Anti-jumping mechanism of stretching machine

Abstract

The invention discloses an anti-jumping mechanism of a stretching machine, which comprises a mounting rack, the mounting rack is fixedly mounted at two ends of a tension wheel, the mounting rack is located at the position where a cable enters and winds the tension wheel, the mounting rack is in threaded connection with a wire inlet clamping shaft, a wire inlet clamping rack is rotatably mounted at the lower end of the wire inlet clamping shaft, and a wire inlet clamping wheel is rotatably mounted on the lower side of the wire inlet clamping rack. Two installation columns are fixedly installed on the upper side of the installation frame, hinge shafts are hinged to the upper ends of the installation columns, wire outlet clamping wheels are rotatably installed on the hinge shafts, fixing columns are hinged to the upper ends of the hinge shafts, the two fixing columns are in threaded connection to the same wire outlet clamping shaft, and the thread rotating directions of the two ends of the wire outlet clamping shaft are opposite. According to the invention, the position of an incoming cable of the tension wheel is fixed through the incoming cable clamping wheel, so that the incoming end of the cable is fixed in the cable slot on the tension wheel, and the influence of swinging of the outgoing end of the cable is reduced through the limitation of the outgoing cable of the tension wheel by the outgoing cable clamping wheel, so that the possibility that the cable jumps out of the slot in the use process of the stretching machine is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of stretching machines and relates to an anti-groove jumping mechanism for a stretching machine. Background Art

[0002] A cable tensioner is a type of mechanical equipment used in cable installation. During the installation process, it provides traction and maintains cable tension. The cable tensioner or tensioner is equipped with a tension pulley, and the cable is typically spirally wound in a cable trough outside the tension pulley.

[0003] During the cable pulling process, both ends of the cable may swing due to the influence of wind and other external forces, which may cause the cable to escape from the wire groove of the tension wheel during the swinging process, affecting the normal operation of the tensioning machine. Summary of the Invention

[0004] In view of the above problems, the present invention proposes a tensioning machine anti-jumping mechanism, which effectively solves the problems in the prior art.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is as follows:

[0006] A tensioning machine anti-slot-jumping mechanism, comprising:

[0007] A mounting frame, the mounting frame is fixedly mounted on both ends of the tension wheel, and the mounting frame is located at the position where the cable enters and winds around the tension wheel;

[0008] An incoming line clamp shaft, the incoming line clamp shaft being threadedly connected to the mounting bracket;

[0009] An incoming line card holder, the incoming line card holder being rotatably mounted on the lower end of the incoming line card shaft;

[0010] A wire feed clamping wheel, the wire feed clamping wheel is rotatably mounted on the wire feed clamping frame, and the side surface of the wire feed clamping wheel faces the position where the cable enters the winding tension wheel;

[0011] A mounting post, the mounting post being fixedly mounted on the upper side of the mounting frame, and two mounting posts being provided;

[0012] A hinge shaft, the upper end of each mounting column is hingedly connected to the hinge shaft;

[0013] A wire-out clamping wheel, on which the hinge shaft is rotatably mounted;

[0014] A fixed column, the upper end of each hinge shaft is hingedly connected to the fixed column;

[0015] The outlet clamp shaft is threadedly connected to the two fixing columns, and the threads at both ends of the outlet clamp shaft have opposite rotation directions.

[0016] Optionally, a wire feed push wheel is rotatably mounted on one side of the mounting frame, and the wire feed push wheel is mounted above the wire feed position of the wire feed clamping wheel.

[0017] Optionally, the outlet clamp wheel is fixedly connected to a pawl, the hinge shaft is fixedly mounted with a ratchet, and the pawl is mounted with a reset spring.

[0018] Optionally, the pawl is provided with a through hole, a positioning pin is provided in the through hole, and the end surface of the outlet clamp wheel is provided with a positioning hole.

[0019] Optionally, the mounting frame includes a mounting plate and two support plates, the two support plates are respectively mounted on both ends of the tension wheel, the support plate includes a sleeve, a sleeve rod is slidably mounted in the sleeve, and a locking piece is mounted on the support plate.

[0020] Optionally, one of the fixing columns is fixedly connected to a limiting rod, and after the outlet clamp shaft is tightened, the limiting rod abuts against the other fixing column.

[0021] Optionally, the distance between the two mounting posts is smaller than the distance between the fixing posts after tightening.

[0022] Optionally, a wire-out supporting wheel is rotatably mounted on the upper end of the mounting frame, and the wire-out supporting wheel is mounted below the wire-out position of the wire-out clamping wheel.

