Anti-wear device for cable construction

Abstract

The invention discloses an anti-abrasion device for cable construction, and aims to provide the anti-abrasion device for cable construction, which can change sliding friction between a cable and a wellhead into rolling friction in the installation process of the underground cable, so that friction borne by the cable is effectively reduced, and an external insulating layer of the cable is prevented from being scratched. The device comprises a driving screw; the upper shaft sleeve and the lower shaft sleeve are sequentially distributed on the driving screw rod in the axial direction of the driving screw rod, and at least one of the upper shaft sleeve and the lower shaft sleeve is in threaded connection with the driving screw rod; the supporting frame comprises a plurality of supporting rods which are sequentially distributed in the circumferential direction of the driving screw, one end of each supporting rod is hinged to the upper shaft sleeve, the other end of each supporting rod is provided with a roller frame, and the supporting rods are provided with sliding parts in sliding connection; one ends of the connecting rods are hinged to the lower shaft sleeve, and the other ends of the connecting rods are rotationally connected with the sliding pieces on the corresponding supporting rods; and the guide roller assembly comprises a guide roller arranged on the roller frame.

Description

Technical Field

[0001] The invention relates to the field of cable construction, and in particular to an anti-wear device for cable construction. Background Art

[0002] At present, when installing underground cables, it is necessary to transport the cables to the cable trench through the cable well. Due to the small space of the cable well, the rough wellhead, and the difficulty of bending the cable, the cable and the wellhead of the cable well will produce friction during the cable pulling operation, and the external insulation layer of the cable will be easily scratched by the wellhead, affecting the safe operation of the cable. At present, in order to solve this problem, a wooden board or plastic board is generally placed at the wellhead of the cable well. During the cable pulling operation, the cable is against the wooden board or plastic board placed at the wellhead to avoid friction between the cable and the wellhead of the cable well, resulting in the problem that the external insulation of the cable is scratched by the wellhead, affecting the safe operation of the cable; but at present, this method is not only ineffective, but the cable and the wooden board or plastic board will still rub against each other, causing cable wear; and during the cable pulling operation, the wooden board or plastic board placed at the wellhead is easily displaced, causing the cable to rub against the wellhead of the cable well again. Summary of the invention

[0003] The purpose of the present invention is to provide a cable construction anti-wear device which can change the sliding friction between the cable and the wellhead into rolling friction during the underground cable installation process, thereby effectively reducing the friction on the cable and preventing the outer insulation layer of the cable from being scratched.

[0004] The technical solution of the present invention is: A cable construction anti-wear device, comprising: Drive screw; The upper sleeve and the lower sleeve are sequentially distributed on the driving screw along the axial direction of the driving screw, and at least one of the upper sleeve and the lower sleeve is connected to the driving screw through a thread; The support frame comprises a plurality of support rods which are sequentially distributed around the driving screw rod in the circumferential direction, one end of the support rod is hingedly connected to the upper sleeve, the other end of the support rod is provided with a roller frame, and a sliding member which is slidably connected is provided on the support rod; A connecting rod, corresponding to each supporting rod one by one, one end of the connecting rod is hingedly connected to the lower shaft sleeve, and the other end of the connecting rod is rotatably connected to a sliding member on the corresponding supporting rod; The guide roller assembly includes a guide roller arranged on a roller frame. The specific use of a cable construction anti-wear device of the present scheme is as follows: a support frame of a cable construction anti-wear device is placed into the wellhead of the cable well, with each support frame close to the edge of the wellhead; then, the upper sleeve and / or the lower sleeve are driven to move by rotating the drive screw to drive each support frame to unfold, so that the roller frame is pressed against the edge of the wellhead, thereby fixing a cable construction anti-wear device at the wellhead of the cable well. At this time, the guide roller on the roller frame is located above the edge of the wellhead. Thereafter, during cable construction, the cable is supported on the guide roller for cable traction operations to avoid friction between the cable and the wellhead of the cable well, and the sliding friction between the cable and the wellhead is changed to rolling friction, thereby effectively reducing the friction on the cable and preventing the outer insulation layer of the cable from being scratched, which affects the safe operation of the cable.

[0005] Preferably, the driving screw comprises two upper and lower threaded sections with opposite thread directions, the upper sleeve is connected to one of the threaded sections by threads, and the lower sleeve is connected to the other threaded section by threads. In this way, the upper sleeve and the lower sleeve can be driven to move by rotating the driving screw, so that the upper sleeve and the lower sleeve are moved closer to or away from each other, thereby driving each support frame to expand or collapse.

