PE pipeline clamping device

Abstract

The utility model relates to the field of PE pipeline clamping and blocking, and discloses a PE pipeline clamping device which comprises a handheld supporting frame, a two-way threaded rod rotationally installed on the supporting frame and a guide sliding frame fixedly installed on the supporting frame, and two movable supports are symmetrically connected to the guide sliding frame in a sliding mode along the center line of the guide sliding frame. The two-way threaded rod is sleeved with the movable support in a threaded mode, and a clamping base used for clamping and blocking the PE pipeline is fixedly installed on the movable support. The supporting frame is provided with a power assembly for controlling the bidirectional threaded rod to rotate, and the supporting frame is further provided with a direction control assembly for limiting the rotating direction of the power assembly. The clamping device is provided with the direction control assembly to limit the rotating direction of the power assembly, the clamping base is kept to stably clamp the PE pipeline, and the stability of pipeline clamping and blocking is improved.

Description

Technical Field

[0001] The utility model relates to the field of PE pipe clamping and blocking, in particular to a PE pipe clamping device. Background Art

[0002] When PE pipelines are being repaired, it is necessary to block the medium circulating inside the pipeline maintenance area. The clamping device is used to clamp and pressurize both sides of the PE pipeline so that the channel for transmitting the medium inside the pipeline is in a closed state. This prevents the internally transmitted medium from overflowing during the pipeline maintenance process, thereby affecting the safety of the construction workers. However, the pipeline will generate a certain reverse force during the clamping and blocking process, which will interfere with the blocking construction.

[0003] For example, Chinese utility model patent CN215763962U discloses a polyethylene pipe flattening and blocking device, which includes a loading frame, a screw, a stop nut, a rotary handle, an upper pressure rod, a lower pressure rod, an upper fixing plate, and a side fixing plate. The screw is connected to the screw hole of the upper pressure rod through the upper screw hole of the loading frame, and the side fixing plate is connected to the upper and lower pressure rods by bolts. The side fixing plate slides up and down along the side grooves of the loading frame. The pipe is placed between the upper and lower pressure rods and is perpendicular to the upper and lower pressure rods. When the diameter of the pipe to be flattened increases, the side fixing plate is simply removed and replaced with the upper and lower pressure rods with larger diameters. The side fixing plate is then screwed in again to flatten the large-diameter pipe. This structure rotates the rotary handle through the drive device, and the control screw drives the upper pressure rod to move downward to flatten the pipe. However, during the clamping and blocking process, the pipe will generate a reaction force on the clamping structure. The clamping structure will feed back the reverse force to the drive device, causing the drive device to reverse and affect the fastening force of the clamping assembly on the pipe, resulting in incomplete pipe blocking and affecting the effect of blocking the medium in the pipe. In addition, PE pipes are very sensitive to temperature. The hardness of PE pipes increases in low temperature environments, and cracks are prone to occur during clamping and blocking, affecting the subsequent normal use of the pipe at that location. Utility Model Content

[0004] 1. Technical Problems to be Solved

[0005] The present invention is aimed at the above-mentioned defects existing in the prior art and specially proposes a PE pipe clamping device, which limits the rotation direction of the power component by a control component, reduces the influence of the reverse force during the pipe clamping and blocking process, and solves the problem that the clamping structure feeds back the reverse force to the drive device, causing the drive device to reverse and affecting the fastening force of the clamping component on the pipe, resulting in incomplete pipe blocking and affecting the blocking effect of the medium in the pipe.

[0006] 2. Technical Solution

[0007] In order to solve the above technical problems, the utility model provides a PE pipe clamping device, including a handheld support frame, the PE pipe clamping device also includes a bidirectional threaded rod rotatably mounted on the support frame, and a guide slide frame fixedly mounted on the support frame. The guide slide frame is symmetrically and slidingly connected to two movable brackets along its own center line. The movable bracket is threadedly sleeved on the bidirectional threaded rod, and a clamping seat for clamping and blocking the PE pipe is fixedly mounted on the movable bracket; a power component for controlling the rotation of the bidirectional threaded rod is provided on the support frame, and a direction control component for limiting the rotation direction of the power component is also provided on the support frame.

