Retard-bonded steel strand traction device

Abstract

The utility model discloses a retard-bonded steel strand traction device, which relates to the technical field of steel strand production, and adopts the technical scheme that the retard-bonded steel strand traction device comprises a bottom plate, a shell is arranged at the top of the bottom plate in a sliding manner, and one side of the shell is provided with an opening; the first clamping block and the second clamping block are located at the top of the first clamping block, the first clamping block and the second clamping block are both located in the shell, clamping grooves are formed in the inner side of the first clamping block and the inner side of the second clamping block, and a plurality of protruding strips are fixedly connected to the interiors of the two clamping grooves; the traction device has the advantages that the shell can move rightwards under the action of the two steel wire ropes and the fixing pin, then traction is achieved, the two steel wire ropes can be pulled during traction, the first clamping block can be pulled upwards, the first clamping block and the second clamping block make contact more compactly, and the traction effect is better. And the larger the traction force is, the tighter the contact between the clamping block I and the clamping block II is, so that the phenomenon that the end of the steel strand is not firmly fixed during traction can be avoided, and the phenomenon that the steel strand falls off midway is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of steel strand production, in particular to a slow-bonding steel strand traction device. Background Art

[0002] Traditional steel strands are of two types: unbonded and bonded. The retarded bonded prestressing technology combines the characteristics of both unbonded and bonded systems to improve the relevant structural types. It is composed of prestressed tendons (steel strands or steel wire bundles), retarded gel adhesive and outer protective sheath. The steel strands need to be pulled during production, so a traction shaft is required.

[0003] The existing traction device is found to have a problem of not firmly fixing the end of the steel strand when in use, and the steel strand may fall off during traction, thus affecting the normal traction work, so it needs to be improved;

[0004] For this reason, it is necessary to invent a slow-bonding steel strand traction device. Summary of the invention

[0005] To this end, the utility model provides a slow-bonding steel strand traction device to solve the problems in the background technology.

[0006] In order to achieve the above-mentioned purpose, the utility model provides the following technical solution: a slow-bonding steel strand traction device, comprising:

[0007] A bottom plate, a shell is slidably provided on the top of the bottom plate, and one side of the shell is open;

[0008] A card block 1 and a card block 2 located on the top of the card block 1, wherein the card block 1 and the card block 2 are both located inside the housing, and the inner sides of the card block 1 and the card block 2 are both provided with card slots, and a plurality of convex strips are fixedly connected inside the two card slots;

[0009] A moving block, which is fixedly connected to the top of the second clamping block, wherein a rotating rod is movably embedded inside the moving block, wherein the cross section of the rotating rod is T-shaped, the rotating rod passes through the top of the housing, and the rotating rod is connected to the housing by a thread;

[0010] The steel wire rope is provided with two, and the two steel wire ropes are fixedly connected to the top of the first clamping block, and a connecting block is provided on the other side of the shell, and the two steel wire ropes pass through the second clamping block and the other side of the shell and are fixedly connected to the connecting block, and the inner walls on both the front and rear sides of the shell are fixedly connected with protrusions, and the two steel wire ropes are respectively in contact with the two protrusions.

[0011] A fixing pin is embedded in the other side of the housing, the fixing pin is fixedly connected to one side of the connection block, a spring is sleeved outside the fixing pin, the spring is fixedly connected to the fixing pin and the inner wall of the other side of the housing, and the spring is in a compressed state;

[0012] A fixing plate, which is fixedly embedded in the connecting block;

[0013] A mobile assembly is disposed on top of the base plate.

[0014] Preferably, the steel wire rope is slidably connected to the second clamping block, the protrusion and the outer shell.

[0015] Preferably, the fixing pin is slidably connected to the housing.

[0016] Preferably, four positioning rods are fixedly connected inside the shell, and the four positioning rods all pass through the first clamping block and the second clamping block and are slidably connected thereto.

[0017] Preferably, a knob is fixedly connected to the top end of the rotating rod.

[0018] Preferably, the moving component includes two support blocks, both of which are fixedly connected to the top of the base plate and located on the front and rear sides of the shell, a connecting plate is fixedly connected to the top of the base plate, and a motor is fixedly connected to one side of the connecting plate, and threaded rods are embedded in the two support blocks, both of which pass through the connecting plate and one of the threaded rods is fixedly connected to the output shaft of the motor.

