim 1, wherein the adjustable lifting frame structure (12) comprises a lower cross bar (121), a lower longitudinal bar (122), a telescopic bar (123), a sleeve pipe (124), an adjusting bolt (125), an upper cross bar (126) and an upper longitudinal bar (127), wherein the lower longitudinal bar (122) is respectively welded at the middle parts of the front end and the rear end of the lower cross bar (121); the lower cross rod (121) and the lower longitudinal rod (122) are respectively welded at the lower part of the inner wall of the telescopic rod (123); the sleeve pipe (124) is sleeved at the upper end of the telescopic rod (123) and is fixed through an adjusting bolt (125); the adjusting bolt (125) is in threaded connection with the connecting position of the telescopic rod (123) and the sleeve pipe (124); the upper longitudinal rods (127) are respectively welded at the middle parts of the front end and the rear end of the upper transverse rod (126), and the upper transverse rod (126) and the upper longitudinal rods (127) are respectively welded at the upper end of the sleeve pipe (124).

3. A wire take-up device for a wire drawing machine according to claim 1, characterised in that said movable carriage structure (13) comprises a lower connecting edge (131), a connecting motor (132), an auxiliary bearing (133), a steel rod (134), an upper connecting edge (135), a screw (136), a lifting block (137) and a traction drum (138), said lower connecting edge (131) being welded to the left of the upper surface of the work plate (1); the connecting motor (132) is arranged in the middle of the left side of the lower surface of the working plate (1) through a bolt; the auxiliary bearing (133) is respectively embedded on the right side of the upper surface of the lower connecting edge (131) and the right side of the lower surface of the upper connecting edge (135); the steel rod (134) is welded on the left side between the lower connecting edge (131) and the upper connecting edge (135); the screw rod (136) is inserted in the auxiliary bearing (133); the traction cylinder (138) is welded at the front part of the lifting block (137).

4. A take-up device for a wire drawing machine as claimed in claim 1, characterised in that said first and second sleeving plates (114, 115) are made of arc-shaped stainless steel plates respectively, and have fixing bolts (116) screwed therein.

5. A wire take-up device of a wire drawing machine as claimed in claim 1, characterized in that the inner wall of the placing groove (112) of the fixed disc (111) is provided with a straight anti-slip thread.

6. A take-up device of a wire drawing machine as claimed in claim 1, characterized in that said assembling head (113) is embedded in the upper end of the reduction box (8), said assembling head (113) is welded at the lower end of the fixed disc (111).

7. A take-up device for wire-drawing machines according to claim 2, characterised in that said telescopic rods (123) and said bell-and-spigot pipes (124) are respectively provided in four numbers and are simultaneously interconnected by means of adjusting bolts (125).

8. A wire take-up unit for wire drawing machines according to claim 2, characterized in that said lower cross bar (121) and lower longitudinal bar (122) are assembled in a cross shape, and said upper cross bar (126) and upper longitudinal bar (127) are assembled in a cross shape and are arranged inside the telescopic bar (123) and the bell and spigot (124), respectively.

9. A take-up device for a wire drawing machine as claimed in claim 3, characterized in that said traction cylinder (138) is a stainless steel cylinder, and said traction cylinder (138) is internally provided with a stainless steel pulley.

10. A take-up device of a wire drawing machine as claimed in claim 3, characterized in that said lifting block (137) is a rectangular stainless steel block, the left side of said lifting block (137) is sleeved on the steel rod (134), and the right side is threaded on the screw (136).