Geological and geotechnical investigation strength test device

Abstract

The invention belongs to the technical field of geology and geotechnical investigation, and particularly relates to a geology and geotechnical investigation strength testing device which comprises a base and a mounting frame mounted at the top of the base, a rotating module is mounted on the base, and the rotating module comprises a rotating motor, a driving gear, a rotating column, a test bed, a driven gear, a geotechnical positioning groove and a guide slide way. A rock-soil test is completed through the rock-soil test module, the tested rock-soil is continuously and rotationally conveyed through the rotating module, and when rock-soil scraps after the test are conveyed to a release part on a baffle plate, a blocking plate on an automatic stone scrap removing module slides outwards under the action of a reset spring to reset, so that the rock-soil scraps are discharged from the baffle plate, and the rock-soil scraps are discharged from the baffle plate. At the moment, the plugging plate and a rock-soil positioning groove in the rotating module are staggered, rock-soil scraps in the rock-soil positioning groove can automatically fall into a rock-soil collecting device to be collected, the rock-soil scraps in the rock-soil positioning groove can be rapidly and automatically cleaned, manual cleaning is not needed, and the test efficiency can be effectively improved.

Description

Technical Field

[0001] The invention belongs to the technical field of geological and rock-soil exploration, and in particular relates to a geological and rock-soil exploration strength test device. Background Art

[0002] The field of geological engineering is a leading engineering field that serves the national economic construction, with natural sciences and earth sciences as its theoretical basis, geological surveys, surveys and explorations of mineral resources, and engineering problems related to the geological structure and geological background of major projects as its main objects, and geology, geophysics and geochemistry, mathematical geological methods, remote sensing technology, testing technology, and computer technology as its means.

[0003] During geological surveys, it is necessary to test the strength of geological rock and soil to detect the strength and looseness of the rock and soil. Existing test devices generally directly expose the rock under the pressure head for strength tests. In the process of applying pressure to the rock and soil, rock fragments will pop out and cause damage to the surrounding area, and the crushed rock and soil need to be cleaned manually, which not only increases labor costs, but also greatly reduces the efficiency of the test.

[0004] In order to solve the above problems, this application proposes a geological and rock soil exploration strength test device. Summary of the invention

[0005] The present invention provides a geological rock and soil exploration strength test device, which can effectively solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solutions: a geological and geotechnical exploration strength test device, comprising a base and a mounting frame mounted on the top of the base;

[0007] A rotating module is installed on the base, and the rotating module includes a rotating motor, a driving gear, a rotating column, a test bench, a driven gear, a rock and soil positioning groove, and a guide slideway;

[0008] The bottom of the rotating module is equidistantly provided with an automatic stone chip removal module, which includes a first plate, a slide bar, a pressing plate, a connecting plate, a blocking plate, a return spring, a pulley assembly, and a slider;

[0009] A shielding plate is fixedly provided on one side of the mounting frame, and the shielding plate comprises a plate body and a release portion;

[0010] A geotechnical test module is installed on the top of the mounting frame, and the geotechnical test module includes a hydraulic push rod, a pressure plate, a pin rod, a shielding cover, a spring member, a pressure rod, a pressure sensor, and a pressure head;

[0011] A rock and soil collecting device is fixedly provided on the top of the base, and the rock and soil collecting device comprises a box body, a collecting drawer, a cover plate mounting groove, a mounting rod, a torque spring, a rotating sleeve, a cover plate, and a surrounding plate.

[0012] As a preferred geological and geotechnical exploration strength test device of the present invention, the rotating motor is fixedly installed on the top of the base, the driving gear is fixedly set at the end of the output shaft of the rotating motor, the rotating column is rotatably set on the base through a bearing, the test bench and the driven gear are respectively fixedly set at the upper and lower ends of the rotating column, the geotechnical positioning grooves are equidistantly opened on the test bench, and guide slideways are opened on both sides of the geotechnical positioning grooves at the bottom of the test bench.

[0013] As a preferred geological and rock exploration strength test device of the present invention, the driving gear and the driven gear are meshingly connected.

