An adjustable shield receiving sleeve

Abstract

This invention relates to the field of shield tunneling machine receiving device technology, specifically an adjustable shield tunneling receiving sleeve, including a first mounting base and a second mounting base. A first sleeve is disposed on the upper side of the first mounting base, and a second sleeve is disposed on the upper side of the second mounting base. A mounting adjustment component is installed on the lower side of the first mounting base through a support cavity, and a height adjustment component is disposed on the lower side of the mounting adjustment component. The mounting adjustment component enables 90° position adjustment of the first or second mounting base and enables movement adjustment of the first or second mounting base, thereby effectively improving the connection efficiency between the first and second sleeves. The height adjustment component enables adjustment of the usage height of the mounting adjustment component, ensuring good corresponding bearing effect between the mounting adjustment component and the support protrusion, thus improving the performance when the length of the receiving sleeve is changed.

Description

Technical Field

[0001] This invention relates to the field of shield machine receiving device technology, specifically an adjustable shield receiving sleeve. Background Technology

[0002] A tunnel boring machine (TBM) is a type of tunnel boring machine that uses the shield tunneling method. The TBM construction method involves the TBM constructing (laying) the "shield" (referring to supporting segments) of the tunnel while it is excavating, which is different from the open tunnel construction method.

[0003] During the operation of a tunnel boring machine, receiving sleeves of different lengths are required due to the varying lengths of the tunnels. However, the large size and weight of the receiving sleeves make it difficult to change their length after installation.

[0004] Existing shield receiving sleeves are difficult to lengthen due to their large volume, and require a significant amount of labor for length adjustment and transition, resulting in low efficiency and impacting construction progress. Therefore, an adjustable shield receiving sleeve is needed to address these issues. Summary of the Invention

[0005] To address the difficulty in adjusting the length of the shield receiving sleeve due to its large volume, which affects construction progress, this invention provides an adjustable shield receiving sleeve to solve the aforementioned problem.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] An adjustable shield receiving sleeve includes a first mounting base and a second mounting base. A first sleeve is provided on the upper side of the first mounting base, and a second sleeve is provided on the upper side of the second mounting base. Support cavities are provided on the lower sides of both the first and second mounting bases. A mounting adjustment component is installed on the lower side of the first mounting base through the support cavity, and a height adjustment component is provided on the lower side of the mounting adjustment component.

[0008] The loading and control assembly includes a loading frame, a positioning disc on the upper side of the loading frame, a support bracket rotatably mounted on the side of the positioning disc, a support tray mounted on the positioning disc via the support bracket, a support frame on the upper side of the support tray, a support wheel seat on the lower side of the support frame and located within the inner cavity of the support tray, a first drive motor on the right side of the loading frame, a drive gear on the drive end of the first drive motor, and a rack plate corresponding to the drive gear on the lower right side of the support tray. Loading plates are arranged on the upper left and right sides respectively. Loading shafts are evenly rotatably mounted on the loading plates. Support cylinders are arranged on the outer wall of the loading shafts and between the two sets of loading plates. A transmission sprocket is arranged on the left end of the loading shaft and on the inner side of the loading plate. Limiting sprockets are rotatably mounted on both the front and rear ends of the inner side wall of the left loading plate. A transition frame is arranged on the outer side of the right loading plate. A second drive motor is mounted on the transition frame. The drive end of the second drive motor is connected to the right end of one set of loading shafts by a coupling.

