Wind power installation level survey equipment

Abstract

The invention relates to the technical field of wind power equipment installation, in particular to wind power installation level surveying equipment. According to the technical scheme, the device comprises a level exploration assembly, a supporting driving assembly is installed at the bottom of the level exploration assembly, a foot positioning assembly is installed on the outer side of the supporting driving assembly, and an umbrella-shaped anti-inclination assembly is installed at the bottom of the supporting driving assembly. A second positioning deflection rod drives a triangular blade block to move upwards through an auxiliary insertion rod, and the triangular blade block drives a first positioning deflection rod to deflect upwards along a limiting ring stop block, so that the triangular blade block is in an open state and exerts an opening force on the land surface, and then a positioning insertion column is subjected to an outward wrapping force to prevent the tripod from being blown by wind; and the position, inserted into the land, of the equipment is wrapped and protected by the triangular blade blocks, so that the situation that the tripod is installed and deviated due to the fact that the connected land surface such as sandy soil collapses or moves under the impact of wind caused by wind power is further prevented.

Description

Technical Field

[0001] The present invention relates to the technical field of wind power equipment installation, and in particular to a wind power installation leveling survey device. Background Art

[0002] In the early stage of wind power installation, the site needs to be leveled. Leveling equipment can accurately measure the elevation of different locations on the site and determine the height difference of the site. With these data, construction personnel can reasonably plan the excavation and filling of earthwork to ensure that the wind turbine foundation installation area meets the flatness required by the design, providing good conditions for subsequent foundation construction.

[0003] At present, in order to obtain sufficient wind energy and facilitate installation, wind power equipment is usually installed in desert areas or clay areas. The sandy ground can provide a wide installation space, without too many obstacles affecting the acquisition of wind energy, and the wind energy resources are abundant. The clay ground has a certain viscosity and plasticity, and after proper treatment, it can provide better support for wind power equipment.

[0004] In the patent document with the publication number CN210070924U, a wind turbine base assembly platform level detection device is disclosed, including a mounting seat, a first angle plate, a second bracket, a moving column, a fixing clamp and a laser light, the first angle plate is arranged on the lower end face of the first bracket, and a plumb bob is connected to the first angle plate, the second bracket is arranged in the first bracket, the moving column passes through the second bracket, and the moving column is arranged on the left side of the first bracket, the fixing clamp is arranged above the moving column, and the fixing clamp is fixed to the moving column by a stud, and a second angle plate is arranged behind the pointer. The wind turbine base assembly platform level detection device adjusts the angle of the fixing clamp and the moving column according to the angle difference of the first angle plate, so that the laser light is level with the ground, and the level of the assembly platform is known through the irradiation of the laser light.

[0005] When the above device is in use, the angle difference of the angle plate is used to adjust the angle of the fixed clamp and the movable column, so that the equipment can be used for exploration. Wind power is usually installed in a relatively open site with a good wind foundation. Strong winds may cause the level rod fixed to the tripod to shake, resulting in inaccurate readings. If any of the tripod foot nail components are affected, the data accuracy of the level test may be easily affected.

[0006] Therefore, the present application proposes a wind power installation leveling survey device. Summary of the invention

[0007] The purpose of the present invention is to propose a wind power installation leveling survey equipment to address the problem in the background technology that wind power is usually installed in a relatively open site with a good wind foundation, and strong winds may cause the level rod fixed to the tripod to shake, resulting in inaccurate readings, and any foot nail assembly of the tripod may be affected, which may easily affect the data accuracy of the leveling test.

[0008] The technical solution of the present invention is: a wind power installation leveling survey equipment, comprising a leveling survey component, a support drive component is installed at the bottom of the leveling survey component, a foot positioning component is installed on the outside of the support drive component, and an umbrella-shaped anti-tilt component is installed at the bottom of the support drive component; The support drive assembly comprises a triangular support base fixedly mounted on the bottom of the leveling exploration assembly, and a positioning plug is fixedly mounted on the bottom of the triangular support base; The umbrella-shaped anti-skew component includes a limiting ring block fixedly installed on the outside of the positioning column, and eight triangular leaf blocks are hinged on the outside of the limiting ring block, wherein a plurality of first positioning deflection rods are fixedly installed between four of the triangular leaf blocks, and a plurality of auxiliary rods are fixedly installed between the other four triangular leaf blocks through an annular fixed block, and the plurality of auxiliary rods and the first positioning deflection rods are staggeredly installed between the eight triangular leaf blocks, and a second positioning deflection rod is hinged on the side of the auxiliary rod facing the positioning column, and a movable push block is hinged on the side of the second positioning deflection rod away from the triangular leaf block, and the movable push block is slidably installed on the outside of the positioning column, and an auxiliary spring is fixedly installed at the connection between the triangular leaf block and the limiting ring block.