[0019] Preferably, the two threaded rods are each provided with a threaded block on the outside, the threaded block is connected to the threaded rod by threads, the two threaded blocks are fixedly embedded in the fixed plate, the two threaded rods are each provided with a sprocket on the outside, the two sprockets are provided with chains on the outside, and the two sprockets are connected by chain drive.

[0020] Preferably, a guide rod is fixedly connected to the top of the bottom plate, the guide rod passes through the outer shell and is slidably connected thereto, and the cross-section of the guide rod is T-shaped.

[0021] Preferably, the threaded rod is connected to the support block and the connecting plate via bearings.

[0022] The beneficial effects of the utility model are:

[0023] The utility model places the end of the steel strand in the two slots and then rotates the rotating rod to move the clamp block two downwards. Since the clamp block one is in contact with the bottom of the shell, the end of the steel strand can be clamped when the clamp block two moves downwards. Subsequently, the moving component can pull the connecting block to move rightward. Then, under the action of the two steel wire ropes and the fixing pin, the shell can be moved to the right, thereby achieving traction. Since the two steel wire ropes are pulled during traction, the clamp block one can be pulled upwards, so that the contact between the clamp block one and the clamp block two is tighter, and the greater the traction force, the tighter the contact between the clamp block one and the clamp block two is. In this way, the phenomenon of loose fixation of the end of the steel strand can be avoided during traction, thereby avoiding the phenomenon of the steel strand falling off midway. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the implementation or the prior art description. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0025] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment in size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0026] Figure 1 The overall structural diagram provided by the utility model;

[0027] Figure 2 A front cross-sectional view provided for the utility model;

[0028] Figure 3 The utility model provides Figure 2 A in the enlarged view;

[0029] Figure 4 A three-dimensional diagram of the housing, the connecting block, the first clamping block, the second clamping block and other components provided by the utility model;

[0030] Figure 5 The utility model provides Figure 4 3D explosion diagram;

[0031] Figure 6 A rear perspective view provided by the utility model;

[0032] In the figure: 1 bottom plate, 2 shell, 3 card block 1, 4 card block 2, 5 convex strip, 6 moving block, 7 rotating rod, 8 wire rope, 9 connecting block, 10 convex block, 11 fixing pin, 12 spring, 13 fixing plate, 14 positioning rod, 15 knob, 16 supporting block, 17 connecting plate, 18 motor, 19 threaded rod, 20 threaded block, 21 sprocket, 22 chain, 23 guide rod. DETAILED DESCRIPTION

[0033] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0034] See attached Figure 1 -Attached Figure 6 The utility model provides a slow-bonding steel strand traction device, comprising:

[0035] A bottom plate 1, a housing 2 is slidably provided on the top of the bottom plate 1, and one side of the housing 2 is open;

[0036] A card block 1 3 and a card block 2 4 located on the top of the card block 1 3, the card block 1 3 and the card block 2 4 are both located inside the housing 2, the card block 1 3 and the card block 2 4 are both provided with a card slot inside, and a plurality of convex strips 5 are fixedly connected inside the two card slots;

[0037] The moving block 6 is fixedly connected to the top of the clamping block 2 4, and a rotating rod 7 is movably embedded inside the moving block 6. The rotating rod 7 has a T-shaped cross section, and the rotating rod 7 passes through the top of the housing 2. The rotating rod 7 is connected to the housing 2 by threads;

[0038] The wire rope 8 is provided with two, and the two wire ropes 8 are fixedly connected to the top of the block 1 3. A connecting block 9 is provided on the other side of the housing 2. The two wire ropes 8 pass through the block 2 4 and the other side of the housing 2 and are fixedly connected to the connecting block 9. The inner walls of the front and rear sides of the housing 2 are fixedly connected with protrusions 10, and the two wire ropes 8 are in contact with the two protrusions 10 respectively.

[0039] A fixing pin 11 is embedded in the other side of the housing 2. The fixing pin 11 is fixedly connected to one side of the connecting block 9. A spring 12 is sleeved outside the fixing pin 11. The spring 12 is fixedly connected to the fixing pin 11 and the inner wall of the other side of the housing 2. The spring 12 is in a compressed state.