[0008] Preferably, the power assembly includes a protective cover fixedly mounted on the support frame, a driving bevel gear is rotatably mounted in the protective cover, a driven bevel gear is meshedly connected to the driving bevel gear, and the driven bevel gear is coaxially fixedly sleeved on the bidirectional threaded rod.

[0009] Preferably, a hand wheel is fixedly connected to the active bevel gear, and the hand wheel is rotatably mounted on the upper surface of the support frame.

[0010] Preferably, the direction control assembly includes a ratchet coaxially fixed on the active bevel gear, and the ratchet is provided with a plurality of oblique grooves along its own axis circumference, and a clamping block is clamped in the oblique groove along the axis direction of the bidirectional threaded rod, and the end face of the clamping block is inclined.

[0011] Preferably, a sliding groove is provided on the support frame, a shift rod is slidably connected in the sliding groove, a positioning column is fixedly connected to the shift rod, the positioning column is slidably connected to the protective cover, and the positioning column is fixedly connected to the blocking block; a sleeve is fixedly installed in the protective cover, the positioning column is slidably connected to the sleeve, and a positioning spring is connected between the positioning column and the sleeve.

[0012] Preferably, a pressure sensor is fixedly mounted on the clamping base, a heater is fixedly mounted on the clamping base, and a channel component for controlling heat transfer is provided on the clamping base.

[0013] Preferably, the channel assembly includes an inner heat conduction channel opened inside the clamp seat and connected to the heater, a plurality of outer heat conduction channels are opened at equal intervals on the surface of the clamp seat, and heat conduction holes are opened between the outer heat conduction channels and the inner heat conduction channels.

[0014] 3. Beneficial Effects

[0015] Compared with the prior art, the present invention limits the steering of the power component through the control component, and controls the relative movement of the two clamping seats to clamp the PE pipe through the power component. The greater the clamping force applied, the greater the reaction force generated by the PE pipe. The active bevel gear in the power component is coaxially fixedly connected to the ratchet in the control component. A block is clamped on the outside of the ratchet, and the block limits the ratchet to only rotate in one direction, thereby reducing the influence of the reaction force of the PE pipe and keeping the clamping seat stably clamped to block the PE pipe.

[0016] Furthermore, a heater and a channel assembly are provided on the clamping seat. According to the force applied to clamp the PE pipe detected by the pressure sensor, the PE pipe is locally heated by the heater and the channel assembly to reduce the hardness of the PE pipe, thereby avoiding cracks in the pipe wall caused by excessive clamping force, which affects the subsequent use of the pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The figure is a schematic diagram of the three-dimensional structure of a support frame of a PE pipe clamping device.

[0018] Figure 2 The diagram is a three-dimensional structural diagram of a handwheel of a PE pipe clamping device.

[0019] Figure 3 It is a schematic diagram of the three-dimensional structure of a bidirectional threaded rod of a PE pipe clamping device.

[0020] Figure 4 The diagram is a schematic diagram of the three-dimensional structure of a ratchet of a PE pipe clamping device.

[0021] Figure 5 The figure is a schematic diagram of the sleeve cross-section structure of a PE pipe clamping device.

[0022] Figure 6 The figure is a schematic diagram of the three-dimensional structure of a mobile bracket of a PE pipe clamping device.

[0023] Figure 7 The figure is a schematic diagram of the three-dimensional structure of a clamping seat of a PE pipe clamping device.

[0024] Figure 8 It is a schematic diagram of the three-dimensional structure of the external heat conduction channel of a PE pipe clamping device.

