A kind of electric power wedge-shaped strain clamp

Abstract

The present invention relates to the technical field of wedge-shaped strain clamps, and particularly relates to a power wedge-shaped strain clamp, which includes a housing and two plastic clamping plates that can slide obliquely in the inclined grooves inside the housing. The middle semi-circular holes of the two plastic clamping plates clamp the outer edge of the cable. When the power wedge-shaped strain clamp slips, through the independent movement of the cable, the head clamping mechanism is driven to move, so that the hook plate pushes the two abutting columns inward to clamp the cable, making the plastic clamping plate and the cable fixed again, avoiding the cable being pulled for a long distance. And at the same time, if the plastic clamping plate and the cable move together, the abutting columns will not be squeezed inward by the inner pressing mechanism, and the head clamping mechanism will move along with it, and there is no need and will not fix the cable. And if the cable still slips after the abutting columns are squeezed inward, through the abutment between the stop block and the clamping plate, the head clamping mechanism tightens and fixes the cable, that is, the cable is fixed more tightly.

Description

Technical Field

[0001] The present invention relates to the technical field of wedge-shaped strain clamps, and particularly to a power wedge-shaped strain clamp. Background Art

[0002] For a power wedge-shaped strain clamp, two plastic splints are used to clamp a cable. Under the action of the cable tension, the cable pulls the two plastic splints to move horizontally along the housing, so that the plastic splints squeeze and clamp the cable more and more tightly. However, in hot summer, both the plastic splints and the cable will be heated by high temperature, causing melting between the two, resulting in the cable slipping, and then the cable will be pulled for a long distance, finally causing a power failure. In order to reduce the occurrence of failures, when the cable slips, it is necessary to fix the cable to prevent the cable from being pulled for a long distance.

[0003] If the plastic splints move horizontally along with the cable, it is under the action of the cable tension and clamps the cable more and more tightly.

[0004] Therefore, it is necessary to design a power wedge-shaped strain clamp that can fix the cable when the cable slips, prevent the cable from being pulled for a long distance, and at the same time, if the plastic splints move with the cable, it will not fix the cable, and the added structure cannot affect the extraction and replacement of the plastic splints. Summary of the Invention

[0005] Aiming at the above existing technical deficiencies, the purpose of the present invention is to provide a power wedge-shaped strain clamp that can fix the cable when the cable slips, prevent the cable from being pulled for a long distance, and at the same time, if the plastic splints move with the cable, it will not fix the cable, and the added structure cannot affect the extraction and replacement of the plastic splints.

[0006] To achieve the above purpose, the present invention adopts the following technical scheme: The present invention provides a power wedge-shaped strain clamp, including a housing and two plastic splints that can slide obliquely in the inner chute of the housing. The middle semi-circular holes of the two plastic splints clamp the outer edge of the cable, and anti-slip patterns are provided on the semi-circular holes of the two plastic splints. It also includes a head clamping mechanism and hook plates fixedly installed on both sides of the head clamping mechanism. The head clamping mechanism is located at the front end of the plastic splints and clamps the outer edge of the cable. Slots for inserting the ends of the hook plates are provided on both sides of the housing. The hook plates are slidably installed on the housing along the length direction of the cable. A contact column that can slide along the width direction of the cable is provided on the plastic splint. One end of the contact column contacts the cable, and an internal pressure mechanism that contacts the other end of the contact column is fixedly provided on the hook plate. The internal pressure mechanism is used to push the contact column inward when sliding horizontally along with the hook plate.

[0007] Preferably, a plurality of grooves are arranged on the outer edge slope of the plastic clamping plate, and the hook claws bent inwardly of the hook plate are inserted into the grooves, and the hook claws are in contact with a side of the groove away from the hook plate.