[0014] As a preferred geological and geotechnical exploration strength test device of the present invention, the first plate is fixedly installed on the bottom of the test bench, the sliding rod is movably inserted on the first plate, the pressing plate and the connecting plate are respectively fixedly arranged at both ends of the sliding rod, a sealing plate is fixedly connected to the top of the connecting plate, the return spring is sleeved on the outside of one end of the sliding rod, and the pulley assembly is fixedly arranged on one side of the pressing plate.

[0015] As a preferred embodiment of a geological and rock exploration strength test device of the present invention, the sliding block is fixedly arranged on the top of the blocking plate, and the sliding block matches the guide slideway.

[0016] As a preferred embodiment of a geological and rock exploration strength test device of the present invention, the plate body is fixedly mounted on a mounting frame, and the release portion is arranged on a side of the plate body away from the mounting frame.

[0017] As a preferred geological and geotechnical exploration strength test device of the present invention, the hydraulic push rod is fixedly installed on the top of the mounting frame, the pressure plate is fixedly installed on the bottom end of the hydraulic push rod, the pin rod is slidably inserted on the pressure plate, the shielding cover is fixedly installed at the bottom end of the pin rod, the spring part is sleeved on the outside of the pin rod, the pressure rod is fixedly installed on the bottom of the pressure plate, and the bottom end of the pressure rod is fixedly connected to the pressure head through a pressure sensor.

[0018] As a preferred geological and rock exploration strength test device of the present invention, the shielding cover is slidably sleeved on the outside of the pressure rod, and the pressure head is retracted into the shielding cover under normal conditions.

[0019] As a preferred geological and geotechnical exploration strength test device of the present invention, the box body is fixedly installed on the top of the base, the collection drawer is slidably inserted in the box body, a cover plate mounting groove is opened on the top of the box body, a mounting rod is fixedly provided on one side inside the cover plate mounting groove, the outer side of the mounting rod is connected to a rotating sleeve through a torque spring, and the enclosure is fixedly provided on the top of the box body.

[0020] As a preferred geological and geotechnical exploration strength test device of the present invention, one end of the torque spring is fixedly connected to the mounting rod and the other end is fixedly connected to the rotating sleeve, and the cover plate is fixedly arranged on one side of the rotating sleeve.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] By setting up a rotating module, the rotating module can rotate and transport the rock and soil to be tested, so that the rock and soil test module can conduct continuous tests on multiple groups of rock and soil, which is convenient for obtaining multiple groups of data, simple operation, time-saving and labor-saving;

[0023] After the rock and soil to be tested is transported to the bottom of the geotechnical test module through the rotating module, the hydraulic push rod on the geotechnical test module drives the pressure plate to move downward, and the rock and soil can be squeezed through the pressure head. The squeezing force can be detected by the pressure sensor, which is convenient for recording the test data. By setting a shielding cover, the rock fragments that jump out during the pressure process can be shielded to avoid the damage caused by the rock fragments jumping out to the surrounding area;

[0024] After the geotechnical test is completed through the geotechnical test module, the rock and soil after the test is continued to be rotated and transported through the rotating module. When the rock and soil waste after the test is transported to the release part on the shielding plate, the sealing plate on the automatic stone chip removal module will slide outward for reset under the action of the reset spring. At this time, the sealing plate and the geotechnical positioning groove on the rotating module are misaligned, and the rock and soil waste in the geotechnical positioning groove will automatically fall into the geotechnical collection device for collection. The rock and soil waste in the geotechnical positioning groove can be quickly and automatically cleaned without manual cleaning, which can effectively improve the efficiency of the test. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0026] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0027] Figure 2 For the present invention Figure 1 A is an enlarged structural diagram;

[0028] Figure 3It is a bottom view structural schematic diagram of the present invention;

[0029] Figure 4 It is a structural schematic diagram of the shielding plate in the present invention;

[0030] Figure 5 It is a bottom view structural schematic diagram of the test bench in the present invention;

[0031] Figure 6 For the present invention Figure 5 The enlarged structural diagram at B in FIG.

[0032] Figure 7 It is a schematic cross-sectional view of the rock and soil collection device of the present invention;

[0033] Figure 8 For the present invention Figure 7 The enlarged structural diagram at C in the figure.

