Energy-saving lighting device capable of multi-angle adjustment

Abstract

The present invention discloses an energy-saving lighting device that can be adjusted at multiple angles, belonging to the field of road lighting equipment. The device includes a mounting base, the outer side of the mounting base is provided with a closing groove, the closing groove is divided into three levels of height: upper, middle and lower, each of the closing grooves is interspersed with a closing plug, the inner end of the closing plug is provided with a locking block, the outer end of the closing plug is provided with a tightening groove, the interior of the tightening groove is filled with a steel ring, the interior of the locking block is filled with a street light pole, the top of the street light pole is provided with a debugging pole assembly, and the bottom of the mounting base is provided with a ground pile assembly. When the present invention is in use, the assembled street light pole is placed in the middle of the locking block. When the street light pillar needs to change its angle, the steel ring is taken out, and then the closing plugs of the circular array will be loosened. After the street light pole adjusts its angle, the steel ring is inserted back to lock the closing plug, thereby achieving the effect of conveniently debugging the street light angle.

Description

Technical Field

[0001] The present invention relates to the field of road lighting equipment, and in particular to an energy-saving lighting device that can be adjusted at multiple angles. Background Art

[0002] With the development of industrial technology, modern road lighting equipment technology has become more and more sophisticated. Frequent construction is required in parks or paths, and the street lights in parks or paths need to be frequently adjusted. In the past, street light equipment was fixed, and each time the position or angle of the street light was adjusted, the street light needed to be dug out and reinstalled.

[0003] Secondly, street lamps require brackets every time they are repaired. Workers must stand on the brackets to maintain the lamps. If the brackets are too heavy, they are difficult to carry, which reduces the maintenance efficiency of the workers. Summary of the Invention

[0004] The object of the present invention is to provide an energy-saving lighting device that can be adjusted at multiple angles. When the device is in use, the assembled street light pole is placed in the middle of the snap-fit ​​block, and the snap-fit ​​blocks at three height levels form a hexagon, an octagon, and a decagon. The hexagonal street light pole can be replaced with an octagonal or a decagonal prism, and the interior of the mounting base can only accommodate three types of street light pillars. When the angle of the street light pillar needs to be changed, the steel ring is taken out, and the closing plug-in blocks of the circular array will be loosened. After the angle of the street light pole is adjusted, the steel ring is inserted back to lock the closing plug-in blocks, thereby achieving the effect of conveniently debugging the street light angle, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: an energy-saving lighting device that can be adjusted at multiple angles, comprising a mounting base, wherein the outer side of the mounting base is provided with a closing groove, and the closing groove is divided into three levels: upper, middle and lower. The upper layer is provided with six closing grooves in a circular array, the middle layer is provided with eight closing grooves in a circular array, and the lower layer is provided with ten closing grooves in a circular array, each of the closing grooves is interspersed with a closing plug, and the inner end of the closing plug is provided with a locking block, the upper locking blocks are combined to form a hexagon, the middle locking blocks are combined to form an octagon, and the lower locking blocks are combined to form a decagon, the diameter of the octagon is smaller than that of the hexagon, and the diameter of the decagon is smaller than that of the octagon, the outer end of the closing plug is provided with a tightening groove, a steel ring is filled inside the tightening groove, the interior of the locking block is filled with a street lamp pole, the top of the street lamp pole is provided with a debugging lamp pole assembly, and the bottom of the mounting base is provided with a ground pile assembly.

[0006] Furthermore, the debugging lamp pole assembly includes an end plate at the top of the street light pole, a fixed vertical pole and a hinge block are provided at the top of the end plate, a movable lamp pole is provided at the top of the hinge block, a torsion rod rotatably connected to the inside of the hinge block is provided at the bottom of the movable lamp pole, a locking assembly is provided at the top of the fixed vertical pole and the movable lamp pole, and a pulling assembly is provided on the side of the fixed vertical pole facing away from the movable lamp pole.