[0008] Preferably, the internal pressure mechanism includes an inclined plate and a pusher capable of adjusting the position of the inclined plate along the cable width direction, the pusher is fixedly mounted on the cross arm of the hook plate, the inclined plate is fixedly mounted on the end of the pusher, and the inclined surface of the inclined plate contacts the end of the abutment column.

[0009] Preferably, the pusher includes a stud and two guide pillars, the two guide pillars are slidably connected to the cross arm, a circular baffle is provided at the end of the guide pillar, the stud is meshingly mounted on the cross arm, the end of the stud abuts against the inclined plate, and a hexagonal hole is opened at the end of the stud.

[0010] Preferably, there is a card plate at the end of the plastic splint, and a shaped card slot is provided on the card plate for the cross arm to be inserted into, and the outer edge of the cross arm fits with the inner edge of the shaped card slot. A stop block is provided on one side of the end of the inclined plate. When the interference column cannot lock the cable, one side of the stop block contacts the card plate.

[0011] Preferably, the head clamping mechanism comprises two clamping plates clamped on the cable, the two clamping plates are fixedly connected by two upper and lower bolts, and the two cross arms are respectively fixedly installed on both sides of the two clamping plates.

[0012] Preferably, a guide hole for inserting the abutment column is provided on the plastic clamping plate, the abutment column is inserted into the guide hole of the plastic clamping plate, and the surface of the end of the abutment column contacting the cable is rough.

[0013] Preferably, it also includes an elastic inward pulling mechanism, which includes a guide column 2 and two springs. The two cross arms are provided with guide plates horizontally slidably connected to the guide column 2. Circular baffles are fixedly provided at both ends of the guide column 2. The two springs are respectively used to provide inward elastic thrust to the two cross arms.

[0014] Preferably, a reinforcing plate is fixedly provided on the top of the shell, and the reinforcing plate spans the top gap of the shell.

[0015] Preferably, when the hook portion contacts the end of the groove of the plastic clamping plate, gaps are left between both sides of the hook portion and both sides of the slot in the length direction.

[0016] The beneficial effect of the present invention is that when the electric wedge-type tension clamp slips, the cable moves alone to drive the head clamping mechanism to move, so that the hook plate pushes the two abutment columns inward to clamp the cable, so that the plastic clamp plate and the cable are fixed again, and the cable is prevented from being pulled a long distance. At the same time, if the plastic clamp plate and the cable move together, the abutment column will not be squeezed inward by the internal pressure mechanism, and the head clamping mechanism moves together, and the cable does not need to be fixed.

[0017] If the abutting column still slips after being pressed inward, the head clamping mechanism tightens and fixes the cable by abutting between the stop block and the clamping plate, that is, the cable is fixed more tightly.

[0018] When the cable is tightened by the wire tightener, the cable clamped by the plastic splint will become loose. The worker can move the head clamping mechanism towards the plastic splint by knocking, so that the head clamping mechanism pushes the plastic splint through the groove, making it easy for the plastic splint to slide out of the shell. This facilitates the worker to replace the plastic splint, and does not affect the disassembly of the plastic splint due to the addition of the hook plate and the head clamping mechanism. Instead, the disassembly process becomes simpler.

[0019] Moreover, due to the action of the internal pressure mechanism, even if the plastic splint deflects inward, the contact between the internal pressure mechanism and the abutting column can still be ensured.

[0020] Due to the action of the elastic internal tension mechanism, during high-altitude installation, the number of parts can be reduced and the position can be adjusted more conveniently. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0022] Figure 1 It is a three-dimensional structure diagram of the present invention.

[0023] Figure 2 It is a top view of the present invention.

[0024] Figure 3 It is a three-dimensional structure decomposition diagram of the present invention.

[0025] Figure 4 It is a schematic diagram of the contact state between the inclined plate and the abutting column.

[0026] Figure 5 It is a three-dimensional structure diagram of the internal pressure mechanism.

[0027] Figure 6 It is a schematic diagram of the installation state of the head clamping mechanism and the elastic internal tension mechanism.