[0006] Preferably, the upper sleeve is coaxially sleeved on the driving screw, and the upper sleeve is rotationally connected to the driving screw, and the lower sleeve is threadedly connected to the driving screw. In this way, the lower sleeve can be driven to move axially along the driving screw by rotating the driving screw (no axial displacement occurs between the upper sleeve and the driving screw), so that the upper sleeve and the lower sleeve are close to or separated from each other, thereby driving each support frame to expand or collapse.

[0007] Preferably, the upper sleeve is connected to the driving screw by a threaded connection, the lower sleeve is coaxially sleeved on the driving screw, and the lower sleeve is rotationally connected to the driving screw. In this way, the upper sleeve can be driven to move axially along the driving screw by rotating the driving screw (no axial displacement occurs between the lower sleeve and the driving screw), so that the upper sleeve and the lower sleeve are close to or separated from each other, thereby driving each support frame to expand or collapse.

[0008] Preferably, the guide roller assembly includes two guide rollers arranged in a V shape. When the cable is pulled, the cable is supported between the two guide rollers arranged in a V shape, so that the cable is prevented from detaching from the guide rollers and causing friction with the wellhead of the cable well during the cable pulling operation.

[0009] Preferably, the guide roller assembly further comprises: A base plate is arranged on the roller frame; The base vertical plate is fixed on the base plate, and the base vertical plate is extended and distributed upward and downward; The lifting plate frame is lifted up and down along the vertical plate of the base, and the lifting plate frame and the vertical plate of the base are locked and fixed by plate frame bolts; The base block is arranged on the lifting plate frame, and two guide rollers distributed in a V shape are arranged on the base block. In this way, the height of the lifting plate frame can be adjusted according to actual needs, and then the height of the two guide rollers distributed in a V shape can be adjusted to meet the needs of cable pulling operations.

[0010] Preferably, the lifting plate frame is provided with vertical strip holes extending up and down, the plate frame bolts are threadedly connected to the base vertical plate, and the plate frame bolts pass through the vertical strip holes. In this way, after the plate frame bolts are loosened, the height of the lifting plate frame can be conveniently adjusted; after the plate frame bolts are tightened, the lifting plate frame can be stably fixed, and the operation is convenient.

[0011] Preferably, the cross section of the roller frame is in an inverted L shape, and includes an upper support plate and a side support plate that are vertically distributed; the side support plate is also provided with a locking bolt. Based on this, in the process of driving the upper sleeve and / or the lower sleeve to move by rotating the drive screw to drive each support frame to unfold, the side support plate of the roller frame is pressed against the edge of the wellhead to fix the cable construction anti-wear device; at the same time, the upper support plate of the roller frame is supported above the wellhead edge to support the weight of a cable construction anti-wear device, so that a cable construction anti-wear device can be firmly fixed in the wellhead of the cable well to prevent the cable construction anti-wear device from falling or rotating.

[0012] Preferably, a rotary handle is further provided on the upper portion of the driving screw rod, so that the driving screw rod can be driven to rotate by the rotary handle for practical operation.

[0013] Preferably, one end of the support rod is hingedly connected to the upper sleeve by an upper bolt, and the upper bolt is detachably connected to the side wall of the upper sleeve; one end of the connecting rod is hingedly connected to the lower sleeve by a lower bolt, and the lower bolt is detachably connected to the side wall of the lower sleeve; the sliding member is composed of a sliding bolt, and the other end of the connecting rod is detachably connected to the sliding bolt. In this way, the support rod and the connecting rod can be disassembled and stored in a tool box for easy carrying. When carrying out the cable traction construction operation, the above components are assembled, and a cable construction anti-wear device is fixed on the wellhead of the cable well.

[0014] The beneficial effect of the present invention is that during the installation of underground cables, the sliding friction between the cable and the wellhead can be changed into rolling friction, thereby effectively reducing the friction on the cable and preventing the outer insulation layer of the cable from being scratched. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional structural schematic diagram of a cable construction anti-wear device of the present invention.

[0016] Figure 2 It is a structural schematic diagram of the roller frame and guide roller assembly of the present invention.

[0017] In the figure: Drive screw 1, rotary handle 1.1; Upper bushing 2; Lower bushing 3; Support rod 4, elongated hole 4.1; Sliding member 5; Connecting rod 6; Roller frame 7, upper support plate 7.1, side support plate 7.2; Guide roller assembly 8, guide roller 8.1, base plate 8.2, base vertical plate 8.3, lifting plate frame 8.4, base block 8.5, plate frame bolt 8.6; Locking bolt 9. DETAILED DESCRIPTION

[0018] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments: Specific embodiment 1, as Figure 1 , Figure 2 As shown, a cable construction anti-wear device includes a driving screw 1, an upper sleeve 2 and a lower sleeve 3, a support frame, a connecting rod 6 and a guide roller assembly 8.

