A desktop deburring device for furniture production

Abstract

The present application relates to a kind of furniture production desktop deburring device, the present application relates to the technical field of furniture.The present application includes table and deburring cutter, both sides of deburring cutter are provided with connecting block, two groups of connecting mechanisms and two groups of adjusting mechanisms are provided between deburring cutter and two connecting blocks, each adjusting mechanism includes third spring, screw rod and mounting block, third spring is fixedly connected to the lower end of connecting block, mounting block is arranged at the lower end of third spring, screw rod is arranged above connecting block, and the lower end of screw rod is screwed through the lower end of connecting block and is in contact with the upper end of mounting block;Two mounting blocks are connected with deburring cutter by connecting mechanism, adjusting mechanism and deburring cutter cooperate, can be adjusted according to the inclination of desktop, the inclination angle of deburring cutter, so that deburring cutter is more fitted to desktop, and back and forth movement of deburring cutter can be more conveniently removed burr.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of furniture, and in particular to a desktop deburring device for furniture production. BACKGROUND

[0002] Furniture refers to the category of appliances and facilities necessary for human beings to maintain normal life, engage in production practice and carry out social activities. Furniture has also followed the pace of the times and continuously developed and innovated, and now there are many categories, different materials, complete varieties and different purposes. It is an important basis for establishing work and living space.

[0003] Some furniture has burrs on the desktop after production, and the existence of burrs can cause damage to the human body in use, so the burrs on the desktop need to be removed. The existing burr removal device has poor fitting effect with the desktop when encountering an inclined desktop, which affects the burr removal effect. SUMMARY

[0004] In view of the deficiencies in the prior art, the present application aims to provide a desktop deburring device for furniture production, which has a desktop with different inclination angles and better burr removal effect.

[0005] The above technical purpose of the present application is achieved by the following technical scheme:

[0006] A desktop deburring device for furniture production, comprising a table and a deburring knife, two sides of the deburring knife are provided with connecting blocks, two groups of connecting mechanisms and two groups of adjusting mechanisms are arranged between the deburring knife and the two connecting blocks, each group of adjusting mechanisms comprises a third spring, a screw rod and a mounting block, the third spring is fixedly connected to the lower end of the connecting block, the mounting block is arranged at the lower end of the third spring, the screw rod is arranged above the connecting block, and the lower end of the screw rod is threaded through the lower end of the connecting block and in contact with the upper end of the mounting block; the two mounting blocks are connected with the deburring knife through the connecting mechanisms.

[0007] By adopting the above technical scheme, the adjusting mechanism and the deburring knife cooperate, the inclination angle of the deburring knife can be adjusted according to the inclination of the desktop, so that the deburring knife is more fitted to the desktop, and the back-and-forth movement of the deburring knife can more conveniently remove the burrs.

[0008] In a preferred example, each group of connecting mechanisms comprises a mounting groove, a second spring, a T-shaped groove and a T-shaped block, the mounting groove is opened in the upper end of the deburring knife, the second spring is fixedly connected to the inner bottom wall of the mounting groove, and the upper end of the second spring is fixed with the lower end of the mounting block, the T-shaped groove is opened in one side of the mounting block, the T-shaped block is slidingly connected in the T-shaped groove, and the T-shaped block and the third spring are fixed.

[0009] By adopting the technical scheme, the connecting mechanism and the adjusting mechanism cooperate to facilitate the fixation of the connecting block and the deburring tool and facilitate the movement of the deburring tool.

[0010] In a preferred example, the table is further configured as follows: L-shaped blocks are arranged at the lower ends of the four corners of the table, clamping plates are arranged on the upper sides of the four L-shaped blocks, one side of two of the L-shaped blocks is fixedly connected with first springs, the other side of the two first springs is fixedly connected with sliding platforms, the other side of the two sliding platforms is fixedly connected with traction ropes, one side of the other two L-shaped blocks is fixedly connected with mounting plates, the side away from the mounting plates of the two mounting plates is provided with a winding drum, and one side of the two traction ropes is movably penetrated through one side of the two L-shaped blocks and fixedly connected with the circumferential side of the winding drum.

[0011] By adopting the technical scheme, the winding drum and the first spring cooperate, the winding drum rotates, the traction rope pulls the sliding platform to move, the first spring is in a stretched state, and the first spring and the winding drum cooperate to enable the sliding platform to reciprocate.