[0009] Optionally, a buffer pad is fixedly mounted on the top of the limiting ring block, an annular block is fixedly mounted on the top of the buffer pad, and both the annular block and the buffer pad are fixedly mounted on the outside of the positioning column.

[0010] Optionally, the umbrella-shaped anti-tilt assembly further comprises a plurality of tilt guide rods hinged at the bottom of the auxiliary insertion rod and the first positioning deflection rod, and the bottom of the tilt guide rods is hinged with an auxiliary support plate.

[0011] Optionally, an arc spring is fixedly installed between the tilt guide rod and the auxiliary support plate, a storage cavity is opened on one side of the tilt guide rod, and a reset airbag is fixedly installed on one side of the tilt guide rod through the storage cavity.

[0012] Optionally, the support drive assembly further comprises three side positioning blocks arranged in a ring shape on the outer side of the triangular support base, and the bottom of the triangular support base is connected to a main positioning gear through the forward and reverse rotation of the motor.

[0013] Optionally, the outer side of the main positioning gear is meshedly connected with a bidirectional interlocking gear, and the inner side of the bidirectional interlocking gear is rotatably installed with an auxiliary limiting sleeve, and the auxiliary limiting sleeve is fixedly installed on the outer side of the positioning plug column.

[0014] Optionally, a first auxiliary gear is meshedly installed on the outer side of the bidirectional meshing gear, the number of the first auxiliary gears is two, and a positioning column is fixedly installed inside the two first auxiliary gears, and the positioning column is rotatably installed at the bottom of the side positioning block.

[0015] Optionally, the foot positioning assembly includes a second auxiliary gear meshingly mounted on the outside of another first auxiliary gear, and the second auxiliary gear is rotatably mounted on the bottom of the side positioning block.

[0016] Optionally, a hollow positioning column is hinged inside the side positioning block, a hollow insertion rod is slidably installed on one side of the hollow positioning column, a supporting tilting component is fixedly installed on one side of the hollow insertion rod, a telescopic transmission wheel rack is rotatably installed on the outer side of the second auxiliary gear, a hollow insertion rod is rotatably installed on the side of the telescopic transmission wheel rack away from the second auxiliary gear, and the hollow insertion rod is rotatably installed on the outer side of the hollow positioning column.

[0017] Optionally, a storage wheel rack block is fixedly installed inside the hollow insertion rod, and the storage wheel rack block is meshingly connected with the two-way guide gear passing through one side of the hollow positioning column. A telescopic guide rod is hinged on one side of the hollow positioning column, and the telescopic guide rod is fixedly installed on the outside of the annular block.