[0019] The upper sleeve 2 and the lower sleeve 3 are sequentially distributed on the driving screw 1 along the axial direction of the driving screw 1. At least one of the upper sleeve 2 and the lower sleeve 3 is connected to the driving screw 1 by a thread. In this embodiment, the driving screw 1 includes two upper and lower threaded sections with opposite thread directions, the upper sleeve 2 is connected to one of the threaded sections by a thread, and the lower sleeve 3 is connected to the other threaded section by a thread. In this way, the upper sleeve 2 and the lower sleeve 3 can be driven to move by rotating the driving screw 1, so that the upper sleeve 2 and the lower sleeve 3 are close to each other or separated from each other.

[0020] The support frame includes a plurality of support rods 4 evenly distributed around the driving screw rod 1. In this embodiment, there are three support rods 4. One end of the support rod 4 is hingedly connected to the upper sleeve 2. The other end of the support rod 4 is provided with a roller frame 7. A sliding member 5 is provided on the support rod 4 for sliding connection. In this embodiment, a long strip hole 4.1 extending along the length direction of the support rod 4 is provided on the support rod 4, and the sliding member 5 slides along the long strip hole 4.1.

[0021] The connecting rod 6 corresponds to the supporting rod 4 one by one. One end of the connecting rod 6 is hingedly connected to the lower shaft sleeve 3, and the other end of the connecting rod 6 is rotatably connected to the sliding member 5 on the corresponding supporting rod 4.

[0022] The guide roller assembly 8 comprises a guide roller 8.1 arranged on the roller frame 7. In this embodiment, the guide roller assembly 8 comprises two guide rollers 8.1, and the two guide rollers 8.1 are distributed in a V shape.

[0023] The specific use of the cable construction anti-wear device of this embodiment is as follows: A support frame of a cable construction anti-wear device is placed in the wellhead of the cable well, each support frame is close to the edge of the wellhead, and the orientation of the cable construction anti-wear device is adjusted; then, the upper sleeve 2 and the lower sleeve 3 are driven to move by rotating the drive screw 1 to drive each support frame to unfold, so that the roller frame 7 is pressed against the edge of the wellhead, thereby fixing the cable construction anti-wear device at the wellhead of the cable well. At this time, the guide roller 8.1 on the roller frame 7 is located above the edge of the wellhead. Thereafter, during cable construction, the cable is placed between two guide rollers 8.1 distributed in a V shape, and then the cable pulling operation is performed to avoid friction between the cable and the wellhead of the cable well, and the sliding friction between the cable and the wellhead is changed to rolling friction, thereby effectively reducing the friction on the cable and preventing the outer insulation layer of the cable from being scratched, which affects the safe operation of the cable.

[0024] Specifically, Figure 1 As shown, a rotary handle 1.1 is also provided on the upper part of the driving screw rod 1. Thus, the driving screw rod 1 can be driven to rotate by the rotary handle 1.1, so as to facilitate actual operation.

[0025] like Figure 1 , Figure 2 As shown, at least one of the support rods 4 has a guide roller assembly 8 on its roller frame 7. In this embodiment, each roller frame 7 is provided with a guide roller assembly 8. The guide roller assembly 8 includes a guide roller 8.1 disposed on the roller frame 7. In this embodiment, the guide roller assembly 8 includes two guide rollers 8.1, and the two guide rollers 8.1 are distributed in a V shape.

[0026] Further, such as Figure 1 , Figure 2 As shown, the cross section of the roller frame 7 is inverted L-shaped, and includes an upper support plate 7.1 and a side support plate 7.2 that are vertically distributed. A locking bolt 9 is also provided on the side support plate 7.2. Based on this, in the process of driving the upper sleeve 2 and the lower sleeve 3 to move by rotating the drive screw 1 to drive each support frame to unfold, the side support plate 7.2 of the roller frame 7 is pressed against the edge of the wellhead to fix the cable construction anti-wear device; at the same time, the upper support plate 7.1 of the roller frame 7 is supported above the edge of the wellhead to support the weight of a cable construction anti-wear device, so that a cable construction anti-wear device can be firmly fixed in the wellhead of the cable well to prevent the cable construction anti-wear device from falling or rotating. In addition, after the side support plate 7.2 is pressed against the edge of the wellhead, the roller frame 7 can be further fixed by tightening the locking bolt 9 to ensure that the cable construction anti-wear device does not shake during construction.