[0007] Furthermore, the pulling assembly includes a winding shaft seat on the side wall of the fixed vertical pole, and a winding rod is rotatably provided on one side of the winding shaft seat. The outer side of the winding rod pulls out the wire rope, and the interior of the fixed vertical pole is provided with a threading channel matching the wire rope, and threading holes are provided above and below the threading channel. The wire rope passes through the interior of the fixed vertical pole and is connected to the top of the movable lamp pole. A pin assembly is provided on the winding rod.

[0008] Furthermore, the pin assembly includes a pin hole on the winding rod, a docking lock hole matching the pin hole is provided on the side wall of the fixed vertical pole, the docking lock hole and the pin hole are connected by a pin rod, and a detachable crank is provided on the axis of the winding rod.

[0009] Furthermore, the locking assembly includes a receiving groove for fixing the top end of the vertical pole, the top end of the movable lamp pole is inserted into the interior of the receiving groove, and a layer of rubber pad is laid on the inner side wall of the receiving groove.

[0010] Furthermore, the ground pile assembly includes a load-bearing cylinder at the bottom end of the mounting base, the load-bearing cylinder is inserted into the square pit on the concrete ground pile, a grounding plate is provided in the middle of the load-bearing cylinder, the grounding plate covers the concrete ground pile, and four telescopic rectangular grooves are provided at the bottom end of the load-bearing cylinder, a clamping plate is slidably inserted inside the telescopic rectangular groove, and a buckle groove matching the clamping plate is provided at the bottom of the concrete ground pile square pit, and the clamping plate is connected to the retractable assembly.

[0011] Furthermore, the retraction and extension assembly includes a square tube sleeve in the center of the load-bearing cylinder, an expansion vertical rod is slidably installed in the middle of the square tube sleeve, a pressure conical disk is provided at the bottom end of the expansion vertical rod, and an inclined plate is provided at the inner end of the clamping plate. The pressure conical disk fits on the side wall of the inclined plate, and a return spring is provided at the bottom of the clamping plate. One end of the return spring is fixedly connected to the side wall of the clamping plate, and the other end of the return spring is fixedly connected to the inner wall of the load-bearing cylinder. A pressure assembly is provided at the top of the expansion vertical rod.

[0012] Furthermore, the pressure assembly includes a push-down block at the top of the expansion vertical rod, and a cover plate is also provided on the side wall of the load-bearing cylinder. A threaded hole is provided in the middle of the cover plate, a threaded rod is provided inside the threaded hole, a steel ball is provided at the inner end of the threaded rod, the steel ball contacts the slope surface of the push-down block, and a torque handle is provided at the outer end of the threaded rod.

[0013] In summary, due to the adoption of the above technology, the beneficial effects of the present invention are:

[0014] Firstly, when the device is in use, the assembled street light pole is placed in the middle of the snap-fit ​​block, and the snap-fit ​​blocks at three height levels form a hexagon, an octagon, and a decagon. The hexagonal street light pole can be replaced with an octagonal or a decagonal prism, and the interior of the mounting base can only accommodate three types of street light pillars. When the angle of the street light pillar needs to be changed, the steel ring is taken out, and the closing plug-in of the circular array will be loosened. After the angle of the street light pole is adjusted, the steel ring is inserted back to lock the closing plug-in, thereby achieving the effect of conveniently debugging the street light angle.

[0015] Secondly, when the staff needs to debug the lamp, they pull out the pin rod and then rotate the reel to release the wire rope. During the process of releasing the wire rope, the movable lamp pole begins to rotate and fall down, and the staff can touch the lamp without the need for a bracket, which increases the staff's work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The present invention is a schematic diagram showing a front view of an energy-saving lighting device that can be adjusted at multiple angles.

[0017] Figure 2 A schematic diagram of a side view of an energy-saving lighting device that can be adjusted at multiple angles.

[0018] Figure 3 This is a schematic diagram of a reel seat for an energy-saving lighting device that can be adjusted at multiple angles.

[0019] Figure 4 This is a schematic diagram of a multi-angle adjustable energy-saving lighting device receiving slot.

[0020] Figure 5 A schematic diagram of the installation base of an energy-saving lighting device that can be adjusted at multiple angles.

[0021] Figure 6 A schematic diagram of a cross-section of the installation base of an energy-saving lighting device that can be adjusted at multiple angles.