[0012] In a preferred example, the table is further configured as follows: clamping mechanisms are arranged between the two connecting blocks and the two sliding platforms, each set of the clamping mechanisms includes two spring grooves, two fourth springs, two clamping blocks, an insertion block, an insertion groove, and multiple clamping grooves, the insertion groove is opened at the upper end of the sliding platform, the insertion block is fixedly connected to the lower end of the connecting block and is slidably connected to the insertion groove, the two spring grooves are respectively opened at the two sides of the insertion block, the two fourth springs are respectively fixedly connected to the inner walls of the two spring grooves, the two clamping blocks are respectively fixedly connected to the sides away from each other of the two fourth springs, the multiple clamping grooves are respectively opened at the two sides of the sliding platform, and the two clamping blocks are respectively inserted into two of the clamping grooves.

[0013] By adopting the technical scheme, the clamping mechanism cooperates with the sliding platform and the connecting block to enable the sliding platform and the connecting block to be fixed, facilitating the installation and disassembly of the deburring tool.

[0014] In a preferred example, the table is further configured as follows: telescopic rods are arranged in the two fourth springs, and the two telescopic rods are respectively fixedly connected between the two clamping blocks and the two spring grooves.

[0015] By adopting the technical scheme, the telescopic rods can prevent the fourth springs from being compressed or bent when they are elastically returned.

[0016] The application can be further configured in a preferred example that: the adjusting mechanism is arranged between the four L-shaped blocks and the four clamping plates, each set of the adjusting mechanism comprises two circular grooves and two fifth springs, the two circular grooves are arranged on the upper end of the L-shaped block, the two fifth springs are fixedly connected to the inner bottom wall of the two circular grooves, and the upper end of the two fifth springs is fixed with the clamping plate.

[0017] By adopting the above technical scheme, the adjusting mechanism and the clamping plate cooperate to better match the desktop height and better fix the L-shaped block and the clamping plate.

[0018] The application can be further configured in a preferred example that: two limiting rods are arranged on one side of the two L-shaped blocks on the same side in the longitudinal direction, one side of the two limiting rods is movably penetrated through the other two L-shaped blocks, and the two sliding platforms are slidingly connected to the circumferential side of the four limiting rods.

[0019] By adopting the above technical scheme, the sliding platform and the limiting rod slidingly cooperate to improve the movement stability of the sliding platform.

[0020] The application can be further configured in a preferred example that: the circumferential side of the four limiting rods is provided with a threaded groove, and the circumferential side of the four threaded grooves is threadedly connected with a nut.

[0021] By adopting the above technical scheme, the threaded groove and the nut cooperate to make the limiting rod more conform to the width of the desktop, and limit the position of the sliding platform.

[0022] The application can be further configured in a preferred example that: the two mounting plates are provided with a connecting barrel on the side close to each other, the other side of the two connecting barrels is movably penetrated through the side of the two mounting plates, and the two connecting barrels are fixed with the two winding barrels, respectively, and the connecting rod is threadedly connected in the two connecting barrels, and the circumferential side of the connecting rod is fixedly connected with a rotating hand wheel.

[0023] By adopting the above technical scheme, the connecting rod and the rotating hand wheel cooperate to make the rotating rotating hand wheel drive the two winding barrels to rotate simultaneously.

[0024] In summary, the application has at least one of the following beneficial technical effects:

[0025] 1. The deburring knife and the adjusting mechanism are arranged, the screw rod is rotated, the screw rod pushes the mounting block and simultaneously pushes the deburring knife, so that the inclination angle of the deburring knife can be adjusted according to the inclination of the desktop, the deburring knife is more fitted to the desktop, and the back-and-forth movement of the deburring knife can more conveniently remove burrs.

[0026] 2. Set up with connecting mechanism and connecting block, pull the installation block, the second spring is in the state of stretching, insert the T-shaped block into the T-shaped slot, can make the third spring and the installation block and the deburring tool fixed, more convenient to install and disassemble the deburring tool.

[0027] 3. Set up with the first spring, the traction rope and the winding drum, the winding drum rotates the traction rope which is gradually wrapped around the circumferential side of the winding drum, the traction rope pulls the sliding platform to move, the first spring is in the state of stretching, loosen the winding drum, the first spring drives the sliding platform back to the original position due to its own elastic recovery, so that the deburring tool does not need to be pulled back and forth by hand to move the deburring tool.