[0027] In this embodiment, the locking bolt 9 is a butterfly bolt, so that it is convenient to tighten or loosen the locking bolt 9. Of course, it should be noted that the locking bolt 9 can also be an ordinary hexagonal bolt.

[0028] Further, such as Figure 1 As shown, one end of the support rod 4 is hingedly connected to the upper sleeve 2 through an upper bolt, and the upper bolt is detachably connected to the side wall of the upper sleeve 2. Specifically, the outer wall of the upper sleeve 2 is provided with an upper hinge seat corresponding to the support rod 4, and the upper hinge seat is equipped with a detachable upper bolt. One end of the support rod 4 is provided with a support rod 4 through hole, and the upper bolt passes through the support rod 4 through hole. One end of the connecting rod 6 is hingedly connected to the lower sleeve 3 through a lower bolt, and the lower bolt is detachably connected to the side wall of the lower sleeve 3. Specifically, the outer wall of the lower sleeve 3 is provided with a lower hinge seat corresponding to the connecting rod 6, and the lower hinge seat is equipped with a detachable lower bolt. One end of the connecting rod 6 is provided with a first connecting rod through hole, and the lower bolt passes through the first connecting rod through hole. The sliding member 5 is composed of a sliding bolt, and the sliding bolt passes through the long strip hole 4.1. The other end of the connecting rod 6 is detachably connected to the sliding bolt. Specifically, the other end of the connecting rod 6 is provided with a second connecting rod through hole, and the sliding bolt passes through the second connecting rod through hole. In this way, the support rod 4 and the connecting rod 6 can be disassembled and stored in a tool box for easy carrying. When carrying out the traction construction of the cable, the above components are assembled and a cable construction anti-wear device is fixed on the wellhead of the cable well.

[0029] Further, such as Figure 1 , Figure 2 As shown, the guide roller assembly 8 also includes a base plate 8.2, a base vertical plate 8.3, a lifting plate frame 8.4 and a base block 8.5. The base plate 8.2 is arranged on the roller frame 7. In this embodiment, the base plate 8.2 is installed on the upper support plate 7.1 of the roller frame 7 by bolts. The base vertical plate 8.3 is fixed on the base plate 8.2, and the base vertical plate 8.3 is perpendicular to the base plate 8.2. The base vertical plate 8.3 extends up and down. The lifting plate frame 8.4 rises and falls along the base vertical plate 8.3. The lifting plate frame 8.4 and the base vertical plate 8.3 are locked and fixed by the plate frame bolts 8.6. The base block 8.5 is arranged on the lifting plate frame 8.4. Two guide rollers 8.1 distributed in a V shape are arranged on the base block 8.5. In this way, the height of the lifting plate frame 8.4 can be adjusted according to actual needs, and then the height of the two guide rollers 8.1 distributed in a V shape can be adjusted to meet the needs of cable pulling operations.

[0030] In this embodiment, the lifting plate frame 8.4 is provided with vertical strip holes extending up and down, and the plate frame bolts 8.6 are threadedly connected to the base vertical plate 8.3, and the plate frame bolts 8.6 pass through the vertical strip holes. In this way, after the plate frame bolts 8.6 are loosened, the height of the lifting plate frame 8.4 can be conveniently adjusted; after the plate frame bolts 8.6 are locked, the lifting plate frame 8.4 can be stably fixed, and the operation is convenient.

[0031] Specific embodiment 2, as Figure 1 , Figure 2 As shown, a cable construction anti-wear device includes a driving screw 1, an upper sleeve 2 and a lower sleeve 3, a support frame, a connecting rod 6 and a guide roller assembly 8.

[0032] The upper sleeve 2 and the lower sleeve 3 are sequentially distributed on the driving screw 1 along the axial direction of the driving screw 1. At least one of the upper sleeve 2 and the lower sleeve 3 is connected to the driving screw 1 by a thread. In this embodiment, the upper sleeve 2 is coaxially sleeved on the driving screw 1, and the upper sleeve 2 and the driving screw 1 are rotationally connected, and the upper sleeve 2 and the driving screw 1 cannot move relative to each other along the axial direction of the driving screw 1. The lower sleeve 3 is connected to the driving screw 1 by a thread. In this way, the lower sleeve 3 can be driven to move axially along the driving screw 1 by rotating the driving screw 1 (no axial displacement is generated between the upper sleeve 2 and the driving screw 1), so that the upper sleeve 2 and the lower sleeve 3 are close to or separated from each other.