[0034] In the figure:

[0035] 1. Base;

[0036] 2. Mounting frame;

[0037] 3. Rotation module; 301. Rotation motor; 302. Driving gear; 303. Rotation column; 304. Test bench; 305. Driven gear; 306. Geotechnical positioning groove; 307. Guide slideway;

[0038] 4. Automatic stone chip removal module; 401. First plate; 402. Sliding rod; 403. Pressing plate; 404. Connecting plate; 405. Blocking plate; 406. Return spring; 407. Pulley assembly; 408. Sliding block;

[0039] 5. shielding plate; 501. plate body; 502. release portion;

[0040] 6. Geotechnical test module; 601. Hydraulic push rod; 602. Press plate; 603. Pin rod; 604. Shielding cover; 605. Spring member; 606. Press rod; 607. Pressure sensor; 608. Press head;

[0041] 7. Geotechnical collection device; 701. Box body; 702. Collection drawer; 703. Cover plate mounting groove; 704. Mounting rod; 705. Torque spring; 706. Rotating sleeve; 707. Cover plate; 708. Enclosure. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only 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 creative work are within the scope of protection of the present invention.

[0043] Examples, such as Figure 1-8 As shown, a geological and rock exploration strength test device comprises a base 1 and a mounting frame 2 mounted on the top of the base 1;

[0044] A rotating module 3 is installed on the base 1, and the rotating module 3 includes a rotating motor 301, a driving gear 302, a rotating column 303, a test bench 304, a driven gear 305, a rock and soil positioning groove 306, and a guide slide 307;

[0045] The rotating motor 301 is fixedly mounted on the top of the base 1, the driving gear 302 is fixedly mounted on the end of the output shaft of the rotating motor 301, the rotating column 303 is rotatably mounted on the base 1 through the bearing, the test bench 304 and the driven gear 305 are respectively fixedly mounted on the upper and lower ends of the rotating column 303, the rock and soil positioning grooves 306 are equidistantly arranged on the test bench 304, and guide slideways 307 are arranged on both sides of the rock and soil positioning grooves 306 at the bottom of the test bench 304, the driving gear 302 is meshedly connected with the driven gear 305, and during the test, the rock and soil to be tested is first placed in a group of rock and soil positioning grooves 306 located at the front side, and then Turn on the rotating motor 301 on the rotating module 3. The rotating motor 301 can drive the rotating column 303 to rotate through the driving gear 302 and the driven gear 305. When the rotating column 303 rotates, it can drive the test bench 304 to rotate and rotate and transport the rock and soil to be tested. When the test bench 304 rotates 90 degrees to transport the rock and soil to be tested to the bottom of the geotechnical test module 6, the geotechnical test module 6 can quickly test the rock and soil. The rock and soil samples can be transported while being tested, so that the geotechnical test module 6 can continuously test multiple groups of rock and soil, which is convenient for obtaining multiple groups of data. The operation is simple, saving time and effort.

[0046] The bottom of the rotating module 3 is equidistantly provided with an automatic chip removal module 4, which includes a first plate 401, a slide bar 402, a pressing plate 403, a connecting plate 404, a blocking plate 405, a return spring 406, a pulley assembly 407, and a slider 408;

[0047] The first plate 401 is fixedly installed at the bottom of the test bench 304, the slide bar 402 is movably inserted on the first plate 401, the pressing plate 403 and the connecting plate 404 are respectively fixedly arranged at both ends of the slide bar 402, the top of the connecting plate 404 is fixedly connected with a blocking plate 405, the return spring 406 is sleeved on the outside of one end of the slide bar 402, and the pulley assembly 407 is fixedly arranged on one side of the pressing plate 403. After the geotechnical test is completed by the geotechnical test module 6, the tested geotechnical is continuously rotated and transported by the rotating module 3. When the rock and soil waste after the test is transported to the release portion 502 on the shielding plate 5, the blocking plate 405 on the automatic stone chip removal module 4 will slide outward to reset under the action of the reset spring 406. At this time, the blocking plate 405 is misaligned with the rock and soil positioning groove 306 on the rotating module 3, and the rock and soil waste in the rock and soil positioning groove 306 will automatically fall into the rock and soil collection device 7 for collection, which can quickly and automatically clean the rock and soil waste in the rock and soil positioning groove 306 without manual cleaning, which can effectively improve the efficiency of the test;