[0028] 4. Set up with the clamping mechanism, insert the plug block into the slot, the two clamping blocks are compressed to the spring slot by the inner wall of the slot, the fourth spring is in the state of compression, when the clamping block reaches the slot of the clamping slot, the force acting on the clamping block disappears, the fourth spring pushes the clamping block back to the original position due to its own elastic recovery, at this time the clamping block and the clamping slot are clamped, the sliding platform and the connecting block are fixed, the device is convenient for the installation of the sliding platform and the deburring tool.

[0029] 5. Set up with the adjusting mechanism and the clamping plate, pull the clamping plate to the top of the table, the fifth spring is in the state of stretching, loosen the clamping plate, the fifth spring makes the clamping plate clamped on the table surface, which can make the L-shaped block and the clamping plate better match the height of the table surface and be better fixed. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 is the first perspective view of the embodiment;

[0031] Figure 2 is the first perspective view of the embodiment;

[0032] Figure 3 is the first perspective view of the embodiment; Figure 2 is the enlarged view of A in the embodiment;

[0033] Figure 4 is the second perspective view of the embodiment;

[0034] Figure 5 is the second perspective view of the embodiment; Figure 4 is the enlarged view of B in the embodiment;

[0035] Figure 6 is the third perspective view of the embodiment;

[0036] Figure 7 is the third perspective view of the embodiment; Figure 6 is the enlarged view of C in the embodiment.

[0037] In the drawings: 1, table; 2, deburring knife; 3, sliding platform; 4, connecting block; 5, L-shaped block; 6, clamping plate; 7, limiting rod; 8, first spring; 9, winding drum; 10, connecting rod; 11, rotating hand wheel; 12, connecting mechanism; 1201, mounting groove; 1202, second spring; 1203, T-shaped groove; 1204, T-shaped block; 13, adjusting mechanism; 1301, third spring; 1302, screw rod; 1303, mounting block; 14, traction rope; 15, threaded groove; 16, nut; 17, clamping mechanism; 1701, spring groove; 1702, telescopic rod; 1703, fourth spring; 1704, clamping block; 1705, insertion block; 1706, insertion groove; 1707, clamping groove; 18, adjusting mechanism; 1801, circular groove; 1802, fifth spring; 19, connecting cylinder; 20, mounting plate. DETAILED DESCRIPTION

[0038] The application will be further described below in conjunction with the drawings.

[0039] Embodiment:

[0040] Reference Figures 1-7The utility model discloses a table top deburring device for furniture production, including table 1 and deburring knife 2, both sides of deburring knife 2 are provided with connecting block 4, and two groups of connecting mechanisms 12 and two groups of adjusting mechanisms 13 are arranged between deburring knife 2 and two connecting blocks 4, adjusting mechanism 13 includes third spring 1301, screw rod 1302 and mounting block 1303, third spring 1301 is fixedly connected to the lower end of connecting block 4, mounting block 1303 is arranged at the lower end of third spring 1301, screw rod 1302 is arranged above connecting block 4, and the lower end of screw rod 1302 is screwed through the lower end of connecting block 4 and is in contact with the upper end of mounting block 1303, two mounting blocks 1303 are connected with deburring knife 2 through connecting mechanism 12, and each connecting mechanism 12 includes mounting groove 1201, second spring 1202, T groove 1203 and T block 1204, mounting groove 1201 is opened in the upper end of deburring knife 2, second spring 1202 is fixedly connected to the inner bottom wall of mounting groove 1201, and the upper end of second spring 1202 is fixed with the lower end of mounting block 1303, T groove 1203 is opened in one side of mounting block 1303, T block 1204 is slidably connected in T groove 1203, and T block 1204 and third spring 1301 are fixed, pulling mounting block 1303, second spring 1202 is in the tensile state, inserts T block 1204 into T groove 1203, can make third spring 1301 and mounting block 1303 with deburring knife 2 fixed, rotates screw rod 1302, and screw rod 1302 pushes mounting block 1303 and deburring knife 2 simultaneously, so that the inclination angle of deburring knife 2 can be adjusted according to the inclination of table top, so that deburring knife 2 is more fitted to table top, first spring 8 and winding drum 9 cooperate to make that sliding platform 3 can reciprocating motion, to drive deburring knife 2 to move back and forth and carry out deburring operation, and deburring knife 2 moves back and forth can remove burr more conveniently, and the disassembly of deburring knife 2 is facilitated, and deburring knife 2 can be replaced with cleaning, polishing and other components, and different work operations are carried out, and the use performance of the device is improved.