[0022] Figure 7 This is a schematic diagram of a load-bearing tube for an energy-saving lighting device that can be adjusted at multiple angles.

[0023] Figure 8 This is a schematic diagram of an energy-saving lighting device with a load-bearing tube that can be adjusted at multiple angles, viewed from above.

[0024] Figure 9 A schematic diagram of an expansion vertical rod of an energy-saving lighting device that can be adjusted at multiple angles.

[0025] Figure 10 This is a schematic diagram of a multi-angle adjustable energy-saving lighting device clip-on plate.

[0026] Description of reference numerals:

[0027] Install the base 1, closing plug 101, steel ring 102, closing groove 103, snap block 104, street light pole 2, end plate 201, grounding plate 3, load-bearing cylinder 4, cover plate 401, torque handle 402, snap plate 403, bevel piece 404, threaded rod 405, steel ball 406, return spring 407, fixed vertical pole 5, accommodating groove 501, movable lamp pole 6, hinge block 601, winding shaft seat 7, winding rod 701, wire rope 702, pin rod 703, expansion vertical rod 8, pressure cone disk 801, push-down block 802. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the invention for which protection is sought, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0029] The present invention provides Figures 1-10The energy-saving lighting device shown in the figure can be adjusted at multiple angles, including a mounting base 1, the outer side of the mounting base 1 is provided with a closing groove 103, the closing groove 103 is divided into three levels of height: upper, middle and lower, the upper layer is provided with six closing grooves 103 in a circular array, the middle layer is provided with eight closing grooves 103 in a circular array, and the lower layer is provided with ten closing grooves 103 in a circular array, each of the closing grooves 103 is interspersed with a closing plug 101, and the inner end of the closing plug 101 is provided with a snap-fit ​​block 104, the upper snap-fit ​​blocks 104 are combined to form a hexagon, the middle snap-fit ​​blocks 104 are combined to form an octagon, and the lower snap-fit ​​blocks 104 are combined to form a decagon, the diameter of the octagon is smaller than that of the hexagon, and the diameter of the decagon is smaller than that of the octagon, The outer end of the closing plug 101 is provided with a tightening groove, and a steel ring 102 is filled inside the tightening groove. The interior of the clamping block 104 is filled with a street light pole 2. The top of the street light pole 2 is provided with a debugging pole assembly, and the bottom of the mounting base 1 is provided with a ground pile assembly. The three levels of clamping blocks 104 form hexagonal, octagonal and decagonal filling channels. The interior of the clamping block 104 can be inserted with three types of street light poles, namely hexagonal prism, octagonal prism and decagonal prism. When the angle of the street light pole needs to be adjusted, the steel ring 102 is taken out, and then the closing plug 101 of the annular array will be loosened. After the angle of the street light pole is adjusted, the steel ring 102 is inserted back to lock the closing plug 101, thereby achieving the effect of conveniently debugging the street light angle.

[0030] The debugging lamp pole assembly includes an end plate 201 at the top of the street light pole 2, and a fixed vertical pole 5 and a hinge block 601 are provided at the top of the end plate 201. A movable lamp pole 6 is provided at the top of the hinge block 601, and a torsion bar rotatably connected to the inside of the hinge block 601 is provided at the bottom of the movable lamp pole 6. The top locking assembly of the fixed vertical pole 5 and the movable lamp pole 6, and the side of the fixed vertical pole 5 facing away from the movable lamp pole 6 are provided with a pulling assembly. When the staff needs to debug the lamp, the movable lamp pole 6 is rotated and dropped, and the staff can touch the lamp without a bracket, which increases the staff's work efficiency. Compared with the existing method of maintaining lamps, the previous maintenance method requires dragging a bulky bracket, which greatly affects work efficiency.