[0009] The height adjustment component includes a loading base frame. Lower limit adapter plates are correspondingly arranged on both the left and right sides of the loading base frame. A first support plate is rotatably mounted on the inner outer end of each lower limit adapter plate. A lower support rod is provided at the right end of the lower limit adapter plate. The two ends of the lower support rod are slidably connected to the lower limit adapter plate via lower positioning rollers. A second support plate is provided at both ends of the lower support rod and inside the lower positioning rollers. An upper support rod is provided at the upper end of the first support plate. Upper positioning rollers are provided at both ends of the upper support rod. An upper limit adapter plate is rotatably mounted on the upper end of the second support plate. The upper support rod is slidably connected to the upper limit adapter plate via the upper positioning rollers. The upper side of the upper limit adapter plate is provided with a receiving square tube, and multiple sets of reinforcing square tubes are evenly arranged on the lower side of the receiving square tube. An adapter cylinder seat is provided in the middle of the lower receiving rod. Push-pull rods are rotatably installed on the side of the adapter cylinder seat in a corresponding manner. Receiving square tubes are provided on the left and right sides of the middle of the end face of the loading base. Bearing seats are provided between the two sets of receiving square tubes in a corresponding manner. An adjusting shaft is rotatably installed on the bearing seat. Threaded sleeve seats are threaded on the outer wall of the adjusting shaft in a corresponding manner. The end of the push-pull rod away from the adapter cylinder seat is rotatably connected to the corresponding threaded sleeve seats in a corresponding manner. An adjusting motor is provided on the front side of the loading base corresponding to the adjusting shaft.

[0010] As a preferred embodiment of the present invention, the first and second mounting bases are provided with supporting protrusions in their supporting cavities, the first sleeve is provided with a transition part on its rear side, and the second sleeve is provided with a limiting transition ring plate on its inner front side. The transition part and the limiting transition ring plate are connected by fixing bolts.

[0011] As a preferred embodiment of the present invention, the pulley on the support base that engages with the positioning disc has an "I" shaped cross-section.

[0012] In a preferred embodiment of the present invention, the support frame is rotatably connected to the positioning disc via a support wheel seat.

[0013] As a preferred embodiment of the present invention, the rack plate is arranged in an arc shape, and the rack plate is connected to the support plate by fixing bolts.

[0014] As a preferred embodiment of the present invention, the supporting cylinder and the supporting protrusion are connected accordingly, and the spacing between the two sets of loading plates is adapted to match the supporting protrusion.

[0015] As a preferred embodiment of the present invention, the side cross-sections of the lower limit adapter plate and the upper limit adapter plate are arranged in a concave shape, the first support plate is rotatably connected to the lower limit adapter plate by a connecting shaft, and the second support plate is rotatably connected to the upper limit adapter plate by a connecting shaft.

[0016] As a preferred embodiment of the present invention, the two ends of the control shaft are rotatably connected through the loading base frame, and the drive end of the control motor is connected to the control shaft by a coupling.

[0017] As a preferred embodiment of the present invention, the front and rear outer side walls of the adjustment shaft are provided with opposite threaded grooves.

[0018] As a preferred embodiment of the present invention, the loading frame is fixedly connected to the upper side of the square tube.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] 1. In this invention, the transition part and the limiting transition ring plate enable convenient and stable positioning of the first sleeve and the second sleeve, thus achieving good positioning effect of the first sleeve and the second sleeve. The support protrusion provided in the support cavity enables the support effect of the mounting adjustment component on the first mounting base and the second mounting base, thus achieving high convenience of docking between the first sleeve and the second sleeve.

[0021] 2. In this invention, the mounting and adjusting component enables 90° position adjustment of the first or second mounting base and allows for movement adjustment of the first or second mounting base. This significantly improves the ease of adjustment and transition between the first and second sleeves, effectively enhancing the connection efficiency. The support bracket ensures good side positioning and support of the pallet, while the support wheel seat further strengthens the pallet's support stability, resulting in high stability during use. This also enhances the safety of the mounting and adjusting component. The arc-shaped rack and pinion plate improves the orientation adjustment of the mounting and adjusting component, resulting in good connection and adjustment between the first and second mounting bases. The two sets of loading plates provide good limiting effect for the support cylinder when supporting the support protrusion, thus ensuring high stability of the connection between the first and second sleeves.