[0025] In the picture:

[0026] 1 is a support frame; 21 is a bidirectional threaded rod; 22 is a guide slide frame; 23 is a movable bracket; 24 is a clamping seat; 3 is a power assembly; 31 is a protective cover; 32 is an active bevel gear; 33 is a driven bevel gear; 4 is a handwheel; 5 is a control assembly; 51 is a ratchet; 52 is a bevel groove; 53 is a block; 54 is a slide groove; 55 is a shift rod; 56 is a positioning column; 57 is a sleeve; 58 is a positioning spring; 61 is a pressure sensor; 62 is a heater; 63 is a channel assembly; 631 is an inner heat conduction channel; 632 is a heat conduction hole; 633 is an outer heat conduction channel. DETAILED DESCRIPTION

[0027] The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0028] Example 1:

[0029] like Figures 1-3 As shown, the PE pipe clamping device of this embodiment includes a handheld support frame 1, a bidirectional threaded rod 21 rotatably mounted on the support frame 1, and a guide slide frame 22 fixedly mounted on the support frame 1. Two movable brackets 23 are symmetrically connected to the guide slide frame 22 along its centerline. The movable brackets 23 are threadedly mounted on the bidirectional threaded rod 21 and fixedly mounted on the movable brackets 23 to clamp and block the PE pipe. The support frame 1 is equipped with a power assembly 3 for controlling the rotation of the bidirectional threaded rod 21 and a direction control assembly 5 for limiting the rotation direction of the power assembly 3.

[0030] The support frame 1 is erected on the outside of the PE pipe, and the bidirectional threaded rod 21 is driven to rotate by the power component 3. The bidirectional threaded rod 21 controls the relative movement of two movable brackets 23 sleeved on the outside through thread transmission. The movable bracket 23 controls the relative movement of two clamping seats 24 to clamp the outside of the PE pipe, blocking the flow of medium in the PE pipe so that local areas of the PE pipe can be repaired.

[0031] In the process of clamping and blocking the PE pipe, the greater the clamping force applied to the PE pipe, the greater the reverse force generated. The reverse force is transmitted to the clamping seat 24, the movable bracket 23 and the power assembly 3. The steering of the power assembly 3 is restricted by the control assembly 5, which can reduce the influence of the reverse force on the power assembly 3 and maintain the stability of the clamping seat 24 clamped on the outside of the PE pipe.

[0032] like Figure 2 and Figure 3 As shown, the power assembly 3 includes a protective cover 31 fixedly mounted on the support frame 1, a driving bevel gear 32 is rotatably mounted in the protective cover 31, and a driven bevel gear 33 is meshedly connected to the driving bevel gear 32. The driven bevel gear 33 is coaxially fixedly sleeved on the bidirectional threaded rod 21 to control the rotation of the driving bevel gear 32. The driving bevel gear 32 controls the rotation of the driven bevel gear 33 through meshing transmission. The driven bevel gear 33 is fixedly sleeved on the outside of the bidirectional threaded rod 21 to achieve the purpose of driving the bidirectional threaded rod 21 to rotate.

[0033] The driving bevel gear 32 is fixedly connected with a handwheel 4, which is rotatably mounted on the upper surface of the support frame 1. The handwheel 4 is vertically mounted on the support frame 1, which is convenient for manual control of the rotation of the handwheel 4. When the handwheel 4 rotates, the driving bevel gear 32 is driven to rotate synchronously, thereby driving the driving bevel gear 32 to rotate.

[0034] like Figures 1-4As shown, the direction control assembly 5 includes a ratchet 51 coaxially fixed to the active bevel gear 32. The ratchet 51 has a plurality of bevel grooves 52 formed along its own axis. A block 53 is clamped in the bevel grooves 52 along the axis of the bidirectional threaded rod 21. The end surface of the block 53 is inclined. The rotation of the active bevel gear 32 drives the ratchet 51 to rotate synchronously. When the ratchet 51 rotates, the inclined surface of the side bevel grooves 52 contacts the inclined surface of the block 53, pushing the block 53 to move laterally. The block 53 moves to avoid the ratchet 51 and does not affect the rotation of the ratchet 51. When the active bevel gear 32 and the ratchet 51 rotate in opposite directions, the bevel grooves 52 on the side of the ratchet 51 and the block 53 form a locking limit structure. The locked block 53 restricts the rotation of the ratchet 51, so that when the block 53 is engaged, the ratchet 51 can only rotate in one direction.