[0028] Figure 7 It is a schematic diagram of the separated state between the abutting column and the plastic splint.

[0029] Description of reference numerals: 1. Housing; 1a. Slot; 2. Plastic splint; 3. Head clamping mechanism; 3a. Splint; 3b. Bolt; 4. Hook plate; 4a. Hook claw part; 4b. Cross arm; 5. Contact post; 6. Internal pressure mechanism; 6a. Inclined plate; 6b. Pusher; 6b1. First guide post; 6b2. Stud; 6c. Stop block; 7. Clamping plate; 9. Elastic internal pulling mechanism; 9a. Second guide post; 9b. Spring; 9c. Circular baffle; 10. Cable; 11. Reinforcing plate. Detailed implementation manners

[0030] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0031] Embodiment: The present invention provides a power wedge-shaped strain clamp, as Figures 1-7As shown in the figure, it includes a housing 1 and two plastic clamping plates 2 that can slide obliquely in the inner chute of the housing 1. The middle semi-circular holes of the two plastic clamping plates 2 clamp the outer edge of the cable 10, and the semi-circular holes of the two plastic clamping plates 2 are provided with anti-slip patterns. It also includes a head clamping mechanism 3 and hook plates 4 fixedly installed on both sides of the head clamping mechanism 3. The head clamping mechanism 3 is located at the front end of the plastic clamping plate 2 and clamps the outer edge of the cable 10. Slots 1a for inserting the ends of the hook plates 4 are opened on both sides of the housing 1. The hook plates 4 are slidably installed on the housing 1 along the length direction of the cable 10. A contact post 5 that can slide along the width direction of the cable 10 is provided on the plastic clamping plate 2. One end of the contact post 5 contacts the cable 10, and an internal pressure mechanism 6 that contacts the other end of the contact post 5 is fixedly arranged on the hook plate 4. The internal pressure mechanism 6 is used to push the contact post 5 inward when sliding horizontally along with the hook plate 4. If the cable 10 and the plastic clamping plate 2 move together, the head clamping mechanism 3, the hook plate 4, the contact post 5, and the internal pressure mechanism 6 will move together. If the plastic clamping plate 2 slips relative to the cable 10 and the cable 10 moves horizontally alone, due to the fixed connection between the head clamping mechanism 3 and the cable 10, the hook plate 4 will drive the internal pressure mechanism 6 to move along. Since the contact post 5 does not move, at this time, the moving internal pressure mechanism 6 will push the two contact posts 5 inward to clamp the cable 10, so that the cable 10 no longer slips relative to the plastic clamping plate 2, that is, it avoids the cable being pulled for a long distance. By inserting the hook plate 4 into the slot 1a, if the internal pressure mechanism 6 still cannot lock the cable 10 when pushing the contact post 5, then the hook plate 4 can be directly hooked to the housing 1, so that the head clamping mechanism 3 cannot continue to move, that is, the cable 10 is fixed by the head clamping mechanism 3, playing an insurance role and further avoiding the cable 10 from slipping.

[0032] A plurality of grooves are provided on the outer inclined surface of the plastic clamping plate 2. The main purpose of these grooves is to be compressed when the plastic clamping plate 2 is pulled along the housing 1. The inwardly bent hook part 4a of the hook plate 4 is inserted into the groove, and the hook part 4a contacts the side of the groove away from the hook plate 4. When replacing the plastic clamping plate 2, one end of a wire tightener is connected to the bottom of the housing 1, and the other end is connected to the cable 10, and the connection position is on the front side of the head clamping mechanism 3. When the wire tightener is tightened, the cable clamped by the plastic clamping plate 2 will become loose. The worker can move the head clamping mechanism 3 towards the plastic clamping plate 2 by knocking, so that the head clamping mechanism 3 pushes the plastic clamping plate 2 to move through the groove, so that the plastic clamping plate 2 can easily slide out of the housing 1, facilitating the worker to replace the plastic clamping plate 2. It will not affect the disassembly of the plastic clamping plate 2 due to the addition of the hook plate 4 and the head clamping mechanism 3, but makes the disassembly process simpler.