[0022] 3. In this invention, the height adjustment component enables the adjustment of the usage height of the mounting adjustment component, resulting in good corresponding support between the mounting adjustment component and the supporting protrusion. Furthermore, the height adjustment component facilitates simple and convenient connection and separation between the mounting adjustment component and the supporting protrusion, thus improving the performance when changing the length between the first and second sleeves. The lower and upper limit transition plates ensure high stability during sliding adjustment of the first and second support plates, resulting in high stability of the height adjustment component's support adjustment of the mounting adjustment component. The opposite threaded grooves on the front and rear outer walls of the adjustment shaft improve the adjustment effect of the threaded sleeve seat on the push-pull rod, making the overall height adjustment of the height adjustment component simple and convenient. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 This is a schematic diagram of the connection structure between the mounting adjustment component and the height adjustment component of the present invention;

[0025] Figure 3 This is a schematic diagram of the mounting and control component structure of the present invention;

[0026] Figure 4 This is a partial structural diagram of the mounting and control component of the present invention. Figure 1 ;

[0027] Figure 5 This is a partial structural diagram of the mounting and control component of the present invention. Figure 2 ;

[0028] Figure 6 This is a partial structural diagram of the mounting and control component of the present invention. Figure 3 ;

[0029] Figure 7 This is a schematic diagram of the height control component structure of the present invention;

[0030] Figure 8 This is a schematic diagram of a partial structure of the height control component of the present invention. Figure 1 ;

[0031] Figure 9 This is a schematic diagram of a partial structure of the height control component of the present invention. Figure 2 .

[0032] In the diagram: 1. First mounting base; 101. First sleeve; 102. Adapter; 2. Second mounting base; 201. Second sleeve; 202. Limiting adapter ring plate; 3. Support cavity; 301. Supporting protrusion; 4. Mounting control assembly; 401. Loading frame; 402. Positioning disc; 403. Support bracket; 404. Supporting tray; 405. Support frame; 406. Supporting wheel seat; 407. First drive motor; 408. Drive gear; 409. Rack plate; 410. Loading plate; 411. Mounting shaft; 412. Supporting cylinder; 413. Transmission sprocket; 414. Limiting sprocket ; 415. Adapter frame; 416. Second drive motor; 5. Height adjustment assembly; 501. Loading base frame; 502. Lower limit adapter plate; 503. First support plate; 504. Lower support rod; 505. Lower positioning roller; 506. Second support plate; 507. Upper support rod; 508. Upper positioning roller; 509. Upper limit adapter plate; 510. Supporting square tube; 511. Reinforced square tube; 512. Adapter sleeve seat; 513. Push-pull rod; 514. Supporting square tube; 515. Bearing seat; 516. Adjustment shaft; 517. Threaded sleeve seat; 518. Adjustment motor; 519. Connecting shaft. Detailed Implementation

[0033] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0034] Example: Please refer to Figure 1-9An adjustable shield receiving sleeve is shown, including a first mounting base 1 and a second mounting base 2. A first sleeve 101 is provided on the upper side of the first mounting base 1, and a second sleeve 201 is provided on the upper side of the second mounting base 2. Support cavities 3 are provided on the lower sides of both the first mounting base 1 and the second mounting base 2. A mounting adjustment component 4 is installed on the lower side of the first mounting base 1 through the support cavity 3, and a height adjustment component 5 is provided on the lower side of the mounting adjustment component 4.

[0035] The first mounting base 1 and the second mounting base 2 are provided with a supporting protrusion 301 in the supporting cavity 3. The first sleeve 101 is provided with a transition part 102 on the rear side. The second sleeve 201 is provided with a limiting transition ring plate 202 on the front side of the interior. The transition part 102 and the limiting transition ring plate 202 are connected by fixing bolts.

[0036] The adapter 102 and the limiting adapter ring 202 enable convenient and stable positioning of the first sleeve 101 and the second sleeve 201, resulting in good positioning of the first sleeve 101 and the second sleeve 201. The support protrusion 301 provided in the support cavity 3 enables the support effect of the mounting adjustment component 4 on the first mounting base 1 and the second mounting base 2, resulting in convenient docking between the first sleeve 101 and the second sleeve 201.