[0018] In summary, the present application includes at least one of the following beneficial technical effects: 1. The second positioning deflection rod drives the triangular leaf block to move upward through the auxiliary plug rod, and the triangular leaf block drives the first positioning deflection rod to deflect upward along the limit ring block, so that the triangular leaf block is in an open state, exerting a tension force on the ground surface, thereby causing the positioning plug column to be subjected to an outward wrapping force to prevent the tripod from being blown by the wind. In addition, since the position where the equipment is inserted into the ground is wrapped and protected by the triangular leaf block, it is further prevented that the wind force causes the connected land surface, such as sand, to collapse or move under the impact of the wind, causing the tripod to be installed offset; 2. The two-way guide gear drives the storage wheel rack block and the hollow plug rod to move outward, which is convenient for positioning the tripod. At the same time, since the three hollow positioning columns transmit the pressure to the annular block through the telescopic guide rod, the annular block can transmit the pressure of the hollow positioning column during support to the ground through the connection between the positioning plug column and the ground, thereby improving the stability of the exploration equipment; 3. Compared with the reset airbag directly contacting the ground, the reset airbag applies pressure to the auxiliary support plate to prevent itself from being unevenly stressed due to debris on the ground surface, which may lead to errors in wrapping the positioning column. When the auxiliary support plate transmits the ground force to the bottom of the reset airbag, a pressure sensing component is provided at the bottom of the reset airbag. By transmitting the data of the pressure component to the terminal, the staff can compare the data with the leveler to reduce the tilt error of the leveling exploration component during installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A structural schematic diagram of the wind power installation leveling survey equipment of the present invention is given; Figure 2 It is a structural schematic diagram of the leveling exploration assembly of the present invention; Figure 3 It is a structural schematic diagram of the triangular support base of the present invention; Figure 4 It is a structural schematic diagram of the hollow plunger of the present invention; Figure 5 It is a structural schematic diagram of the storage wheel rack block of the present invention; Figure 6 This is a schematic diagram of the structure of the positioning column of the present invention; Figure 7 It is a schematic diagram of the structure of the resetting airbag of the present invention; Figure 8 It is a schematic diagram of the structure of the buffer pad of the present invention; Fig. 9 for Figure 8 Enlarged view of the middle A area; Fig.10 It is a structural schematic diagram of the movable push block of the present invention.

[0020] Figure numerals: 1, leveling exploration component; 2, support drive component; 201, triangular support base; 202, side positioning block; 203, positioning plug column; 204, auxiliary limit sleeve; 205, two-way matching gear; 206, main positioning gear; 207, positioning rotating column; 208, first auxiliary gear; 3, foot positioning component; 301, hollow positioning column; 302, second auxiliary gear; 303, support tilting component; 304, hollow plug rod; 305, two-way guide gear; 306, telescopic transmission wheel rack; 307, storage wheel rack block; 4, umbrella-shaped anti-tilt assembly; 401, annular block; 402, first positioning deflection rod; 403, telescopic guide rod; 404, limit ring block; 405, movable push block; 406, triangular leaf block; 407, auxiliary support plate; 408, auxiliary plug rod; 409, tilting guide rod; 410, reset airbag; 411, arc spring; 412, buffer pad; 413, annular fixing block; 414, second positioning deflection rod. DETAILED DESCRIPTION

[0021] The technical solution of the present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0022] like Figure 1 As shown, a wind power installation leveling survey equipment proposed by the present invention includes a leveling survey component 1, a support driving component 2 is installed at the bottom of the leveling survey component 1, a foot positioning component 3 is installed on the outside of the support driving component 2, and an umbrella-shaped anti-tilt component 4 is installed at the bottom of the support driving component 2.

[0023] Specifically, the support drive assembly 2 includes a triangular support base 201 fixedly installed at the bottom of the leveling exploration assembly 1, and a positioning column 203 is fixedly installed at the bottom of the triangular support base 201. When the positioning column 203 at the bottom of the equipment is inserted into the specified sand, the looseness of the sand is reduced, and the positioning column 203 is inserted into the clay, and the drainage equipment is used to drain the moist clay, so that the positioning column 203 can be fully wrapped by the clay and is difficult to shake.