[0033] The internal pressure mechanism 6 includes an inclined plate 6a and a pusher 6b capable of adjusting the position of the inclined plate 6a along the width direction of the cable 10. The pusher 6b is fixedly mounted on the cross arm 4b of the hook plate 4. The inclined plate 6a is fixedly mounted on the end of the pusher 6b. The inclined surface of the inclined plate 6a contacts the end of the abutment column 5. When the cross arm 4b moves horizontally, the cross arm 4b will drive the inclined plate 6a to move horizontally, and the inclined plate 6a will push the abutment column 5 inward through the inclined surface, so that the two abutment columns 5 can clamp the cable 10. When the plastic clamp 2 is installed, the front end of the plastic clamp 2 is squeezed most tightly with the cable 10, which results in a probability that the plastic clamp 2 will rotate slightly inward, resulting in the end of the abutment column 5 being unable to contact the inclined surface of the inclined plate 6a. Therefore, the horizontal adjustment is performed by the pusher 6b to push the inclined plate 6a to contact the abutment column 5.

[0034] The pusher 6b includes a stud 6b2 and two guide posts 6b1. The two guide posts 6b1 are slidably connected to the cross arm 4b. A circular baffle is provided at the end of the guide post 6b1. The stud 6b2 is meshed and installed on the cross arm 4b. The end of the stud 6b2 abuts against the inclined plate 6a. A hexagonal hole is provided at the end of the stud 6b2. After the cross arm 4b is installed, the stud 6b2 is rotated so that the stud 6b2 pushes the inclined plate 6a to move toward the abutment post 5 and comes into contact with the abutment post 5.

[0035] There is a card plate 7 at the end of the plastic splint 2, and a U-shaped card slot is provided on the card plate 7 for the cross arm 4b to be inserted into. The outer edge of the cross arm 4b fits with the inner edge of the U-shaped card slot, and the two card plates 7 are connected to the U-shaped card slots of the two cross arms 4b, so as to realize the sliding guidance of the cross arm 4b. A stopper 6c is provided on one side of the end of the inclined plate 6a. When the abutment column 5 cannot lock the cable 10, the cable 10 keeps slipping and sliding along the plastic splint 2, and finally one side of the stopper 6c contacts the card plate 7, so as to realize the limit blocking of the cross arm 4b, that is, the head clamping mechanism 3 fixes the cable 10, which plays a role of insurance.

[0036] The head clamping mechanism 3 includes two clamping plates 3a clamped on the cable 10, the two clamping plates 3a are fixedly connected by two upper and lower bolts 3b, and two cross arms 4b are fixedly installed on both sides of the two clamping plates 3a. The clamping plates 3a are made of metal, and the clamping between the two clamping plates 3a and the cable 10 will not be affected by the temperature and affect the clamping force on the cable 10. The plastic clamping plate 2 cannot be made of metal, and must be made of plastic material to be deformable. When the cross arm 4b cannot move, the cable 10 can be made immobile by connecting the clamping plate 3a to the cable 10.

[0037] The plastic splint 2 is provided with a guide hole for inserting the abutting post 5. The abutting post 5 is inserted into the guide hole of the plastic splint 2, so that the abutting post 5 can be slidably mounted on the plastic splint 2, and the end surface of the abutting post 5 in contact with the cable 10 is rough, so that when the abutting post 5 clamps the cable 10, a strong anti-slip force can be generated.