[0033] The support frame includes a plurality of support rods 4 evenly distributed around the driving screw rod 1. In this embodiment, there are three support rods 4. One end of the support rod 4 is hingedly connected to the upper sleeve 2. The other end of the support rod 4 is provided with a roller frame 7. A sliding member 5 is provided on the support rod 4 for sliding connection. In this embodiment, a long strip hole 4.1 extending along the length direction of the support rod 4 is provided on the support rod 4, and the sliding member 5 slides along the long strip hole 4.1.

[0034] The connecting rod 6 corresponds to the supporting rod 4 one by one. One end of the connecting rod 6 is hingedly connected to the lower shaft sleeve 3, and the other end of the connecting rod 6 is rotatably connected to the sliding member 5 on the corresponding supporting rod 4.

[0035] The guide roller assembly 8 comprises a guide roller 8.1 arranged on the roller frame 7. In this embodiment, the guide roller assembly 8 comprises two guide rollers 8.1, and the two guide rollers 8.1 are distributed in a V shape.

[0036] The specific use of the cable construction anti-wear device of this embodiment is as follows: A support frame of a cable construction anti-wear device is placed in the wellhead of the cable well, each support frame is close to the edge of the wellhead, and the orientation of the cable construction anti-wear device is adjusted; then, the upper sleeve 2 and the lower sleeve 3 are driven to move by rotating the drive screw 1 to drive each support frame to unfold, so that the roller frame 7 is pressed against the edge of the wellhead, thereby fixing the cable construction anti-wear device at the wellhead of the cable well. At this time, the guide roller 8.1 on the roller frame 7 is located above the edge of the wellhead. Thereafter, during cable construction, the cable is placed between two guide rollers 8.1 distributed in a V shape, and then the cable pulling operation is performed to avoid friction between the cable and the wellhead of the cable well, and the sliding friction between the cable and the wellhead is changed to rolling friction, thereby effectively reducing the friction on the cable and preventing the outer insulation layer of the cable from being scratched, which affects the safe operation of the cable.

[0037] Specifically, Figure 1 , Figure 2 As shown, a rotary handle 1.1 is also provided on the upper part of the driving screw rod 1. Thus, the driving screw rod 1 can be driven to rotate by the rotary handle 1.1, so as to facilitate actual operation.

[0038] A guide roller assembly 8 is provided on the roller frame 7 of at least one of the support rods 4. In this embodiment, each roller frame 7 is provided with a guide roller assembly 8. The guide roller assembly 8 includes a guide roller 8.1 provided on the roller frame 7. In this embodiment, the guide roller assembly 8 includes two guide rollers 8.1, and the two guide rollers 8.1 are distributed in a V shape.

[0039] Further, such as Figure 1 , Figure 2 As shown, the cross section of the roller frame 7 is inverted L-shaped, and includes an upper support plate 7.1 and a side support plate 7.2 that are vertically distributed. A locking bolt 9 is also provided on the side support plate 7.2. Based on this, in the process of driving the upper sleeve 2 and the lower sleeve 3 to move by rotating the drive screw 1 to drive each support frame to unfold, the side support plate 7.2 of the roller frame 7 is pressed against the edge of the wellhead to fix the cable construction anti-wear device; at the same time, the upper support plate 7.1 of the roller frame 7 is supported above the edge of the wellhead to support the weight of a cable construction anti-wear device, so that a cable construction anti-wear device can be firmly fixed in the wellhead of the cable well to prevent the cable construction anti-wear device from falling or rotating. In addition, after the side support plate 7.2 is pressed against the edge of the wellhead, the roller frame 7 can be further fixed by tightening the locking bolt 9 to ensure that the cable construction anti-wear device does not shake during construction.

[0040] In this embodiment, the locking bolt 9 is a butterfly bolt, so that it is convenient to tighten or loosen the locking bolt 9. Of course, it should be noted that the locking bolt 9 can also be an ordinary hexagonal bolt.

[0041] Further, such as Figure 1 As shown, one end of the support rod 4 is hingedly connected to the upper sleeve 2 through an upper bolt, and the upper bolt is detachably connected to the side wall of the upper sleeve 2. Specifically, the outer wall of the upper sleeve 2 is provided with an upper hinge seat corresponding to the support rod 4, and the upper hinge seat is equipped with a detachable upper bolt. One end of the support rod 4 is provided with a support rod 4 through hole, and the upper bolt passes through the support rod 4 through hole. One end of the connecting rod 6 is hingedly connected to the lower sleeve 3 through a lower bolt, and the lower bolt is detachably connected to the side wall of the lower sleeve 3. Specifically, the outer wall of the lower sleeve 3 is provided with a lower hinge seat corresponding to the connecting rod 6, and the lower hinge seat is equipped with a detachable lower bolt. One end of the connecting rod 6 is provided with a first connecting rod through hole, and the lower bolt passes through the first connecting rod through hole. The sliding member 5 is composed of a sliding bolt, and the sliding bolt passes through the long strip hole 4.1. The other end of the connecting rod 6 is detachably connected to the sliding bolt. Specifically, the other end of the connecting rod 6 is provided with a second connecting rod through hole, and the sliding bolt passes through the second connecting rod through hole. In this way, the support rod 4 and the connecting rod 6 can be disassembled and stored in a tool box for easy carrying. When carrying out the traction construction of the cable, the above components are assembled and a cable construction anti-wear device is fixed on the wellhead of the cable well.