[0041] The lower end of the table 1 is provided with L-shaped blocks 5 at four corners, the upper side of the four L-shaped blocks 5 is provided with clamping plates 6, one side of two L-shaped blocks 5 is fixedly connected with first springs 8, the other side of the two first springs 8 is fixedly connected with sliding platforms 3, the other side of the two sliding platforms 3 is fixedly connected with traction ropes 14, one side of the other two L-shaped blocks 5 is fixedly connected with mounting plates 20, the side away from each other of the two mounting plates 20 is provided with winding drums 9, one side of the two traction ropes 14 respectively movably penetrates one side of the two L-shaped blocks 5 and is fixedly connected to the circumferential side of the winding drum 9, the side of the two L-shaped blocks 5 located on the same side in the longitudinal direction is provided with two limiting rods 7, one side of the two limiting rods 7 movably penetrates the other side of the other two L-shaped blocks 5, the two sliding platforms 3 are respectively slidingly connected to the circumferential side of the four limiting rods 7, the sliding platform 3 is slidingly matched on the surface of the limiting rod 7, the moving stability of the sliding platform 3 can be improved, the winding drum 9 rotates, the traction rope 14 is gradually wrapped on the surface of the winding drum 9, the traction rope 14 pulls the sliding platform 3 to move, the first spring 8 is in a stretched state, the winding drum 9 is loosened, the first spring 8 pulls the sliding platform 3 to return to the original position due to the elastic recovery of itself, the traction rope 14 is away from the surface of the winding drum 9, the first spring 8 and the winding drum 9 cooperate to make the sliding platform 3 can reciprocatingly move, so as to drive the deburring knife 2 to move back and forth to perform deburring work.

[0042] The clamping mechanism 17 is arranged between the two connecting blocks 4 and the two sliding platforms 3, each set of the clamping mechanism 17 comprises two spring grooves 1701, two fourth springs 1703, two clamping blocks 1704, an insertion block 1705, an insertion groove 1706 and a plurality of clamping grooves 1707, the insertion groove 1706 is arranged at the upper end of the sliding platform 3, the insertion block 1705 is fixedly connected to the lower end of the connecting block 4 and is slidingly connected to the insertion groove 1706, the two spring grooves 1701 are arranged at the two sides of the insertion block 1705, the two fourth springs 1703 are fixedly connected to the inner walls of the two spring grooves 1701, respectively, the two fourth springs 1703 are provided with telescopic rods 1702, the telescopic rods 1702 are fixedly connected between the two clamping blocks 1704 and the two spring grooves 1701, the telescopic rods 1702 can prevent the fourth springs 1703 from being compressed or bent when the fourth springs 1703 are elastically recovered, the two clamping blocks 1704 are fixedly connected to the sides of the two fourth springs 1703, respectively, the plurality of clamping grooves 1707 are arranged at the two sides of the sliding platform 3, respectively, the two clamping blocks 1704 are inserted into two clamping grooves 1707, respectively, the insertion block 1705 is inserted into the insertion groove 1706, the two clamping blocks 1704 are compressed and shrunk into the spring grooves 1701 by the inner walls of the insertion groove 1706, and the fourth springs 1703 are in a compressed state. When the clamping blocks 1704 reach the notches of the clamping grooves 1707, the force acting on the clamping blocks 1704 disappears, the clamping blocks 1704 are pushed back to the original positions by the fourth springs 1703 due to the elastic recovery of the fourth springs 1703, at this time, the clamping blocks 1704 and the clamping grooves 1707 are clamped, the sliding platform 3 and the connecting block 4 are fixed, and the device facilitates the installation of the sliding platform 3 and the deburring knife 2.