[0038] It further includes an elastic inner pulling mechanism 9. The elastic inner pulling mechanism 9 includes a second guide post 9a and two springs 9b. Guide plates that are horizontally slidably connected to the second guide post 9a are arranged on the two cross arms 4b. Circular baffles 9c are fixedly arranged at both ends of the second guide post 9a respectively. The two springs 9b are respectively used to provide an inward elastic thrust to the two cross arms 4b. The springs 9b are sleeved on the second guide post 9a. One end of the spring 9b abuts against the guide plate, and the other end abuts against the circular baffle 9c. If the elastic inner pulling mechanism 9 is not designed, since when installing the head clamping mechanism 3, the hook plate 4 and the abutting post 5, it is necessary to first sleeved the head clamping mechanism 3 on the cable 10 without clamping it, then install the abutting post 5 into the plastic splint 2, and finally install the hook plate 4. There are many parts, and the parts are likely to fall from a high altitude during the installation process. Therefore, by designing the elastic inner pulling mechanism 9, the bolt 3b on the head clamping mechanism 3 is not installed in advance, and the hook plate 4 is directly installed on the head clamping mechanism 3 in advance. During the installation, only after the abutting post 5 is installed into the plastic splint 2, then pull the two hook plates 4, so that the cross arms 4b are respectively clamped into the U-shaped slots of the two clamping plates 7, the two splints 3a clamp the cable 10, and then horizontally push the adjusting hook portion 4a to contact with one side of the groove of the plastic splint 2, and finally install the bolt 3b. The whole process reduces the installation of parts, and reduces the possibility of parts falling from a high altitude, and it is also more convenient to adjust the positions of the hook plate 4 and the head clamping mechanism 3.

[0039] A reinforcing plate 11 is fixedly arranged on the top of the housing 1. The reinforcing plate 11 straddles the top gap of the housing 1. Since the slot 1a is opened on the housing 1, this results in a reduction in the overall rigidity of the housing 1. Therefore, the rigidity is increased by setting the reinforcing plate 11. It should be noted that the reinforcing plate 11 is installed after the cable 10 is installed, because the gap at the top of the housing 1 needs to allow the cable 10 to be clamped during installation.

[0040] When the hook portion 4a contacts the end of the groove of the plastic splint 2, gaps are left on both sides of the hook portion 4a and both sides in the length direction of the slot 1a. Because when the plastic splint 2 is installed itself, its position changes with the extrusion situation between it and the cable 10. Therefore, through this gap, the slot 1a can adjust the position of the hook portion 4a according to the change in the position of the plastic splint 2, and after the adjustment is completed, the head clamping mechanism 3 can be adaptively installed according to the position of the hook plate 4.

[0041] During use, when the cable 10 and the plastic splint 2 move together, the head clamping mechanism 3, the hook plate 4, the contact post 5 and the internal pressure mechanism 6 will move together.

[0042] If there is slippage between the plastic splint 2 and the cable 10, and the cable 10 moves horizontally alone, due to the fixed connection between the head clamping mechanism 3 and the cable 10, the hook plate 4 will drive the internal pressure mechanism 6 to move along. Since the contact post 5 does not move, at this time, the moving internal pressure mechanism 6 will push the two contact posts 5 to move inward, and the cable 10 will be clamped by the two contact posts 5, so that the cable 10 no longer slips relative to the plastic splint 2, that is, the cable is prevented from being pulled for a long distance.

[0043] If the contact post 5 cannot lock the cable 10, the cable 10 will keep slipping along the plastic splint 2 until one side of the stop block 6c contacts the clamping plate 7, realizing the limit and block of the cross arm 4b, that is, realizing the fixation of the cable 10 by the head clamping mechanism 3, playing an insurance role.

[0044] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention is also intended to include these modifications and variations.