[0037] In this embodiment, reference is made to Figure 1-6As shown, the loading and control assembly 4 includes a loading frame 401. A positioning disc 402 is provided on the upper side of the loading frame 401. A support bracket 403 is rotatably mounted on the side of the positioning disc 402. A support tray 404 is mounted on the positioning disc 402 through the support bracket 403. A support frame 405 is provided on the upper side of the support tray 404. A support wheel seat 406 is provided on the lower side of the support frame 405 and located in the inner cavity of the support tray 404. A first drive motor 407 is provided on the right side of the loading frame 401. A drive gear 408 is provided at the drive end of the first drive motor 407. A rack plate 409 corresponding to the drive gear 408 is provided on the lower right side of the support tray 404. Loading plates 410 are provided on the upper left and right sides of the support frame 405. A loading shaft 411 is rotatably mounted on the loading plate 410. The outer wall of the loading shaft 411 and located on the two sets of loading plates 410 are connected to the loading plates 410. A support cylinder 412 is provided between the 10 and the 10. A transmission sprocket 413 is provided at the left end of the mounting shaft 411 and inside the loading plate 410. Limiting sprockets 414 are rotatably installed at both the front and rear ends of the inner sidewall of the left loading plate 410. A transition frame 415 is provided on the outside of the right loading plate 410. A second drive motor 416 is installed on the transition frame 415. The drive end of the second drive motor 416 is connected to the right end of one of the mounting shafts 411 by a coupling. The mounting adjustment component 4 can realize 90° position adjustment of the first mounting base 1 or the second mounting base 2, and can realize movement adjustment of the first mounting base 1 or the second mounting base 2. This makes the adjustment and transition between the first sleeve 101 and the second sleeve 201 convenient and effectively improves the connection efficiency between the first sleeve 101 and the second sleeve 201.

[0038] The pulley on the support bracket 403, which engages with the positioning disc 402, has an "I"-shaped cross-section. The support frame 405 is rotatably connected to the positioning disc 402 via the support wheel seat 406. The support bracket 403 provides good side positioning and support for the support tray 404, while the support wheel seat 406 further enhances the support stability of the support tray 404, resulting in high support stability during use and thus high safety when using the control assembly 4.

[0039] The rack plate 409 has an arc-shaped structure and is connected to the support plate 404 by fixing bolts. The support cylinder 412 is connected to the support protrusion 301. The spacing between the two sets of loading plates 410 is adapted to match the support protrusion 301. The arc-shaped structure of the rack plate 409 enables good control of the orientation of the support adjustment component 4, thus improving the control effect of the first support base 1 and the second support base 2. The two sets of loading plates 410 enable good limiting effect of the support cylinder 412 when supporting the support protrusion 301, thus ensuring high stability of the support and transfer between the first sleeve 101 and the second sleeve 201.