[0031] The pulling assembly includes a winding shaft seat 7 on the side wall of the fixed vertical pole 5, and a winding rod 701 is rotatably set on one side of the winding shaft seat 7. The outer side of the winding rod 701 pulls out the wire rope 702, and the interior of the fixed vertical pole 5 is provided with a threading channel matching the wire rope 702, and threading holes are provided above and below the threading channel. The wire rope 702 passes through the interior of the fixed vertical pole 5 and is connected to the top of the movable lamp pole 6. A pin assembly is provided on the winding rod 701. The staff rotates the winding rod 701 to release the wire rope 702. During the process of releasing the wire rope 702, the movable lamp pole 6 starts to rotate and fall, achieving the effect of convenient retracting and releasing the lamp pole.

[0032] The pin assembly includes a pin hole on the winding rod 701, and a docking lock hole matching the pin hole is provided on the side wall of the fixed vertical pole 5. The docking lock hole and the pin hole are connected by a pin rod 703. A detachable crank is provided on the axis of the winding rod 701. After pulling out the pin rod 703, the winding rod 701 is rotated. After the winding rod 701 has completed retracting and releasing the wire rope 702, the pin rod 703 is inserted back.

[0033] The locking assembly includes a receiving groove 501 at the top of the fixed vertical pole 5, the top of the movable lamp pole 6 is inserted into the interior of the receiving groove 501, and a layer of rubber pad is laid on the inner wall of the receiving groove 501. When the movable lamp pole 6 is rotated and erected, the top of the movable lamp pole 6 will be inserted into the interior of the receiving groove 501, and the movable lamp pole 6 will be locked by the rubber pad on the inner wall of the receiving groove 501, so that the street lamp can absorb vibration when it is windy.

[0034] The ground pile assembly includes a load-bearing cylinder 4 at the bottom end of the mounting base 1, and the load-bearing cylinder 4 is inserted into the square pit on the concrete ground pile. A grounding plate 3 is provided in the middle of the load-bearing cylinder 4, and the grounding plate 3 covers the concrete ground pile. The bottom end of the load-bearing cylinder 4 is provided with four telescopic rectangular grooves, and a clamping plate 403 is slidably inserted into the interior of the telescopic rectangular groove. The bottom of the concrete ground pile square pit is provided with a buckle groove matching the clamping plate 403. The clamping plate 403 is connected to the retractable assembly, and the load-bearing cylinder 4 is inserted into the concrete ground pile. The clamping plate 403 is extended to lock in the buckle groove in the concrete ground pile, thereby increasing the stability of the load-bearing cylinder 4.

[0035] The retracting and extending assembly includes a square tube sleeve in the center of the load-bearing cylinder 4, and an expansion vertical rod 8 is slidably installed in the middle of the square tube sleeve. The bottom end of the expansion vertical rod 8 is provided with a pressure cone disk 801, and the inner end of the clamping plate 403 is provided with an inclined piece 404. The pressure cone disk 801 is fitted on the side wall of the inclined piece 404. The bottom of the clamping plate 403 is provided with a return spring 407, one end of the return spring 407 is fixedly connected to the side wall of the clamping plate 403, and the other end of the return spring 407 is fixedly connected to the inner wall of the load-bearing cylinder 4. The top of the expansion vertical rod 8 is provided with a pressure assembly. When the expansion vertical rod 8 is pushed downward, the pressure cone disk 801 at the bottom of the expansion vertical rod 8 will press the four inclined pieces 404 at the same time, and then the four clamping plates 403 will extend from the inside of the load-bearing cylinder 4, achieving the effect of convenient expansion. When the expansion vertical rod 8 is pushed upward, the four clamping plates 403 are retracted by the return spring 407.

[0036] The pressure assembly includes a push-down block 802 at the top of the expansion vertical rod 8, and a cover plate 401 is also provided on the side wall of the load-bearing cylinder 4, a threaded hole is provided in the middle of the cover plate 401, a threaded rod 405 is provided inside the threaded hole, a steel ball 406 is provided at the inner end of the threaded rod 405, the steel ball 406 contacts the slope of the push-down block 802, and a torque handle 402 is provided at the outer end of the threaded rod 405. When the staff rotates the torque handle 402 and the threaded rod 405, the threaded rod 405 and the steel ball 406 at its end will squeeze or withdraw from the push-down block 802, and the push-down block 802 will drive the expansion vertical rod 8 to rise and fall after being subjected to the pressure of the steel ball 406.