[0042] Further, such as Figure 1 , Figure 2 As shown, the guide roller assembly 8 also includes a base plate 8.2, a base vertical plate 8.3, a lifting plate frame 8.4 and a base block 8.5. The base plate 8.2 is arranged on the roller frame 7. In this embodiment, the base plate 8.2 is installed on the upper support plate 7.1 of the roller frame 7 by bolts. The base vertical plate 8.3 is fixed on the base plate 8.2, and the base vertical plate 8.3 is perpendicular to the base plate 8.2. The base vertical plate 8.3 extends up and down. The lifting plate frame 8.4 rises and falls along the base vertical plate 8.3. The lifting plate frame 8.4 and the base vertical plate 8.3 are locked and fixed by the plate frame bolts 8.6. The base block 8.5 is arranged on the lifting plate frame 8.4. Two guide rollers 8.1 distributed in a V shape are arranged on the base block 8.5. In this way, the height of the lifting plate frame 8.4 can be adjusted according to actual needs, and then the height of the two guide rollers 8.1 distributed in a V shape can be adjusted to meet the needs of cable pulling operations.

[0043] In this embodiment, the lifting plate frame 8.4 is provided with vertical strip holes extending up and down, and the plate frame bolts 8.6 are threadedly connected to the base vertical plate 8.3, and the plate frame bolts 8.6 pass through the vertical strip holes. In this way, after the plate frame bolts 8.6 are loosened, the height of the lifting plate frame 8.4 can be conveniently adjusted; after the plate frame bolts 8.6 are locked, the lifting plate frame 8.4 can be stably fixed, and the operation is convenient.

[0044] Specific embodiment three, as Figure 1 , Figure 2As shown, a cable construction anti-wear device includes a driving screw 1, an upper sleeve 2 and a lower sleeve 3, a support frame, a connecting rod 6 and a guide roller assembly 8.

[0045] The upper sleeve 2 and the lower sleeve 3 are sequentially distributed on the driving screw 1 along the axial direction of the driving screw 1. At least one of the upper sleeve 2 and the lower sleeve 3 is connected to the driving screw 1 by a thread. In this embodiment, the upper sleeve 2 is connected to the driving screw 1 by a thread. The lower sleeve 3 is coaxially sleeved on the driving screw 1, and the lower sleeve 3 is rotatably connected to the driving screw 1. The lower sleeve 3 and the driving screw 1 cannot move relative to each other along the axial direction of the driving screw 1. In this way, the upper sleeve 2 can be driven to move axially along the driving screw 1 by rotating the driving screw 1 (no axial displacement is generated between the lower sleeve 3 and the driving screw 1), so that the upper sleeve 2 and the lower sleeve 3 are close to or separated from each other, thereby driving each support frame to expand or retract.

[0046] The support frame includes a plurality of support rods 4 evenly distributed around the driving screw rod 1. In this embodiment, there are three support rods 4. One end of the support rod 4 is hingedly connected to the upper sleeve 2. The other end of the support rod 4 is provided with a roller frame 7. A sliding member 5 is provided on the support rod 4 for sliding connection. In this embodiment, a long strip hole 4.1 extending along the length direction of the support rod 4 is provided on the support rod 4, and the sliding member 5 slides along the long strip hole 4.1.

[0047] The connecting rod 6 corresponds to the supporting rod 4 one by one. One end of the connecting rod 6 is hingedly connected to the lower shaft sleeve 3, and the other end of the connecting rod 6 is rotatably connected to the sliding member 5 on the corresponding supporting rod 4.

[0048] The guide roller assembly 8 comprises a guide roller 8.1 arranged on the roller frame 7. In this embodiment, the guide roller assembly 8 comprises two guide rollers 8.1, and the two guide rollers 8.1 are distributed in a V shape.