[0040] In this embodiment, reference is made to Figure 1 , Figure 2 , Figure 7-9 As shown, the height adjustment component 5 includes a loading base 501. Lower limit adapter plates 502 are correspondingly arranged on both the left and right sides of the loading base 501. A first support plate 503 is rotatably mounted on the inner and outer ends of the lower limit adapter plate 502. A lower support rod 504 is provided on the right end of the lower limit adapter plate 502. The two ends of the lower support rod 504 are slidably connected to the lower limit adapter plate 502 via lower positioning rollers 505. A second support plate 506 is provided on both ends of the lower support rod 504 and inside the lower positioning rollers 505. An upper support rod 507 is provided on the upper end of the first support plate 503. Upper positioning rollers 508 are provided on both ends of the upper support rod 507. An upper limit adapter plate 509 is rotatably mounted on the upper end of the second support plate 506. The upper support rod 507 slides against the upper limit adapter plate 509 via the upper positioning rollers 508. The upper side of the upper limit adapter plate 509 is provided with a receiving square tube 510, and multiple sets of reinforcing square tubes 511 are evenly arranged on the lower side of the receiving square tube 510. The middle of the lower receiving rod 504 is provided with an adapter cylinder seat 512. The sides of the adapter cylinder seat 512 are rotatably mounted with push-pull rods 513. The middle of the end face of the loading base 501 is provided with receiving square tubes 514 on the left and right. The two sets of receiving square tubes 514 are provided with bearing seats 515 on the front and back. The bearing seats 515 are rotatably mounted with an adjustment shaft 516. The outer wall of the adjustment shaft 516 is threaded with threaded sleeve seats 517 on the front and back. The end of the push-pull rod 513 away from the adapter cylinder seat 512 is rotatably connected to the corresponding front and back threaded sleeve seats 517. The front side of the loading base 501 is provided with an adjustment motor 518 corresponding to the adjustment shaft 516. The height adjustment component 5 can be used to adjust the height of the mounting adjustment component 4, so that the corresponding bearing effect between the mounting adjustment component 4 and the supporting protrusion 301 is good. Furthermore, by adjusting the height of the mounting adjustment component 4, the connection and separation between the mounting adjustment component 4 and the supporting protrusion 301 can be simple and convenient, thus making the use effect good when the length of the first sleeve 101 and the second sleeve 201 is changed.

[0041] The lower limit adapter plate 502 and the upper limit adapter plate 509 have a concave cross-section. The first support plate 503 is rotatably connected to the lower limit adapter plate 502 via a connecting shaft 519, and the second support plate 506 is rotatably connected to the upper limit adapter plate 509 via a connecting shaft 519. This structural design of the lower limit adapter plate 502 and the upper limit adapter plate 509 ensures high stability of the first support plate 503 and the second support plate 506 during sliding adjustment, thereby providing high stability for the height adjustment component 5 in supporting and adjusting the mounting adjustment component 4.

[0042] The two ends of the control shaft 516 are rotatably connected through the loading base 501. The drive end of the control motor 518 is connected to the control shaft 516 via a coupling. Opposite threaded grooves are provided on the front and rear outer side walls of the control shaft 516. By providing opposite threaded grooves on the front and rear outer side walls of the control shaft 516, the threaded sleeve seat 517 can effectively control the push-pull rod 513, thus making the overall height control of the height control assembly 5 simple and convenient.

[0043] In this adjustable shield receiving sleeve, the control motor 518 rotates the control shaft 516 during operation. During the rotation of the control shaft 516, the two sets of threaded sleeve seats 517 are subjected to rotational forces in different directions, causing the two sets of threaded sleeve seats 517 to move closer or further apart simultaneously, thereby adjusting the angle between the two sets of push-pull rods 513. When the angle between the two sets of push-pull rods 513 increases, the lower receiving rod 504 is pulled, increasing the included angle between the first support plate 503 and the second support plate 506, thus lowering the height of the mounting square tube 510 and consequently lowering the height of the mounting control component 4. Conversely, when the angle between the two sets of push-pull rods 513 decreases, the height of the mounting control component 4 increases, making the connection and separation between the mounting control component 4 and the first mounting base 1 and the second mounting base 2 simple and convenient. By setting the first support plate 503 and the second support plate 506 on both sides, the mounting stability of the mounting square tube 510 is high.

[0044] The first drive motor 407 drives the drive gear 408 to rotate, causing the rack plate 409 to rotate and move under the action of the drive gear 408, thereby realizing the rotation of the support tray 404. This allows the use direction of the support frame 405 to be adjusted. During the rotation adjustment of the support tray 404, the support wheel seat 406 and the support card seat 403 provide rotational support, ensuring high stability and safety of the support tray 404 during use. Under the adjustment of the support frame 405, the support cylinder 412 and the support protrusion 301 are aligned. The second drive motor 416 drives the rotation of one set of mounting shafts 411. Then, under the action of the transmission sprocket 413, multiple sets of mounting shafts 411 rotate simultaneously, causing the support cylinder 412 to move relative to the support protrusion 301. This enables the adjustment and installation of the first mounting base 1 and the second mounting base 2. When the transmission sprocket 413 is working, the limiting sprocket 414 limits the chain, ensuring a better driving connection between the chain and the transmission sprocket 413.