[0048] The slider 408 is fixedly arranged on the top of the blocking plate 405, and the slider 408 matches the guide slide 307. The blocking plate 405 can be slidably installed on the bottom of the test bench 304 through the slider 408 and the guide slide 307;

[0049] A shielding plate 5 is fixedly provided on one side of the mounting frame 2, and the shielding plate 5 includes a plate body 501 and a release portion 502;

[0050] The plate body 501 is fixedly mounted on the mounting frame 2, and the release portion 502 is arranged on a side of the plate body 501 away from the mounting frame 2;

[0051] A geotechnical test module 6 is installed at the top of the mounting frame 2, and the geotechnical test module 6 includes a hydraulic push rod 601, a pressure plate 602, a pin rod 603, a shielding cover 604, a spring member 605, a pressure rod 606, a pressure sensor 607, and a pressure head 608;

[0052] The hydraulic push rod 601 is fixedly mounted on the top of the mounting frame 2, the pressure plate 602 is fixedly mounted on the bottom of the hydraulic push rod 601, the pin rod 603 is slidably inserted on the pressure plate 602, the shielding cover 604 is fixedly mounted on the bottom of the pin rod 603, the spring member 605 is sleeved on the outside of the pin rod 603, the pressure rod 606 is fixedly mounted on the bottom of the pressure plate 602, the bottom of the pressure rod 606 is fixedly connected to the pressure head 608 through the pressure sensor 607, the shielding cover 604 is slidably sleeved on the outside of the pressure rod 606, and the pressure head 608 is retracted in the shielding cover 604 in the normal state, and the rock to be tested is rotated by the rotating module 3. After the soil is transported to the bottom of the geotechnical test module 6, the hydraulic push rod 601 on the geotechnical test module 6 drives the pressure plate 602 to move downward. During the downward movement, the shielding cover 604 first contacts the test bench 304. After the shielding cover 604 contacts the test bench 304, the hydraulic push rod 601 is continuously controlled to press downward. The rock and soil can be subjected to an extrusion test through the pressure head 608. During the extrusion test, the extrusion force can be detected by the pressure sensor 607, which is convenient for recording the test data. The shielding cover 604 can shield the rock fragments that pop out during the pressure application process, so as to prevent the rock fragments from causing damage to the surrounding areas.

[0053] A rock and soil collecting device 7 is fixedly provided on the top of the base 1, and the rock and soil collecting device 7 includes a box body 701, a collecting drawer 702, a cover plate mounting groove 703, a mounting rod 704, a torque spring 705, a rotating sleeve 706, a cover plate 707, and a surrounding plate 708;

[0054] The box body 701 is fixedly installed on the top of the base 1, and the collection drawer 702 is slidably inserted in the box body 701. A cover plate mounting groove 703 is opened on the top of the box body 701, and a mounting rod 704 is fixedly arranged on one side of the cover plate mounting groove 703. The outer side of the mounting rod 704 is connected to the rotating sleeve 706 through a torque spring 705. One end of the torque spring 705 is fixedly connected to the mounting rod 704 and the other end is fixedly connected to the rotating sleeve 706. The cover plate 707 is fixedly arranged on one side of the rotating sleeve 706, and the enclosure plate 708 is fixedly arranged on the top of the box body 701. When the rock and soil waste after the test is transported to the release part 502 on the shielding plate 5, the blocking plate 405 on the automatic stone chip removal module 4 will slide outward under the action of the reset spring 406. The rock and soil waste in the rock and soil positioning groove 306 will automatically fall onto the rock and soil collecting device 7. After the rock and soil waste automatically falls onto the rock and soil collecting device 7, the rock and soil waste will use its own gravity to press down and open the cover plate 707, and finally fall into the rock and soil collecting device 7 along the slope of the cover plate 707 surface for collection. After the rock and soil waste falls into the rock and soil collecting device 7, the cover plate 707 will automatically reset under the elastic force of the torque spring 705, and the rock and soil collecting device 7 can be automatically sealed. The collection drawer 702 can be pulled out to clean the collected rock and soil waste, and the enclosure 708 can block the rock and soil waste to prevent it from spilling.