[0043] The adjusting mechanism 18 is arranged between the four L-shaped blocks 5 and the four clamping plates 6, each set of the adjusting mechanism 18 comprises two circular grooves 1801 and two fifth springs 1802, the two circular grooves 1801 are arranged at the upper ends of the L-shaped blocks 5, the two fifth springs 1802 are fixedly connected to the inner bottom walls of the two circular grooves 1801, respectively, and the upper ends of the two fifth springs 1802 are fixed to the clamping plates 6, the adjusting mechanism 18 cooperates with the clamping plate 6, the clamping plate 6 is pulled to be located on the upper side of the desktop, the clamping plate 6 is loosened, the circular groove 1801 pulls the clamping plate 6 downward due to the elastic recovery of the circular groove 1801, and the clamping plate 6 is clamped at the upper end of the clamping plate 6, so that the L-shaped block 5 and the clamping plate 6 can better match the height of the desktop and be better fixed.

[0044] The circumferential side of each of the four limiting rods 7 is provided with a threaded groove 15, and the circumferential side of each of the four threaded grooves 15 is threadedly connected with a nut 16, the nut 16 is threadedly connected to the threaded groove 15, which facilitates the installation of the limiting rod 7 and makes the limiting rod 7 more conform to the width of the desktop, so that the disassembly of the limiting rod 7 makes all the parts of the device detachable.

[0045] The side close to each other of the two installation plates 20 is provided with a connecting barrel 19, a thread is formed in the connecting barrel 19, the other side of the two connecting barrels 19 is movably penetrated through the side of the two installation plates 20 respectively, and the two connecting barrels 19 are fixed with the two winding barrels 9 respectively, the connecting rod 10 is threadedly connected in the two connecting barrels 19, the circumferential side of the connecting rod 10 is fixedly connected with the rotating hand wheel 11, the connecting rod 10 is threadedly connected in the two connecting barrels 19, and rotating the rotating hand wheel 11 can drive the two winding barrels 9 to rotate simultaneously, so that the two traction ropes 14 pull the two sliding platforms 3 simultaneously.

[0046] The implementation principle of the above embodiment is that the clamping plate 6 is pulled to be located on the upper side of the desktop, the clamping plate 6 is loosened, the circular groove 1801 pulls the clamping plate 6 downward due to the elastic recovery of the circular groove 1801, the clamping plate 6 is clamped at the upper end, the limiting rod 7 is inserted into the sliding platform 3, the plug block 1705 is inserted into the plug groove 1706, the two clamping blocks 1704 are compressed and shrunk into the spring groove 1701 by the compression of the inner wall of the plug groove 1706, the fourth spring 1703 is in a compressed state, when the clamping block 1704 reaches the slot opening of the clamping groove 1707, the force acting on the clamping block 1704 disappears, the fourth spring 1703 pushes the clamping block 1704 back to the original position due to the elastic recovery of the fourth spring 1703, at this time, the clamping block 1704 and the clamping groove 1707 are clamped, the sliding platform 3 and the connecting block 4 are fixed, the installation of the sliding platform 3 and the deburring knife 2 is facilitated, the installation block 1303 is pulled, the second spring 1202 is in a stretched state, the T-shaped block 1204 is inserted into the T-shaped groove 1203, the third spring 1301 and the installation block 1303 can be fixed with the deburring knife 2, the screw rod 1302 is rotated, the screw rod 1302 pushes the installation block 1303 and the deburring knife 2 simultaneously, so that the inclination angle of the deburring knife 2 can be adjusted according to the inclination of the desktop, the deburring knife 2 is more fitted to the desktop, the back-and-forth movement of the deburring knife 2 can facilitate deburring, and the deburring knife 2 is convenient to disassemble, the device does not need to hold the deburring knife 2 for deburring, the parts of the device are convenient to disassemble, the device becomes small parts convenient to carry, the worker can carry the device conveniently, and the size of the table 1 is adjusted and installed.

[0047] The contents not described in detail in the specification belong to the prior art known by the person skilled in the art.

[0048] The embodiments of the specific implementation are the preferred embodiments of the application, and do not limit the protection scope of the application, so that: any equivalent changes made according to the structure, shape and principle of the application should be covered within the protection scope of the application.