[0040] A fixing plate 13, which is fixedly embedded in the connection block 9;

[0041] A mobile assembly, which is arranged on the top of the base plate 1;

[0042] The steel wire rope 8 is slidably connected to the clamp block 2 4 , the protrusion 10 and the housing 2 , the fixing pin 11 is slidably connected to the housing 2 , and the top of the rotating rod 7 is fixedly connected to a knob 15 ;

[0043] In this embodiment, the ends of the steel strands are placed inside the two slots, and then the rotating rod 7 is rotated to move the second clamping block 4 downward. Since the first clamping block 3 is in contact with the bottom of the housing 2, the second clamping block 4 can clamp the ends of the steel strands when it moves downward.

[0044] In order to achieve the purpose of making the card block 1 3 and the card block 2 4 more stable when moving, the device adopts the following technical solution: four positioning rods 14 are fixedly connected inside the housing 2, and the four positioning rods 14 all penetrate the card block 1 3 and the card block 2 4 and are slidably connected thereto. The positioning rods 14 can make the card block 1 3 and the card block 2 4 more stable when moving;

[0045] Among them, in order to achieve the purpose of moving the shell 2 to the right, the present device adopts the following technical solutions: the moving component includes two support blocks 16, the two support blocks 16 are fixedly connected to the top of the bottom plate 1 and are located at the front and rear sides of the shell 2, the top of the bottom plate 1 is fixedly connected to a connecting plate 17, one side of the connecting plate 17 is fixedly connected to a motor 18, threaded rods 19 are embedded in the two support blocks 16, the two threaded rods 19 pass through the connecting plate 17 and one of the threaded rods 19 is fixedly connected to the output shaft of the motor 18, the two threaded rods 19 are externally sleeved with threaded blocks 20, the threaded blocks 20 are connected to the threaded rods 19 by threads, the two threaded blocks 20 are fixedly embedded in the fixed plate 13, the two threaded rods 19 are externally fixedly sleeved with sprockets 21, the two sprockets 21 are externally sleeved with chains 22, the two sprockets 21 are driven and connected by the chain 22, and the moving component can make the shell 2 move to the right;

[0046] In order to achieve the purpose of guiding the shell 2, the device adopts the following technical solution: a guide rod 23 is fixedly connected to the top of the bottom plate 1, the guide rod 23 passes through the shell 2 and is slidably connected thereto, the guide rod 23 has a T-shaped cross section, and the guide rod 23 can guide the shell 2;

[0047] In order to achieve the purpose of reducing wear, the device is implemented by the following technical solution: the threaded rod 19 is connected to the support block 16 and the connecting plate 17 through a bearing, and the bearing connection can reduce wear.

[0048] The use process of the utility model is as follows: when the steel strand needs to be pulled, the end of the steel strand is placed inside the two card slots, and then the knob 15 is turned to rotate the rotating rod 7. Since the rotating rod 7 is connected to the shell 2 by a thread, the rotating rod 7 can rotate to make the moving block 6 and the card block 2 4 move downward. Since the card block 1 3 is in contact with the bottom of the shell 2, the end of the steel strand can be clamped when the card block 2 4 moves downward. Then the motor 18 is controlled to work, and the motor 18 drives the rear threaded rod 19 to rotate. The rotation of the rear threaded rod 19 drives the chain 22 to rotate. The rotation of the chain 22 drives the front threaded rod 19 to rotate, so that the two The threaded rods 19 rotate at the same time, and the two threaded rods 19 rotate to drive the two threaded blocks 20 to move rightward, so that the fixing plate 13 and the connecting block 9 move rightward, and then the housing 2 can be moved rightward under the action of the two steel wire ropes 8 and the fixing pin 11, thereby achieving traction. Since traction is achieved by pulling the two steel wire ropes 8, the clamping block 1 3 can also be pulled upward when the steel wire ropes 8 are pulled, so that the contact between the clamping block 1 3 and the clamping block 2 4 is tighter, and the greater the traction force, the tighter the contact between the clamping block 1 3 and the clamping block 2 4, so that the phenomenon of loose fixation of the steel strand end can be avoided during traction, thereby avoiding the phenomenon of the steel strand falling off midway;

[0049] A fixing pin 11 and a spring 12 are designed, so that the stability of traction can be ensured when the traction is in progress when the two steel wire ropes 8 are matched, and the phenomenon that the upper half of the housing 2 is subjected to traction can be avoided.