[0049] The specific use of the cable construction anti-wear device of this embodiment is as follows: A support frame of a cable construction anti-wear device is placed in the wellhead of the cable well, each support frame is close to the edge of the wellhead, and the orientation of the cable construction anti-wear device is adjusted; then, the upper sleeve 2 and the lower sleeve 3 are driven to move by rotating the drive screw 1 to drive each support frame to unfold, so that the roller frame 7 is pressed against the edge of the wellhead, thereby fixing the cable construction anti-wear device at the wellhead of the cable well. At this time, the guide roller 8.1 on the roller frame 7 is located above the edge of the wellhead. Thereafter, during cable construction, the cable is placed between two guide rollers 8.1 distributed in a V shape, and then the cable pulling operation is performed to avoid friction between the cable and the wellhead of the cable well, and the sliding friction between the cable and the wellhead is changed to rolling friction, thereby effectively reducing the friction on the cable and preventing the outer insulation layer of the cable from being scratched, which affects the safe operation of the cable.

[0050] Specifically, Figure 1 , Figure 2 As shown, a rotary handle 1.1 is also provided on the upper part of the driving screw rod 1. Thus, the driving screw rod 1 can be driven to rotate by the rotary handle 1.1, so as to facilitate actual operation.

[0051] A guide roller assembly 8 is provided on the roller frame 7 of at least one of the support rods 4. In this embodiment, each roller frame 7 is provided with a guide roller assembly 8. The guide roller assembly 8 includes a guide roller 8.1 provided on the roller frame 7. In this embodiment, the guide roller assembly 8 includes two guide rollers 8.1, and the two guide rollers 8.1 are distributed in a V shape.

[0052] Further, such as Figure 1 , Figure 2 As shown, the cross section of the roller frame 7 is inverted L-shaped, and includes an upper support plate 7.1 and a side support plate 7.2 that are vertically distributed. A locking bolt 9 is also provided on the side support plate 7.2. Based on this, in the process of driving the upper sleeve 2 and the lower sleeve 3 to move by rotating the drive screw 1 to drive each support frame to unfold, the side support plate 7.2 of the roller frame 7 is pressed against the edge of the wellhead to fix the cable construction anti-wear device; at the same time, the upper support plate 7.1 of the roller frame 7 is supported above the edge of the wellhead to support the weight of a cable construction anti-wear device, so that a cable construction anti-wear device can be firmly fixed in the wellhead of the cable well to prevent the cable construction anti-wear device from falling or rotating. In addition, after the side support plate 7.2 is pressed against the edge of the wellhead, the roller frame 7 can be further fixed by tightening the locking bolt 9 to ensure that the cable construction anti-wear device does not shake during construction.

[0053] In this embodiment, the locking bolt 9 is a butterfly bolt, so that it is convenient to tighten or loosen the locking bolt 9. Of course, it should be noted that the locking bolt 9 can also be an ordinary hexagonal bolt.

[0054] Further, such as Figure 1As shown, one end of the support rod 4 is hingedly connected to the upper sleeve 2 through an upper bolt, and the upper bolt is detachably connected to the side wall of the upper sleeve 2. Specifically, the outer wall of the upper sleeve 2 is provided with an upper hinge seat corresponding to the support rod 4, and the upper hinge seat is equipped with a detachable upper bolt. One end of the support rod 4 is provided with a support rod 4 through hole, and the upper bolt passes through the support rod 4 through hole. One end of the connecting rod 6 is hingedly connected to the lower sleeve 3 through a lower bolt, and the lower bolt is detachably connected to the side wall of the lower sleeve 3. Specifically, the outer wall of the lower sleeve 3 is provided with a lower hinge seat corresponding to the connecting rod 6, and the lower hinge seat is equipped with a detachable lower bolt. One end of the connecting rod 6 is provided with a first connecting rod through hole, and the lower bolt passes through the first connecting rod through hole. The sliding member 5 is composed of a sliding bolt, and the sliding bolt passes through the long strip hole 4.1. The other end of the connecting rod 6 is detachably connected to the sliding bolt. Specifically, the other end of the connecting rod 6 is provided with a second connecting rod through hole, and the sliding bolt passes through the second connecting rod through hole. In this way, the support rod 4 and the connecting rod 6 can be disassembled and stored in a tool box for easy carrying. When carrying out the traction construction of the cable, the above components are assembled and a cable construction anti-wear device is fixed on the wellhead of the cable well.