[0024] like Figure 1 - Figure 3As shown, the support drive assembly 2 also includes three side positioning blocks 202 arranged in a ring shape on the outer side of the triangular support base 201. The bottom of the triangular support base 201 is connected to a main positioning gear 206 through the forward and reverse motor rotation. The outer side of the main positioning gear 206 is meshed with a two-way matching gear 205. The inner side of the two-way matching gear 205 is rotatably installed with an auxiliary limiting sleeve 204. The auxiliary limiting sleeve 204 is fixedly installed on the outer side of the positioning plug column 203. The outer side of the two-way matching gear 205 is meshed with a first auxiliary gear 208. The number of the first auxiliary gears 208 is two. The interiors of the two first auxiliary gears 208 are fixedly installed with a positioning column 207. The positioning column 207 is rotatably installed on the side positioning block 2 02, the bottom of the foot positioning assembly 3 includes a second auxiliary gear 302 meshingly installed on the outside of another first auxiliary gear 208, the second auxiliary gear 302 is rotatably installed on the bottom of the side positioning block 202, when the foot positioning assembly 3 needs to be placed, the forward and reverse motors drive the main positioning gear 206 to rotate, the main positioning gear 206 drives the two-way fitting gear 205 to rotate by meshing with the two-way fitting gear 205, the two-way fitting gear 205 drives the first auxiliary gear 208 to rotate by meshing with the first auxiliary gear 208, the first auxiliary gear 208 drives the positioning rotating column 207 and another first auxiliary gear 208 to rotate, the inside of the side positioning block 202 is hinged with a hollow positioning column 301, the hollow positioning column 301 A hollow plunger 304 is slidably installed on one side, and a supporting tilting component 303 is fixedly installed on one side of the hollow plunger 304. A telescopic transmission wheel rack 306 is rotatably installed on the outer side of the second auxiliary gear 302. When the hollow positioning column 301 is adjusted with a foot screw, the telescopic transmission wheel rack 306 always keeps meshing with the second auxiliary gear 302 because the inner wall is gear teeth and the middle section of the telescopic transmission wheel rack 306 is telescopic, that is, the middle section is a telescopic rod with a built-in spring. The telescopic transmission wheel rack 306 is rotatably installed on the side away from the second auxiliary gear 302. The hollow plunger 304 is rotatably installed on the outer side of the hollow positioning column 301. First, the leveling exploration component 1 is placed on the triangular support base 20 1, fix it with a fixing assembly, and adjust the heights and foot screws of the three hollow positioning columns 301 at the same time to make the leveling exploration component 1 roughly horizontal, then use a level to perform preliminary leveling, and center the bubble of the level by rotating the foot screws of the hollow positioning column 301 to detect whether the leveling exploration component 1 is in a horizontal state. The leveling exploration component 1 in a horizontal state then obtains the result through optical readings, and a storage wheel rack block 307 is fixedly installed inside the hollow insertion rod 304, and the storage wheel rack block 307 is meshedly connected with the two-way guide gear 305 passing through one side of the hollow positioning column 301, and a telescopic guide rod 403 is hinged on one side of the hollow positioning column 301, and the telescopic guide rod 403 is fixedly installed on the outer side of the annular block 401,The telescopic transmission wheel rack 306 drives the two-way guide gear 305 to rotate through the second auxiliary gear 302. The two-way guide gear 305 is located on one side of the hollow positioning column 301 and drives the hollow plug rod 304 and the storage wheel rack block 307 to be gathered on the hollow positioning column 301 through meshing with the storage wheel rack block 307, thereby facilitating the storage and carrying of the tripod. When the tripod needs to be used, the two-way guide gear 305 drives the storage wheel rack block 307 and the hollow plug rod 304 to move outward, which is convenient for positioning the tripod. At the same time, since the three hollow positioning columns 301 transmit the pressure to the annular block 401 through the telescopic guide rod 403, the annular block 401 can transmit the pressure on the hollow positioning column 301 during support to the ground through the connection between the positioning plug column 203 and the ground, thereby improving the stability of the exploration equipment.

[0025] like Figure 1 - Fig.10As shown, the umbrella-shaped anti-tilt component 4 includes a limiting ring block 404 fixedly mounted on the outside of the positioning plug column 203, and eight triangular leaf blocks 406 are hinged on the outside of the limiting ring block 404, wherein a plurality of first positioning deflection rods 402 are fixedly mounted between four triangular leaf blocks 406, and a plurality of auxiliary plug rods 408 are fixedly mounted between the other four triangular leaf blocks 406 through an annular fixing block 413, and the plurality of auxiliary plug rods 408 are respectively fixedly mounted on the outside of the triangular leaf blocks 406, and the plurality of auxiliary plug rods 408 are connected to the first positioning deflection rods 402. The eight triangular leaf blocks 406 are staggeredly installed. The auxiliary rod 408 is hingedly connected to the second positioning deflection rod 414 on the side facing the positioning plug column 203. The second positioning deflection rod 414 is hingedly connected to the side away from the triangular leaf block 406. The movable push block 405 is slidably installed on the outside of the positioning plug column 203. An auxiliary spring is fixedly installed at the connection between the triangular leaf block 406 and the limit ring block 404. When the positioning plug column 203 is inserted into the specified position, the movable push block 405 on the surface of the positioning plug column 203 is Under the reaction force of the ground, the triangular leaf block 406 moves upward along the positioning plug column 203. During this process, the movable push block 405 slides a specified distance according to the reaction force in the limit position of the limit ring block 404, and the movable push block 405 drives the second positioning deflection rod 414 to move upward. Since the first positioning deflection rod 402 is hinged to the limit ring block 404, the moving direction of the triangular leaf block 406 is always restricted by the first positioning deflection rod 402 and the second positioning deflection rod 414. The second positioning deflection rod 414 is connected to the auxiliary plug rod 404. 8 drives the triangular leaf block 406 to move upward, and the triangular leaf block 406 drives the first positioning deflection rod 402 to deflect upward along the limit ring block 404, causing the triangular leaf block 406 to be in an open state, exerting a tensioning force on the ground surface, thereby causing the positioning column 203 to be subjected to an outward wrapping force to prevent the tripod from being blown by the wind. In addition, since the position where the equipment is inserted into the ground is wrapped and protected by the triangular leaf block 406, it is further prevented from causing the connected ground surface, such as sand, to collapse or move under the impact of the wind, causing the tripod to be installed offset.