[0035] like Figures 3-5 As shown, a slide groove 54 is provided on the support frame 1, and a shift rod 55 is slidably connected in the slide groove 54, and a positioning column 56 is fixedly connected to the shift rod 55. The positioning column 56 is slidably connected to the protective cover 31, and the positioning column 56 is fixedly connected to the block 53; a sleeve 57 is fixedly installed in the protective cover 31, and the positioning column 56 is slidably connected to the sleeve 57, and a positioning spring 58 is connected between the positioning column 56 and the sleeve 57.

[0036] When the ratchet 51 rotates and pushes the inclined surface of the inclined groove 52 to push the block 53 to move horizontally, the block 53 drives the positioning column 56 to move synchronously, and the positioning column 56 compresses the positioning spring 58. When the clamping device is removed from the PE pipe, it is necessary to control the active bevel gear 32 and the ratchet 51 to rotate in the opposite direction. At this time, the push rod 55 is pushed to slide in the slide groove 54, and the push rod 55 drives the positioning column 56 to move synchronously. The positioning column 56 controls the block 53 to move away from the ratchet 51. The ratchet 51 is in a loose state at this time, and the handwheel 4 is rotated in the opposite direction to control the ratchet 51 and the active bevel gear 32 to rotate in the opposite direction.

[0037] Working principle: When a PE pipe fails and needs to be repaired, the support frame 1 of the clamping device is set up on the outside of the PE pipe, so that the two sets of clamping seats 24 correspond to the positions on both sides of the PE pipe respectively. The control handwheel 4 rotates to drive the active bevel gear 32 to rotate. The active bevel gear 32 controls the rotation of the driven bevel gear 33 through the meshing structure. The driven bevel gear 33 is fixedly sleeved on the outside of the bidirectional threaded rod 21 to drive it to rotate synchronously. At this time, the two movable brackets 23 threaded on both sides of the bidirectional threaded rod 21 move relative to each other, and the movable brackets 23 drive the two clamping seats 24 to move relative to each other and clamp on the outside of the PE pipe. The movement of the clamping seat 24 applies pressure to the outside of the PE pipe wall, blocking the flow of the medium inside the PE pipe.

[0038] During the clamping process of the PE pipe, a moving reaction force will be generated. The reaction force is fed back to the power component 3, causing the active bevel gear 32 to rotate in the opposite direction. The active bevel gear 32 is connected to the control component 5 to limit its rotation direction. The active bevel gear 32 is coaxially fixedly connected to the ratchet 51. A block 53 is clamped in the inclined groove 52 outside the ratchet 51. When the ratchet 51 rotates forward, the inclined surface of the inclined groove 52 pushes the block 53 to move laterally. When the ratchet 51 rotates reversely, it engages with the block 53 to limit its rotation. The design of the block 53 makes the ratchet 51 only rotate in one direction, thereby reducing the interference of the reverse force generated when clamping the PE pipe.

[0039] When the clamping device needs to be disassembled, the lever 55 is controlled to slide in the slide groove 54, and the lever 55 drives the positioning column 56 and the block 53 to move synchronously, so that the block 53 moves in the direction away from the ratchet 51. At this time, the ratchet 51 is disconnected from the block 53 and is no longer subject to resistance when rotating. The active bevel gear 32 and the ratchet 51 can be controlled to rotate in the opposite direction by the handwheel 4. The bidirectional threaded rod 21 is controlled to rotate in the opposite direction by the power assembly 3, so that the movable bracket 23 and the clamp seat 24 move in the opposite direction, and the clamp seat 24 moves away from the outer wall of the PE pipe, so that the clamping device can be disassembled from the outside of the PE pipe.