[0055] In this embodiment, during the test, the rock and soil to be tested is first placed in a set of rock and soil positioning grooves 306 located at the front side, and then the rotating motor 301 on the rotating module 3 is turned on. The rotating motor 301 can drive the rotating column 303 to rotate through the driving gear 302 and the driven gear 305. When the rotating column 303 rotates, it can drive the test bench 304 to rotate and rotate and transport the rock and soil to be tested. When the test bench 304 rotates 90 degrees to transport the rock and soil to be tested to the bottom of the rock and soil test module 6, the rock and soil test module 6 is adjusted. The hydraulic push rod 601 on the top drives the pressure plate 602 to move downward. During the downward movement of the pressure plate 602, the shielding cover 604 first contacts the test bench 304. After the shielding cover 604 contacts the test bench 304, the hydraulic push rod 601 is continuously controlled to press downward. The rock and soil can be subjected to an extrusion test through the pressure head 608. During the extrusion test, the extrusion force can be detected through the pressure sensor 607. The shielding cover 604 can shield the rock fragments that are ejected during the pressure application process, thereby preventing the rock fragments from causing damage to the surrounding areas.

[0056] After the geotechnical test is completed by the geotechnical test module 6, the tested geotechnical is continuously rotated and transported by the rotating module 3. When the tested geotechnical debris is transported to the release portion 502 on the shielding plate 5, the sealing plate 405 on the automatic stone chip removal module 4 will slide outward for reset under the action of the reset spring 406. At this time, the sealing plate 405 is misaligned with the geotechnical positioning groove 306 on the rotating module 3, and the geotechnical debris in the geotechnical positioning groove 306 will automatically fall onto the geotechnical collection device 7. After the geotechnical debris automatically falls onto the geotechnical collection device 7, the geotechnical debris will use its own gravity to press down and open the cover plate 707, and finally fall into the geotechnical collection device 7 along the slope of the cover plate 707 surface for collection. After the geotechnical debris falls into the geotechnical collection device 7, the cover plate 707 is under the elastic force of the torque spring 705. It will automatically reset and seal the rock and soil collection device 7 automatically. The collected rock and soil debris can be cleaned by pulling out the collection drawer 702. When the rock and soil debris in the rock and soil positioning groove 306 is cleaned, the rotation module 3 is controlled to rotate, and the pulley assembly 407 on the automatic stone chip removal module 4 rolls along the inner side of the shielding plate 5. The specific structure of the shielding plate 5 can be used to press the reset spring 406, so that the sealing plate 405 can move inward to continue to block the bottom of the rock and soil positioning groove 306. Not only can the rock and soil debris in the rock and soil positioning groove 306 be quickly and automatically cleaned, effectively improving the efficiency of the test, but also the test can be carried out while the rock and soil samples are transported, so that the rock and soil test module 6 can continuously test multiple groups of rock and soil, so as to obtain multiple groups of data.

[0057] It should be noted that the release portion 502 on the shielding plate 5 is configured as a smooth arc structure, and the pulley assembly 407 on the automatic stone chip removal module 4 can roll smoothly along the inner side of the shielding plate 5 .