[0026] In this embodiment, a buffer pad 412 is fixedly installed on the top of the limiting ring block 404, and a ring block 401 is fixedly installed on the top of the buffer pad 412, and the ring block 401 and the buffer pad 412 are fixedly installed on the outside of the positioning plug column 203. The umbrella-shaped anti-tilt component 4 also includes a plurality of tilting guide rods 409 hinged at the bottom of the auxiliary plug rod 408 and the first positioning deflection rod 402, and an auxiliary support plate 407 is hinged at the bottom of the tilting guide rod 409. An arc spring 411 is fixedly installed between the tilting guide rod 409 and the auxiliary support plate 407. A storage cavity is opened on one side of the tilting guide rod 409, and a reset airbag 410 is fixedly installed on one side of the tilting guide rod 409 through the storage cavity. As the triangular leaf block 406 opens, the auxiliary plug rod 408 tilts downward due to gravity, and the auxiliary support plate 407 contacts the ground surface, then the tilting guide rod 409 and the auxiliary support plate 407 are connected. When the arc spring 411 is in an angle limiting state, the reset airbag 410 stored in the tilt guide rod 409 is inflated through the ventilation device arranged in the reset airbag 410, and the upper surface of the reset airbag 410 is against the tilt guide rod 409, and the bottom of the reset airbag 410 is against the bottom of the auxiliary support plate 407. Compared with the reset airbag 410 directly contacting the ground, the reset airbag 410 applies pressure to the auxiliary support plate 407 to prevent itself from being unevenly stressed due to debris on the ground surface, thereby causing errors in wrapping the positioning plug 203. When the auxiliary support plate 407 transmits the ground force to the bottom of the reset airbag 410, a pressure sensing component is arranged at the bottom of the reset airbag 410. By transmitting the data of the pressure component to the terminal, the staff can compare the data with the leveler to reduce the tilt error of the leveling exploration component 1 during installation; When the device stops being used and the staff dismantles the device, the deflation device in the reset airbag 410 releases the airflow, and the triangular leaf block 406 returns to its original position through the auxiliary spring and gravity, which is convenient for protecting the pressure sensing component and making it easy to carry the tripod.

[0027] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0028] The above specific embodiments are only several optional embodiments of the present invention. Based on the technical solutions of the present invention and the relevant inspirations of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. A wind power installation leveling survey device, comprising a leveling survey component (1), characterized in that: A support drive assembly (2) is installed at the bottom of the leveling exploration assembly (1), a foot positioning assembly (3) is installed on the outside of the support drive assembly (2), and an umbrella-shaped anti-tilt assembly (4) is installed at the bottom of the support drive assembly (2); The support drive assembly (2) comprises a triangular support base (201) fixedly mounted on the bottom of the leveling exploration assembly (1), and a positioning plug column (203) is fixedly mounted on the bottom of the triangular support base (201); The umbrella-shaped anti-tilt assembly (4) comprises a limiting ring block (404) fixedly mounted on the outside of the positioning plug column (203), and eight triangular leaf blocks (406) are hingedly mounted on the outside of the limiting ring block (404), wherein a plurality of first positioning deflection rods (402) are fixedly mounted between four of the triangular leaf blocks (406), and a plurality of auxiliary plug rods (408) are fixedly mounted between the other four triangular leaf blocks (406) via an annular fixing block (413), and the plurality of auxiliary plug rods (408) and the first positioning deflection rods are connected to each other. (402) The eight triangular leaf blocks (406) are arranged in a staggered manner, and the auxiliary plug rod (408) is hinged with a second positioning deflection rod (414) on the side facing the positioning plug column (203), and the second positioning deflection rod (414) is hinged with a movable push block (405) on the side away from the triangular leaf block (406). The movable push block (405) is slidably installed on the outside of the positioning plug column (203), and an auxiliary spring is fixedly installed at the connection between the triangular leaf block (406) and the limit ring block (404).