Claims

1. A power wedge-shaped strain clamp, characterized in that, It includes a housing (1) and two plastic clamping plates (2) that can slide obliquely in the inclined slots inside the housing (1). The middle semi-circular holes of the two plastic clamping plates (2) clamp the outer edge of the cable (10), and anti-slip patterns are provided on the semi-circular holes of the two plastic clamping plates (2). It also includes a head clamping mechanism (3) and hook plates (4) fixedly installed on both sides of the head clamping mechanism (3). The head clamping mechanism (3) is located at the front end of the plastic clamping plate (2) and clamps the outer edge of the cable (10). Slots (1a) for inserting the ends of the hook plates (4) are opened on both sides of the housing (1). The hook plates (4) are slidably installed on the housing (1) along the length direction of the cable (10). A contact post (5) that can slide along the width direction of the cable (10) is provided on the plastic clamping plate (2). One end of the contact post (5) contacts the cable (10). An internal pressure mechanism (6) that contacts the other end of the contact post (5) is fixedly provided on the hook plate (4). The internal pressure mechanism (6) is used to push the contact post (5) inward when sliding horizontally along with the hook plate (4). A plurality of grooves are provided on the outer inclined surface of the plastic clamping plate (2). The hook claw part (4a) bent inward of the hook plate (4) is inserted into the groove, and the hook claw part (4a) contacts the side of the groove away from the hook plate (4). The internal pressure mechanism (6) includes an inclined plate (6a) and a pusher (6b) that can adjust the position of the inclined plate (6a) along the width direction of the cable (10). The pusher (6b) is fixedly installed on the cross arm (4b) of the hook plate (4). The inclined plate (6a) is fixedly installed at the end of the pusher (6b). The inclined surface of the inclined plate (6a) contacts the end of the contact post (5). A clamping plate (7) is provided at the end of the plastic clamping plate (2). A U-shaped clamping groove for the cross arm (4b) to be inserted into is opened on the clamping plate (7). The outer edge of the cross arm (4b) fits the inner edge of the U-shaped clamping groove. A stop block (6c) is provided on one side of the end of the inclined plate (6a). When the contact post (5) cannot lock the cable (10), one side of the stop block (6c) contacts the clamping plate (7).

2. The wedge-shaped tension clamp for electricity according to claim 1, characterized in that, The pusher (6b) includes a stud (6b2) and two guide posts one (6b1). The two guide posts one (6b1) are slidably connected to the cross arm (4b). A circular baffle is provided at the end of the guide post one (6b1). The stud (6b2) is meshingly installed on the cross arm (4b). The end of the stud (6b2) abuts against the inclined plate (6a). A hexagonal hole is opened at the end of the stud (6b2).

3. The wedge-shaped tension clamp for electric power according to claim 1, characterized in that, The head clamping mechanism (3) includes two clamping plates (3a) that clamp the cable (10). The two clamping plates (3a) are fixedly connected by two bolts (3b) above and below. The two cross arms (4b) are respectively fixedly installed on both sides of the two clamping plates (3a).

4. The wedge-shaped tension clamp for electric power according to claim 1, wherein, A guide hole for inserting the contact post (5) is opened on the plastic clamping plate (2). The contact post (5) is inserted into the guide hole of the plastic clamping plate (2), and the surface of the end of the contact post (5) that contacts the cable (10) is rough.

5. The wedge-shaped tension clamp for electric power according to claim 2, wherein It further includes an elastic inner pulling mechanism (9). The elastic inner pulling mechanism (9) includes a second guide post (9a) and two springs (9b). Guide plates that are horizontally and slidably connected to the second guide post (9a) are provided on the two cross arms (4b). Circular baffles (9c) are fixedly provided at both ends of the second guide post (9a). The two springs (9b) are respectively used to provide inward elastic thrust to the two cross arms (4b).

6. The a kind of electric power wedge-shaped strain clamp according to claim 1, characterized in that A reinforcing plate (11) is fixedly provided at the top of the housing (1). The reinforcing plate (11) spans the top gap of the housing (1).

7. The tension clamp for electric power according to claim 2, characterized in that When the hook part (4a) contacts the groove end of the plastic splint (2), gaps are left between both sides of the hook part (4a) and both sides in the length direction of the slot (1a).

Images