[0037] Working principle: The three-level snap-fit ​​blocks 104 form hexagonal, octagonal and decagonal filling channels. The interior of the snap-fit ​​blocks 104 can be inserted into three types of street light poles: hexagonal prism, octagonal prism and decagonal prism. When the street light pole needs to adjust the angle, the steel ring 102 is taken out, and then the closing plug-in block 101 of the ring array will be loosened. After the street light pole adjusts the angle, the steel ring 102 is inserted back to lock the closing plug-in block 101, realizing the effect of convenient debugging of the street light angle. When the staff needs to debug the lamp When the movable lamp pole 6 is rotated and dropped, the staff can touch the lamp without the bracket, which increases the staff's work efficiency. Compared with the existing maintenance method of lamps, the previous maintenance method requires dragging a bulky bracket, which greatly affects work efficiency. The staff rotates the winding rod 701 to release the wire rope 702. During the process of releasing the wire rope 702, the movable lamp pole 6 starts to rotate and drop, realizing the effect of convenient retracting and releasing the lamp pole. After pulling out the pin rod 703, the winding rod 701 is rotated again, and the winding rod 701 is rotated. 01 After the wire rope 702 is retracted and extended, the pin rod 703 is inserted back. When the movable lamp pole 6 is rotated and erected, the top of the movable lamp pole 6 will be inserted into the interior of the receiving groove 501. The movable lamp pole 6 is locked by the rubber pad on the inner wall of the receiving groove 501, so that the street lamp can absorb vibration when it is windy. Insert the load-bearing tube 4 into the concrete pile. The clamping plate 403 is extended and can be locked in the buckle groove in the concrete pile, which increases the stability of the load-bearing tube 4. When the expansion vertical rod 8 is pushed downward, the expansion vertical rod 8 The pressure cone disk 801 at the bottom will press the four inclined pieces 404 at the same time, and then the four clip plates 403 will extend from the inside of the load-bearing cylinder 4, achieving the effect of convenient expansion. When the expansion vertical rod 8 is pushed upward, the four clip plates 403 are retracted by the reset spring 407. The staff rotates the torque handle 402 and the threaded rod 405, and the threaded rod 405 and the steel ball 406 at its end will squeeze or withdraw the push-down block 802. After the push-down block 802 is subjected to the pressure of the steel ball 406, it will drive the expansion vertical rod 8 to rise and fall.

[0038] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

[0039] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

Claims

1. An energy-saving lighting device capable of multi-angle adjustment, characterized by: The invention comprises a mounting base (1), wherein the outer side of the mounting base (1) is provided with a closing groove (103), and the closing groove (103) is divided into three levels: upper, middle and lower. The upper level is provided with six closing grooves (103) in an annular array, the middle level is provided with eight closing grooves (103) in an annular array, and the lower level is provided with ten closing grooves (103) in an annular array. Closing plugs (101) are inserted into the closing grooves (103), and the inner ends of the closing plugs (101) are provided with locking blocks (104). The upper locking blocks (10 4) forming a hexagon, the middle-layer snap-fitting blocks (104) forming an octagon, and the lower-layer snap-fitting blocks (104) forming a decagon, the octagon having a smaller diameter than the hexagon, and the decagon having a smaller diameter than the octagon, the outer end of the closing plug block (101) being provided with a tightening groove, the interior of the tightening groove being filled with a steel ring (102), the interior of the snap-fitting blocks (104) being filled with a street light pole (2), the top of the street light pole (2) being provided with a debugging pole assembly, and the bottom of the mounting base (1) being provided with a ground pile assembly; The three-level locking blocks (104) form a hexagonal, octagonal, and decagonal filling channel. The inside of the locking block (104) can be inserted with three types of street light poles (2) of hexagonal prism, octagonal prism, and decagonal prism. When the street light pole (2) needs to adjust the angle, the steel ring (102) is taken out, and then the closing plug-in block (101) of the ring array is loosened. After the street light pole (2) adjusts the angle, the steel ring (102) is inserted back to lock the closing plug-in block (101), thereby achieving the effect of conveniently debugging the street light angle.