2. A wind power installation level survey equipment according to claim 1, characterized in that: A buffer pad (412) is fixedly mounted on the top of the limiting ring block (404), an annular block (401) is fixedly mounted on the top of the buffer pad (412), and both the annular block (401) and the buffer pad (412) are fixedly mounted on the outside of the positioning plug column (203).

3. A wind power installation leveling survey equipment according to claim 2, characterized in that: The umbrella-shaped anti-tilt assembly (4) further comprises a plurality of tilt guide rods (409) hinged to the bottom of the auxiliary insertion rod (408) and the first positioning deflection rod (402), and the bottom of the tilt guide rod (409) is hinged to an auxiliary support plate (407).

4. A wind power installation level survey equipment according to claim 3, characterized in that: An arc spring (411) is fixedly installed between the tilt guide rod (409) and the auxiliary support plate (407), a storage cavity is provided on one side of the tilt guide rod (409), and a reset airbag (410) is fixedly installed on one side of the tilt guide rod (409) through the storage cavity.

5. The wind power installation level survey equipment according to claim 1, characterized in that: The support drive assembly (2) further comprises three side positioning blocks (202) arranged in a ring shape on the outside of the triangular support base (201); the bottom of the triangular support base (201) is connected to a main positioning gear (206) through the rotation of a forward and reverse motor.

6. A wind power installation level survey equipment according to claim 5, characterized in that: The outer side of the main positioning gear (206) is meshedly connected with a bidirectional interlocking gear (205), and the inner side of the bidirectional interlocking gear (205) is rotatably mounted with an auxiliary limiting sleeve (204), and the auxiliary limiting sleeve (204) is fixedly mounted on the outer side of the positioning plug column (203).

7. A wind power installation level survey equipment according to claim 6, characterized in that: A first auxiliary gear (208) is meshedly mounted on the outer side of the bidirectionally engaged gear (205), and the number of the first auxiliary gears (208) is two. Positioning rotating columns (207) are fixedly mounted inside the two first auxiliary gears (208), and the positioning rotating columns (207) are rotatably mounted on the bottom of the side positioning block (202).

8. A wind power installation level survey equipment according to claim 7, characterized in that: The foot positioning assembly (3) comprises a second auxiliary gear (302) meshedly mounted on the outside of another first auxiliary gear (208), and the second auxiliary gear (302) is rotatably mounted on the bottom of the side positioning block (202).

9. A wind power installation level survey equipment according to claim 8, characterized in that: A hollow positioning column (301) is hingedly connected inside the side positioning block (202); a hollow insertion rod (304) is slidably mounted on one side of the hollow positioning column (301); a supporting tilting component (303) is fixedly mounted on one side of the hollow insertion rod (304); a telescopic transmission wheel rack (306) is rotatably mounted on the outer side of the second auxiliary gear (302); a hollow insertion rod (304) is rotatably mounted on the side of the telescopic transmission wheel rack (306) away from the second auxiliary gear (302); and the hollow insertion rod (304) is rotatably mounted on the outer side of the hollow positioning column (301).

10. A wind power installation level survey equipment according to claim 9, characterized in that: A storage wheel rack block (307) is fixedly installed inside the hollow insertion rod (304), and the storage wheel rack block (307) is meshingly connected with a two-way guide gear (305) passing through one side of the hollow positioning column (301). A telescopic guide rod (403) is hinged on one side of the hollow positioning column (301), and the telescopic guide rod (403) is fixedly installed on the outside of the annular block (401).

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