[0050] The above are only preferred embodiments of the present invention. Any person skilled in the art may modify the present invention or modify it into an equivalent technical solution by using the above technical solution. Therefore, any simple modification or equivalent replacement based on the technical solution of the present invention shall fall within the scope of protection claimed by the present invention.

Claims

1. A slow-bonding steel strand traction device, characterized in that: include: A bottom plate (1), a housing (2) being slidably disposed on the top of the bottom plate (1), and one side of the housing (2) being arranged to be open; A card block 1 (3) and a card block 2 (4) located on the top of the card block 1 (3), wherein the card block 1 (3) and the card block 2 (4) are both located inside the housing (2), and the card block 1 (3) and the card block 2 (4) are both provided with card slots on their inner sides, and a plurality of convex strips (5) are fixedly connected inside the two card slots; A moving block (6) is fixedly connected to the top of the second clamping block (4), a rotating rod (7) is movably embedded inside the moving block (6), the rotating rod (7) has a T-shaped cross section, the rotating rod (7) passes through the top of the outer shell (2), and the rotating rod (7) is connected to the outer shell (2) by a thread; The steel wire rope (8) is provided in two pieces, the two steel wire ropes (8) are fixedly connected to the top of the first clamping block (3), a connecting block (9) is provided on the other side of the housing (2), the two steel wire ropes (8) pass through the second clamping block (4) and the other side of the housing (2) and are fixedly connected to the connecting block (9), the inner walls on both the front and rear sides of the housing (2) are fixedly connected with protrusions (10), and the two steel wire ropes (8) are in contact with the two protrusions (10) respectively. A fixing pin (11) is embedded in the other side of the housing (2), the fixing pin (11) is fixedly connected to one side of the connecting block (9), a spring (12) is sleeved on the outside of the fixing pin (11), the spring (12) is fixedly connected to the fixing pin (11) and the inner wall of the other side of the housing (2), and the spring (12) is in a compressed state; A fixing plate (13) fixedly embedded in the connecting block (9); A moving assembly is arranged on the top of the base plate (1).

2. A slow-bonding steel strand traction device according to claim 1, characterized in that: The steel wire rope (8) is slidably connected to the second clamping block (4), the protrusion (10) and the housing (2).

3. A slow-bonding steel strand traction device according to claim 1, characterized in that: The fixing pin (11) is slidably connected to the housing (2).

4. The slow-bonding steel strand traction device according to claim 1, characterized in that: Four positioning rods (14) are fixedly connected inside the shell (2), and the four positioning rods (14) all penetrate the first clamping block (3) and the second clamping block (4) and are slidably connected thereto.

5. The slow-bonding steel strand traction device according to claim 1, characterized in that: The top end of the rotating rod (7) is fixedly connected with a knob (15).

6. A slow-bonding steel strand traction device according to claim 1, characterized in that: The moving assembly comprises two support blocks (16), the two support blocks (16) are fixedly connected to the top of the base plate (1) and are located at the front and rear sides of the housing (2), the top of the base plate (1) is fixedly connected to a connecting plate (17), one side of the connecting plate (17) is fixedly connected to a motor (18), and threaded rods (19) are embedded in the two support blocks (16), the two threaded rods (19) pass through the connecting plate (17), and one of the threaded rods (19) is fixedly connected to the output shaft of the motor (18).

7. A slow-bonding steel strand traction device according to claim 6, characterized in that: The two threaded rods (19) are both sleeved with threaded blocks (20), the threaded blocks (20) are connected to the threaded rods (19) by threads, the two threaded blocks (20) are both fixedly embedded in the fixing plate (13), the two threaded rods (19) are both sleeved with sprockets (21), the two sprockets (21) are sleeved with chains (22), and the two sprockets (21) are connected by driving via the chain (22).

8. The slow-bonding steel strand pulling device according to claim 1, characterized in that: A guide rod (23) is fixedly connected to the top of the bottom plate (1); the guide rod (23) penetrates the outer shell (2) and is slidably connected thereto; the cross section of the guide rod (23) is T-shaped.

9. The slow-bonding steel strand traction device according to claim 6, characterized in that: The threaded rod (19) is connected to the support block (16) and the connecting plate (17) via bearings.

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