[0023] Optionally, the locking member includes a rack and a positioning screw, the rack is fixedly mounted on the mounting sleeve, the positioning screw is threadedly connected to the sleeve, and the positioning screw abuts against the rack after being tightened.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] 1. The incoming cable clamp wheel fixes the position of the cable entering the tension wheel, so that the incoming cable end is fixed in the cable groove on the tension wheel. The outgoing cable clamp wheel restricts the outgoing cable from the tension wheel, reducing the impact of the cable outlet end swinging, thereby reducing the possibility of cable jumping during the use of the tensioning machine.

[0026] 2. The cable entry end of the tension wheel usually enters from a position higher than the tension wheel. By setting the cable entry push wheel, the cable is pressed down before the cable entry clamping wheel, reducing the downward force required by the cable entry clamping wheel to press the cable. At the same time, the swing amplitude of the cable during entry is reduced, making it easier to limit the position of the cable;

[0027] 3. By setting a limit rod, it is convenient to control the clamping degree of the two outlet clamp wheels on the cable when the outlet clamp shaft is tightened, reducing the possibility of excessive clamping force damaging the cable sheath and blocking cable traction. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 1 is a schematic diagram of the overall structure of an embodiment of the present invention;

[0029] Figure 2 is a schematic structural diagram of a mounting frame portion of an embodiment of the present invention;

[0030] Figure 3 2. It is a structural diagram of the wire feed clamping wheel part of an embodiment of the present invention;

[0031] Figure 4 yes Figure 3 An enlarged schematic diagram of part B;

[0032] Figure 5 yes Figure 2 Enlarged schematic diagram of part A.

[0033] Reference numerals: 1, mounting frame; 11, mounting plate; 12, support plate; 121, sleeve; 122, mounting sleeve rod; 13, locking member; 131, rack; 132, positioning screw;

[0034] 2. Inlet clamp shaft; 21. Inlet clamp rack; 22. Inlet clamp wheel; 231. Inlet push wheel;

[0035] 31. Mounting column; 32. Articulated shaft; 33. Wire-out clamping wheel; 331. Ratchet; 332. Ratchet; 333. Return spring; 334. Positioning pin; 34. Fixing column; 341. Limiting rod; 35. Wire-out clamping shaft; 36. Wire-out supporting wheel. DETAILED DESCRIPTION

[0036] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0037] See also Figure 1-Figure 5 , is a tensioning machine anti-jumping mechanism disclosed in an embodiment of the present invention, please refer to Figures 1-4, including a mounting frame 1, the mounting frame 1 is fixedly installed at both ends of the tension wheel, the mounting frame 1 is located at the position where the cable enters the winding tension wheel, the mounting frame 1 is threadedly connected to the incoming card shaft 2, the lower end of the incoming card shaft 2 is rotatably installed with the incoming card frame 21, the lower side of the incoming card frame 21 is rotatably installed with the incoming card wheel 22, the side of the incoming card wheel 22 is facing the position where the cable enters the winding tension wheel, and two mounting columns 31 are fixedly installed on the upper side of the mounting frame 1, the upper ends of the mounting columns 31 are hinged with hinge shafts 32, the hinge shafts 32 are rotatably installed with outgoing card wheels 33, the upper ends of the hinge shafts 32 are hinged with fixed columns 34, the two fixed columns 34 are threadedly connected to the same outgoing card shaft 35, and the threads at both ends of the outgoing card shaft 35 are rotated in opposite directions.

[0038] Specifically, the cable is spirally wound around the tension wheel, and the mounting frame 1 is fixedly mounted on the fixed shells at both ends of the tension wheel. The cable at the input end of the tension wheel passes under the input clamping wheel 22. The input clamping shaft 2 is adjusted to make the input clamping wheel 22 press down the cable and press the cable into the wire groove on the tension wheel. The cable at the output end of the tension wheel passes over the mounting frame 1, and the cable is clamped between the two output clamping wheels 33, and the clamping force is adjusted by the output clamping shaft 35.

[0039] In this way, the position of the incoming cable of the tension wheel is fixed by the incoming cable clamping wheel 22, so that the incoming end of the cable is fixed in the wire groove on the tension wheel, and the outgoing cable of the tension wheel is restricted by the outgoing cable clamping wheel 33, thereby reducing the impact of the swing of the cable outlet end, thereby reducing the possibility of the cable jumping out of the groove during the use of the tensioning machine.