2. The energy-saving lighting device capable of multi-angle adjustment according to claim 1, characterized in that: The debugging lamp pole assembly comprises an end plate (201) at the top of a street lamp pole (2), a fixed vertical pole (5) and a hinge block (601) are provided at the top of the end plate (201), a movable lamp pole (6) is provided at the top of the hinge block (601), a torsion bar rotatably connected to the inside of the hinge block (601) is provided at the bottom of the movable lamp pole (6), a locking assembly at the top of the fixed vertical pole (5) and the movable lamp pole (6), and a pulling assembly is provided on the side of the fixed vertical pole (5) facing away from the movable lamp pole (6).

3. The energy-saving lighting device capable of multi-angle adjustment according to claim 2, characterized in that: The pulling assembly includes a reel seat (7) on the side wall of the fixed vertical pole (5), a reeling rod (701) is rotatably provided on one side of the reel seat (7), and a steel wire rope (702) is pulled out from the outside of the reeling rod (701), and a threading channel matching the steel wire rope (702) is provided inside the fixed vertical pole (5), and threading holes are provided above and below the threading channel, and the steel wire rope (702) passes through the inside of the fixed vertical pole (5) and is connected to the top of the movable lamp pole (6), and a pin assembly is provided on the reeling rod (701).

4. The energy-saving lighting device capable of multi-angle adjustment according to claim 3, characterized in that: The pin assembly includes a pin hole on the winding rod (701), a docking lock hole matching the pin hole is provided on the side wall of the fixed vertical rod (5), the docking lock hole and the pin hole are connected by a pin rod (703), and a detachable crank is provided on the axis of the winding rod (701).

5. The energy-saving lighting device capable of multi-angle adjustment according to claim 2, characterized in that: The locking assembly comprises a receiving groove (501) at the top end of the fixed vertical pole (5), the top end of the movable lamp pole (6) is inserted into the interior of the receiving groove (501), and a layer of rubber pad is laid on the inner side wall of the receiving groove (501).

6. The energy-saving lighting device capable of multi-angle adjustment according to claim 1, characterized in that: The ground pile assembly comprises a bearing cylinder (4) at the bottom end of an installation base (1), the bearing cylinder (4) being inserted into a square pit on a concrete ground pile, a grounding plate (3) being provided in the middle of the bearing cylinder (4), the grounding plate (3) being covered on the concrete ground pile, four telescopic rectangular grooves being provided at the bottom end of the bearing cylinder (4), a clamping plate (403) being slidably inserted into the interior of the telescopic rectangular groove, a buckle groove matching the clamping plate (403) being provided at the bottom of the concrete ground pile square pit, and the clamping plate (403) being connected to the retractable assembly.

7. The energy-saving lighting device capable of multi-angle adjustment according to claim 6, characterized in that: The retractable assembly comprises a square tube sleeve at the center of the bearing cylinder (4), an expansion vertical rod (8) is slidably installed in the middle of the square tube sleeve, a pressure cone disk (801) is provided at the bottom end of the expansion vertical rod (8), an inclined plate (404) is provided at the inner end of the clamping plate (403), the pressure cone disk (801) is fitted on the side wall of the inclined plate (404), a return spring (407) is provided at the bottom of the clamping plate (403), one end of the return spring (407) is fixedly connected to the side wall of the clamping plate (403), and the other end of the return spring (407) is fixedly connected to the inner wall of the bearing cylinder (4), and a pressure assembly is provided at the top end of the expansion vertical rod (8).

8. The energy-saving lighting device capable of multi-angle adjustment according to claim 7, characterized in that: The pressure assembly includes a push-down block (802) at the top end of the expansion vertical rod (8), and a cover plate (401) is further provided on the side wall of the load-bearing cylinder (4). A threaded hole is provided in the middle of the cover plate (401), and a threaded rod (405) is provided inside the threaded hole. A steel ball (406) is provided at the inner end of the threaded rod (405), and the steel ball (406) contacts the slope of the push-down block (802). A torque handle (402) is provided at the outer end of the threaded rod (405).

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