[0055] Further, such as Figure 1 , Figure 2 As shown, the guide roller assembly 8 also includes a base plate 8.2, a base vertical plate 8.3, a lifting plate frame 8.4 and a base block 8.5. The base plate 8.2 is arranged on the roller frame 7. In this embodiment, the base plate 8.2 is installed on the upper support plate 7.1 of the roller frame 7 by bolts. The base vertical plate 8.3 is fixed on the base plate 8.2, and the base vertical plate 8.3 is perpendicular to the base plate 8.2. The base vertical plate 8.3 extends up and down. The lifting plate frame 8.4 rises and falls along the base vertical plate 8.3. The lifting plate frame 8.4 and the base vertical plate 8.3 are locked and fixed by the plate frame bolts 8.6. The base block 8.5 is arranged on the lifting plate frame 8.4. Two guide rollers 8.1 distributed in a V shape are arranged on the base block 8.5. In this way, the height of the lifting plate frame 8.4 can be adjusted according to actual needs, and then the height of the two guide rollers 8.1 distributed in a V shape can be adjusted to meet the needs of cable pulling operations.

[0056] In this embodiment, the lifting plate frame 8.4 is provided with vertical strip holes extending up and down, and the plate frame bolts 8.6 are threadedly connected to the base vertical plate 8.3, and the plate frame bolts 8.6 pass through the vertical strip holes. In this way, after the plate frame bolts 8.6 are loosened, the height of the lifting plate frame 8.4 can be conveniently adjusted; after the plate frame bolts 8.6 are locked, the lifting plate frame 8.4 can be stably fixed, and the operation is convenient.

[0057] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any way. Any simple modification, change and equivalent transformation made to the above embodiment based on the technical essence of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A cable construction anti-wear device, characterized in that: include: Drive screw; The upper sleeve and the lower sleeve are sequentially distributed on the driving screw along the axial direction of the driving screw, and at least one of the upper sleeve and the lower sleeve is connected to the driving screw through a thread; The support frame comprises a plurality of support rods which are sequentially distributed around the driving screw rod in the circumferential direction, one end of the support rod is hingedly connected to the upper sleeve, the other end of the support rod is provided with a roller frame, and a sliding member which is slidably connected is provided on the support rod; A connecting rod, corresponding to each supporting rod one by one, one end of the connecting rod is hingedly connected to the lower shaft sleeve, and the other end of the connecting rod is rotatably connected to a sliding member on the corresponding supporting rod; The guide roller assembly comprises a guide roller arranged on a roller frame.

2. A cable construction anti-wear device according to claim 1, characterized in that: The driving screw comprises an upper and a lower threaded section with opposite thread directions, the upper sleeve is connected to one of the threaded sections via threads, and the lower sleeve is connected to the other threaded section via threads.

3. A cable construction anti-wear device according to claim 1, characterized in that: The upper sleeve is coaxially sleeved on the driving screw, and the upper sleeve is rotationally connected to the driving screw, and the lower sleeve is threadedly connected to the driving screw.

4. A cable construction anti-wear device according to claim 1, characterized in that: The upper sleeve is connected to the driving screw rod through threads, the lower sleeve is coaxially sleeved on the driving screw rod, and the lower sleeve is rotationally connected to the driving screw rod.

5. A cable construction anti-wear device according to claim 1, 2, 3 or 4, characterized in that: The guide roller assembly comprises two guide rollers which are distributed in a V shape.

6. A cable construction anti-wear device according to claim 5, characterized in that: The guide roller assembly also includes: A base plate is arranged on the roller frame; The base vertical plate is fixed on the base plate, and the base vertical plate is extended and distributed upward and downward; The lifting plate frame is lifted up and down along the vertical plate of the base, and the lifting plate frame and the vertical plate of the base are locked and fixed by plate frame bolts; The base block is arranged on the lifting plate frame, and two guide rollers distributed in a V shape are arranged on the base block.

7. A cable construction anti-wear device according to claim 6, characterized in that: The lifting plate frame is provided with vertical strip holes extending up and down, the plate frame bolts are threadedly connected with the vertical plates of the base, and the plate frame bolts pass through the vertical strip holes.

8. A cable construction anti-wear device according to claim 1, 2, 3 or 4, characterized in that: The cross section of the roller frame is in an inverted L shape, and comprises an upper support plate and a side support plate which are vertically distributed; the side support plate is also provided with a locking bolt.

9. A cable construction anti-wear device according to claim 1, 2, 3 or 4, characterized in that: A rotating handle is also provided on the upper part of the driving screw.

10. A cable construction anti-wear device according to claim 1, 2, 3 or 4, characterized in that: One end of the support rod is hingedly connected to the upper sleeve by an upper bolt, and the upper bolt is detachably connected to the side wall of the upper sleeve; one end of the connecting rod is hingedly connected to the lower sleeve by a lower bolt, and the lower bolt is detachably connected to the side wall of the lower sleeve; the sliding part is composed of a sliding bolt, and the other end of the connecting rod is detachably connected to the sliding bolt.

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