[0040] In some feasible methods, the mounting frame 1 is a C-shaped frame, and the two ends of the mounting frame 1 are fixedly mounted on the fixed shells at both ends of the tension wheel. The incoming wire clamping shaft 2 passes through the mounting frame 1, and the incoming wire clamping frame 21 is a C-shaped frame. The outer side of the incoming wire clamping wheel 22 is a semicircular groove adapted to the cable, and the outer side of the outgoing wire clamping wheel 33 is V-shaped. Both ends of the hinged shaft 32 are in a hinged state. When threading, the outgoing wire clamping shaft 35 is adjusted to increase the distance between the outgoing wire clamping wheels 33 to facilitate threading, and the distance between the two mounting columns 31 is set to be smaller than the distance between the fixed columns 34 after tightening, so that the two mounting columns 31, the outgoing wire clamping wheel 33, the fixed column 34 and the outgoing wire clamping shaft 35 form a trapezoidal structure. The cable can be clamped by tightening the outgoing wire clamping shaft 35. The outgoing wire clamping shaft 35 is set with two different thread rotation directions, so that the clamping of the two outgoing wire clamping wheels 33 can be controlled at the same time when it rotates.

[0041] As a specific implementation of the anti-jumping mechanism of the tensioning machine provided in the application, please refer to Figure 3 A wire feed push wheel 231 is rotatably mounted on one side of the mounting frame 1 , and the wire feed push wheel 231 is mounted above the wire feed position of the wire feed clamping wheel 22 .

[0042] Generally speaking, the wire entry end of the tension wheel usually enters the wire from a position higher than the tension wheel. By setting the wire entry push wheel 231, the wire entry cable is pressed down before the wire entry clamping wheel 22, reducing the downward force required for the wire entry clamping wheel 22 to press the wire, and at the same time reducing the swing amplitude of the cable when entering the wire, which is convenient for limiting the position of the cable.

[0043] In some feasible embodiments, the wire feed push wheel 231 is in the shape of an I-wheel, the width of the annular groove on the outside of the wire feed push wheel 231 is greater than the diameter of the cable, and both ends of the annular groove are set as arc surfaces to reduce the possibility of scratching the cable during cable swinging.

[0044] As another specific embodiment of the anti-jumping mechanism of the tensioning machine provided in the application, please refer to Figure 5 The outlet clamp wheel 33 is fixedly connected to a ratchet 331 , the hinge shaft 32 is fixedly installed with a ratchet 332 , and the ratchet 331 is installed with a return spring 333 .

[0045] In combination with specific usage scenarios, by setting a pawl 331 and a ratchet 332, the outlet clamping wheel 33 can rotate unidirectionally toward the cable outlet end, reducing the possibility of the cable falling out of the tensioning machine cable trough due to cable retreat when the tensioning machine stops or in other situations.

[0046] Furthermore, a through hole is formed in the pawl 331 , a positioning pin 334 is provided in the through hole, and a positioning hole is formed on the end surface of the outlet clamping wheel 33 .

[0047] It should be understood that by providing the positioning hole and the positioning pin 334 , when the outlet clamp wheel 33 needs to be reversed, the positioning pin 334 can be inserted into the positioning hole to separate the pawl 331 from the ratchet 332 .

[0048] As a specific implementation of the anti-jumping mechanism of the tensioning machine provided in the application, please refer to Figure 2 The mounting frame 1 includes a mounting plate 11 and two support plates 12. The two support plates 12 are respectively installed at both ends of the tension wheel. The support plate 12 includes a sleeve 121. A sleeve rod 122 is slidably installed in the sleeve 121. A locking member 13 is installed on the support plate 12.

[0049] It should be understood that by providing the retractable support plate 12 , it is convenient to adjust the height of the mounting plate 11 , and to facilitate the adaptive installation of the outlet and the inlet during installation.

[0050] Furthermore, the locking member 13 includes a rack 131 and a positioning screw 132 . The rack 131 is fixedly mounted on the mounting sleeve 122 . The positioning screw 132 is threadedly connected to the sleeve 121 . The positioning screw 132 abuts against the rack 131 after being tightened.

[0051] It should be understood that by providing the positioning screw 132 and the rack 131 structure, it is convenient to lock the support plate 12 after it is adjusted to a suitable length.

[0052] In some feasible embodiments, the sleeve 121 is a rectangular cylinder, the mounting sleeve rod 122 is a rectangular plate, a plurality of tooth-shaped grooves are opened in the middle of the mounting sleeve rod 122 to form a rack 131, and the positioning screw 132 passes through the sleeve 121 and rests in the tooth groove of the rack 131.

[0053] As a specific implementation of the anti-jumping mechanism of the tensioning machine provided in the application, please refer to Figure 4 One of the fixing columns 34 is fixedly connected to the limiting rod 341 . After the outlet clamp shaft 35 is tightened, the limiting rod 341 abuts against the other fixing column 34 .