[0040] Example 2:

[0041] Compared with Example 1, Figures 6-8 As shown, a pressure sensor 61 is fixedly mounted on the clamping base 24, as is a heater 62. Furthermore, a channel assembly 63 for controlling heat transfer is provided on the clamping base 24. When the clamping base 24 is controlled to move and clamp the PE pipe, the pressure sensor 61 contacts the surface of the PE pipe to detect the clamping force. Excessive clamping force can cause cracks in the PE pipe wall. Heater 62 generates heat, which is then transferred to the clamped portion of the PE pipe via channel assembly 63. After heating, the hardness of the PE pipe decreases, reducing the required clamping force and preventing cracks on the clamped surface of the PE pipe.

[0042] The channel assembly 63 includes an inner heat-conducting channel 631, which is located within the clamping base 24 and is connected to the heater 62. Multiple outer heat-conducting channels 633 are evenly spaced on the surface of the clamping base 24. Heat-conducting holes 632 are defined between the outer heat-conducting channels 633 and the inner heat-conducting channels 631. Heat generated by the heater 62 flows into the inner heat-conducting channels 631. The heat in the inner heat-conducting channels 631 is evenly transferred to the outer heat-conducting channels 633 through the heat-conducting holes 632. The heat in the outer heat-conducting channels 633 is evenly distributed across the PE pipe, reducing its surface hardness.

[0043] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A PE pipe clamping device, characterized by: The PE pipe clamping device comprises a handheld support frame (1), the PE pipe clamping device further comprising a bidirectional threaded rod (21) rotatably mounted on the support frame (1), and a guide slide frame (22) fixedly mounted on the support frame (1); two movable brackets (23) are symmetrically slidably connected to the guide slide frame (22) along its own center line; the movable brackets (23) are threadedly sleeved on the bidirectional threaded rod (21); and a clamping seat (24) for clamping and blocking the PE pipe is fixedly mounted on the movable bracket (23); A power assembly (3) for controlling the rotation of a bidirectional threaded rod (21) is provided on the support frame (1), and a direction control assembly (5) for limiting the rotation direction of the power assembly (3) is also provided on the support frame (1).

2. A PE pipe clamping device according to claim 1, characterized in that: The power assembly (3) comprises a protective cover (31) fixedly mounted on the support frame (1), a driving bevel gear (32) being rotatably mounted in the protective cover (31), a driven bevel gear (33) being meshedly connected to the driving bevel gear (32), and the driven bevel gear (33) being coaxially fixedly sleeved on the bidirectional threaded rod (21).

3. A PE pipe clamping device according to claim 2, characterized in that: A hand wheel (4) is fixedly connected to the driving bevel gear (32), and the hand wheel (4) is rotatably mounted on the upper surface of the support frame (1).

4. A PE pipe clamping device according to claim 1, characterized in that: The control assembly (5) comprises a ratchet (51) coaxially fixed on the active bevel gear (32); a plurality of oblique grooves (52) are provided on the ratchet (51) along its own axis; a clamping block (53) is clamped in the oblique grooves (52) along the axis of the bidirectional threaded rod (21); and the end surface of the clamping block (53) is inclined.

5. A PE pipe clamping device according to claim 4, characterized in that: The support frame (1) is provided with a slide groove (54), a shifting rod (55) is slidably connected in the slide groove (54), a positioning column (56) is fixedly connected to the shifting rod (55), the positioning column (56) is slidably connected to the protective cover (31), and the positioning column (56) is fixedly connected to the block (53); A sleeve (57) is fixedly installed in the protective cover (31), a positioning column (56) is slidably connected to the sleeve (57), and a positioning spring (58) is connected between the positioning column (56) and the sleeve (57).

6. A PE pipe clamping device according to claim 1, characterized in that: A pressure sensor (61) is fixedly mounted on the clamping seat (24), a heater (62) is fixedly mounted on the clamping seat (24), and a channel component (63) for controlling heat transfer is provided on the clamping seat (24).

7. A PE pipe clamping device according to claim 6, characterized in that: The channel assembly (63) includes an inner heat-conducting channel (631) opened inside the clamping seat (24) and connected to the heater (62); a plurality of outer heat-conducting channels (633) are opened at equal intervals on the surface of the clamping seat (24); and a heat-conducting hole (632) is opened between the outer heat-conducting channels (633) and the inner heat-conducting channels (631).

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