Claims

1. A deburring device for furniture production, comprising a table (1) and a deburring tool (2), characterized in that: Both sides of the deburring tool (2) are provided with connecting blocks (4), two groups of connecting mechanisms (12) and two groups of adjusting mechanisms (13) are arranged between the deburring tool (2) and the two connecting blocks (4), each group of the adjusting mechanism (13) comprises a third spring (1301), a screw rod (1302) and a mounting block (1303), the third spring (1301) is fixedly connected to the lower end of the connecting block (4), the mounting block (1303) is arranged at the lower end of the third spring (1301), the screw rod (1302) is arranged above the connecting block (4), and the lower end of the screw rod (1302) is threaded through the lower end of the connecting block (4) and is in contact with the upper end of the mounting block (1303); the two mounting blocks (1303) are connected with the deburring tool (2) through the connecting mechanism (12); Each group of the connecting mechanism (12) comprises a mounting groove (1201), a second spring (1202), a T-shaped groove (1203) and a T-shaped block (1204), the mounting groove (1201) is opened at the upper end of the deburring tool (2), the second spring (1202) is fixedly connected to the inner bottom wall of the mounting groove (1201), and the upper end of the second spring (1202) is fixed with the lower end of the mounting block (1303), the T-shaped groove (1203) is opened at one side of the mounting block (1303), the T-shaped block (1204) is slidingly connected in the T-shaped groove (1203), and the T-shaped block (1204) and the third spring (1301) are fixed; The lower end of the table (1) is provided with L-shaped blocks (5) at four corners, the upper sides of the four L-shaped blocks (5) are provided with clamping plates (6), one side of two L-shaped blocks (5) is fixedly connected with first springs (8), the other side of the two first springs (8) is fixedly connected with sliding platforms (3), the other side of the two sliding platforms (3) is fixedly connected with traction ropes (14), one side of the other two L-shaped blocks (5) is fixedly connected with mounting plates (20), the sides away from each other of the two mounting plates (20) are provided with winding drums (9), one side of the two traction ropes (14) respectively movably penetrates one side of the two L-shaped blocks (5) and is fixedly connected to the circumferential side of the winding drum (9). Two connecting blocks (4) and two sliding platforms (3) are provided with clamping mechanisms (17), each set of clamping mechanisms (17) includes two spring grooves (1701), two fourth springs (1703), two clamping blocks (1704), an insertion block (1705), an insertion groove (1706) and a plurality of clamping grooves (1707), the insertion groove (1706) is opened at the upper end of the sliding platform (3), the insertion block (1705) is fixedly connected to the lower end of the connecting block (4), and the insertion block (1705) is slidingly connected in the insertion groove (1706), two spring grooves (1701) are respectively opened at both sides of the insertion block (1705), two fourth springs (1703) are respectively fixedly connected to the inner walls of the two spring grooves (1701) close to each other, two clamping blocks (1704) are respectively fixedly connected to the sides of the two fourth springs (1703) away from each other, a plurality of clamping grooves (1707) are respectively opened at both sides of the sliding platform (3), and two clamping blocks (1704) are respectively inserted into two clamping grooves (1707); Two fourth springs (1703) are provided with telescopic rods (1702), and two telescopic rods (1702) are respectively fixedly connected between two clamping blocks (1704) and two spring grooves (1701); Four L-shaped blocks (5) and four clamping plates (6) are provided with adjusting mechanisms (18), each set of adjusting mechanisms (18) includes two circular grooves (1801) and two fifth springs (1802), two circular grooves (1801) are opened at the upper end of the L-shaped block (5), and two fifth springs (1802) are respectively fixedly connected to the inner bottom walls of the two circular grooves (1801), and the upper ends of the two fifth springs (1802) are fixed with the clamping plate (6); The sides of two L-shaped blocks (5) located on the same side of the longitudinal direction are provided with two limiting rods (7), and the sides of the two limiting rods (7) are movably penetrated through the sides of the other two L-shaped blocks (5), and two sliding platforms (3) are respectively slidingly connected to the circumferential sides of the four limiting rods (7); The circumferential sides of the four limiting rods (7) are provided with threaded grooves (15), and the circumferential sides of the four threaded grooves (15) are threadedly connected with nuts (16); Two sides close to each other of two mounting plates (20) are provided with connecting barrels (19), the other sides of two connecting barrels (19) are movably penetrated through one side of two mounting plates (20), respectively, and two connecting barrels (19) are respectively fixed with two winding barrels (9), two connecting barrels (19) are threadedly connected with connecting rods (10), and the circumferential side of the connecting rod (10) is fixedly connected with a rotating hand wheel (11).

Images