[0054] It should be understood that by providing the limit rod 341, it is convenient to control the clamping degree of the two outlet clamping wheels 33 on the cable when the outlet clamping shaft 35 is tightened, thereby reducing the possibility of excessive clamping force damaging the cable sheath and blocking cable traction.

[0055] As a specific implementation of the anti-jumping mechanism of the tensioning machine provided in the application, please refer to Figure 3 The upper end of the mounting frame 1 is rotatably mounted with a wire-out supporting wheel 36 , which is mounted below the wire-out position of the wire-out clamping wheel 33 .

[0056] It should be understood that by providing the outlet support wheel 36, the cable is lifted to the middle of the outlet clamping wheel 33, so that the outlet clamping wheel 33 can better clamp the cable, reduce the sagging of the cable and cause the cable to be stuck in the lower side of the outlet clamping wheel 33, thereby causing excessive force on the lower side of the cable and the possibility of damaging the surface of the cable.

[0057] In some feasible methods, in order to facilitate the incoming wire pushing wheel 231 and the outgoing wire supporting wheel 36 to better adapt to the position of the cable, the incoming wire pushing wheel 231 and the outgoing wire supporting wheel 36 can also be extended and retracted in the force direction by setting the incoming wire clamping shaft 2 and the incoming wire clamping frame 21 structure.

[0058] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A tensioning machine anti-slotting mechanism, characterized in that: include: A mounting frame, the mounting frame is fixedly mounted on both ends of the tension wheel, and the mounting frame is located at the position where the cable enters and winds around the tension wheel; An incoming line clamp shaft, the incoming line clamp shaft being threadedly connected to the mounting bracket; An incoming line card holder, the incoming line card holder being rotatably mounted on the lower end of the incoming line card shaft; A wire feed clamping wheel, the wire feed clamping wheel is rotatably mounted on the wire feed clamping frame, and the side surface of the wire feed clamping wheel faces the position where the cable enters the winding tension wheel; A mounting post, the mounting post being fixedly mounted on the upper side of the mounting frame, and two mounting posts being provided; A hinge shaft, the upper end of each mounting column is hingedly connected to the hinge shaft; A wire-out clamping wheel, on which the hinge shaft is rotatably mounted; A fixed column, the upper end of each hinge shaft is hingedly connected to the fixed column; The outlet clamp shaft is threadedly connected to the two fixing columns, and the threads at both ends of the outlet clamp shaft have opposite rotation directions.

2. The anti-groove jumping mechanism of the stretching machine according to claim 1, characterized in that: A wire-feeding push wheel is rotatably mounted on one side of the mounting frame, and the wire-feeding push wheel is mounted above the wire-feeding position of the wire-feeding clamping wheel.

3. The anti-groove jumping mechanism of the stretching machine according to claim 1, characterized in that: The outlet clamping wheel is fixedly connected with a ratchet, the hinge shaft is fixedly installed with a ratchet, and the ratchet is installed with a reset spring.

4. The anti-groove jumping mechanism of the stretching machine according to claim 3, characterized in that: The pawl is provided with a through hole, a positioning pin is provided in the through hole, and the end surface of the outlet clamp wheel is provided with a positioning hole.

5. The anti-groove jumping mechanism of the stretching machine according to claim 1, characterized in that: The mounting frame includes a mounting plate and two support plates. The two support plates are respectively mounted on both ends of the tension wheel. The support plate includes a sleeve. A sleeve rod is slidably mounted in the sleeve. A locking piece is mounted on the support plate.

6. The anti-groove jumping mechanism of the stretching machine according to claim 1, characterized in that: One of the fixing columns is fixedly connected to a limiting rod. After the outlet clamp shaft is tightened, the limiting rod abuts against the other fixing column.

7. The anti-groove jumping mechanism of the stretching machine according to claim 1, characterized in that: The distance between the two mounting posts is smaller than the distance between the fixing posts after tightening.

8. The anti-groove jumping mechanism of the stretching machine according to claim 1, characterized in that: A wire-out supporting wheel is rotatably mounted on the upper end of the mounting frame, and the wire-out supporting wheel is mounted below the wire-out position of the wire-out clamping wheel.

9. The anti-groove jumping mechanism of the stretching machine according to claim 5, characterized in that: The locking member includes a rack and a positioning screw. The rack is fixedly mounted on the mounting sleeve rod. The positioning screw is threadedly connected to the sleeve. After the positioning screw is tightened, it abuts against the rack.

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