[0058] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A geological and rock exploration strength test device, comprising a base (1) and a mounting frame (2) mounted on the top of the base (1); Features: A rotating module (3) is installed on the base (1), and the rotating module (3) comprises a rotating motor (301), a driving gear (302), a rotating column (303), a test bench (304), a driven gear (305), a rock and soil positioning groove (306), and a guide slideway (307); The bottom of the rotating module (3) is equidistantly provided with an automatic stone chip removal module (4), the automatic stone chip removal module (4) comprising a first plate (401), a slide bar (402), a pressing plate (403), a connecting plate (404), a blocking plate (405), a return spring (406), a pulley assembly (407), and a slider (408); A shielding plate (5) is fixedly provided on one side of the mounting frame (2), and the shielding plate (5) comprises a plate body (501) and a release portion (502); A geotechnical test module (6) is installed at the top of the mounting frame (2), and the geotechnical test module (6) comprises a hydraulic push rod (601), a pressure plate (602), a pin rod (603), a shielding cover (604), a spring member (605), a pressure rod (606), a pressure sensor (607), and a pressure head (608); A rock and soil collecting device (7) is fixedly provided on the top of the base (1), and the rock and soil collecting device (7) comprises a box body (701), a collecting drawer (702), a cover plate mounting groove (703), a mounting rod (704), a torque spring (705), a rotating sleeve (706), a cover plate (707), and a surrounding plate (708).

2. A geological and rock exploration strength test device according to claim 1, characterized in that: The rotating motor (301) is fixedly mounted on the top of the base (1), the driving gear (302) is fixedly mounted on the end of the output shaft of the rotating motor (301), the rotating column (303) is rotatably mounted on the base (1) via a bearing, the test bench (304) and the driven gear (305) are respectively fixedly mounted on the upper and lower ends of the rotating column (303), the rock and soil positioning grooves (306) are equidistantly arranged on the test bench (304), and guide slideways (307) are arranged on both sides of the rock and soil positioning grooves (306) at the bottom of the test bench (304).

3. A geological and rock exploration strength test device according to claim 2, characterized in that: The driving gear (302) and the driven gear (305) are meshingly connected.

4. A geological and rock exploration strength test device according to claim 3, characterized in that: The first plate (401) is fixedly installed at the bottom of the test bench (304), the sliding rod (402) is movably inserted into the first plate (401), the pressing plate (403) and the connecting plate (404) are respectively fixedly installed at both ends of the sliding rod (402), and a blocking plate (405) is fixedly connected to the top of the connecting plate (404). The return spring (406) is sleeved on the outside of one end of the sliding rod (402), and the pulley assembly (407) is fixedly installed on one side of the pressing plate (403).

5. A geological and rock exploration strength test device according to claim 4, characterized in that: The sliding block (408) is fixedly arranged on the top of the blocking plate (405), and the sliding block (408) matches the guide slideway (307).

6. A geological and rock exploration strength test device according to claim 1, characterized in that: The plate body (501) is fixedly mounted on the mounting frame (2), and the release portion (502) is arranged on a side of the plate body (501) away from the mounting frame (2).

7. A geological and rock exploration strength test device according to claim 1, characterized in that: The hydraulic push rod (601) is fixedly mounted on the top of the mounting frame (2), the pressure plate (602) is fixedly mounted on the bottom of the hydraulic push rod (601), the pin rod (603) is slidably inserted on the pressure plate (602), the shielding cover (604) is fixedly mounted on the bottom of the pin rod (603), the spring member (605) is sleeved on the outside of the pin rod (603), the pressure rod (606) is fixedly mounted on the bottom of the pressure plate (602), and the bottom of the pressure rod (606) is fixedly connected to the pressure head (608) through the pressure sensor (607).

8. A geological and rock exploration strength test device according to claim 7, characterized in that: The shielding cover (604) is slidably sleeved on the outside of the pressure rod (606), and the pressure head (608) is retracted into the shielding cover (604) in a normal state.

9. A geological and rock exploration strength test device according to claim 1, characterized in that: The box body (701) is fixedly mounted on the top of the base (1); the collection drawer (702) is slidably inserted in the box body (701); a cover plate mounting groove (703) is provided on the top of the box body (701); a mounting rod (704) is fixedly mounted on one side of the inside of the cover plate mounting groove (703); the outer side of the mounting rod (704) is connected to a rotating sleeve (706) via a torque spring (705); and the enclosure (708) is fixedly mounted on the top of the box body (701).

10. A geological and rock exploration strength test device according to claim 9, characterized in that: One end of the torque spring (705) is fixedly connected to the mounting rod (704) and the other end is fixedly connected to the rotating sleeve (706), and the cover plate (707) is fixedly arranged on one side of the rotating sleeve (706).

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