[0045] The adapter 102 and the limiting adapter ring 202 enable convenient and stable positioning of the first sleeve 101 and the second sleeve 201, resulting in good positioning of the first sleeve 101 and the second sleeve 201. The support protrusion 301 provided in the support cavity 3 enables the support effect of the mounting adjustment component 4 on the first mounting base 1 and the second mounting base 2, resulting in convenient docking between the first sleeve 101 and the second sleeve 201.

[0046] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An adjustable shield receiving sleeve comprising a first receiving base (1) and a second receiving base (2), characterized in that: A first sleeve (101) is provided on the upper side of the first mounting base (1), and a second sleeve (201) is provided on the upper side of the second mounting base (2). A support cavity (3) is provided on the lower side of both the first mounting base (1) and the second mounting base (2). A mounting adjustment component (4) is installed on the lower side of the first mounting base (1) through the support cavity (3). A height adjustment component (5) is provided on the lower side of the mounting adjustment component (4). The loading and control assembly (4) includes a loading frame (401), a positioning disc (402) is provided on the upper side of the loading frame (401), a support bracket (403) is rotatably mounted on the side of the positioning disc (402), a support tray (404) is mounted on the positioning disc (402) through the support bracket (403), a support frame (405) is provided on the upper side of the support tray (404), a support wheel seat (406) is provided on the lower side of the support frame (405) and located in the inner cavity of the support tray (404), a first drive motor (407) is provided on the right side of the loading frame (401), a drive gear (408) is provided at the drive end of the first drive motor (407), and a rack plate (409) corresponding to the drive gear (408) is provided on the lower right side of the support tray (404). The upper side of the support frame (405) is provided with loading plates (410) on the left and right sides respectively. The loading plates (410) are uniformly rotatably mounted with bearing shafts (411). The outer wall of the bearing shafts (411) and located between the two sets of loading plates (410) is provided with a support cylinder (412). The left end of the bearing shafts (411) and located inside the loading plates (410) is provided with a transmission sprocket (413). The front and rear ends of the inner side wall of the left loading plate (410) are rotatably mounted with limit sprockets (414). The outer side of the right loading plate (410) is provided with a transition frame (415). The transition frame (415) is equipped with a second drive motor (416). The drive end of the second drive motor (416) is connected to the right end of one set of bearing shafts (411) by a coupling. The height adjustment component (5) includes a loading base frame (501). Lower limit adapter plates (502) are correspondingly arranged on both the left and right sides of the loading base frame (501). A first support plate (503) is rotatably mounted on the outer end of the inner side of the lower limit adapter plate (502). A lower support rod (504) is provided on the right end of the lower limit adapter plate (502). The two ends of the lower support rod (504) are slidably connected to the lower limit adapter plate (502) by lower positioning rollers (505). A second support plate (506) is provided at both ends of the lower support rod (504) and inside the lower positioning roller (505). An upper support rod (507) is provided at the upper end of the first support plate (503). Upper positioning rollers (508) are provided at both ends of the upper support rod (507). An upper limit transition plate (509) is rotatably mounted on the upper end of the second support plate (506). The upper support rod (507) is slidably connected to the upper limit transition plate (509) through the upper positioning rollers (508). Next, a receiving square tube (510) is provided on the upper side of the upper limit adapter plate (509), and multiple sets of reinforcing square tubes (511) are evenly arranged on the lower side of the receiving square tube (510). An adapter cylinder seat (512) is provided in the middle of the lower receiving rod (504). A push-pull rod (513) is rotatably installed on the side of the adapter cylinder seat (512) in a front-to-back manner. A receiving square tube (514) is provided on the left and right sides of the middle of the end face of the loading base frame (501). Two sets of receiving square tubes (514) are provided. 4) Bearing seats (515) are provided in front and behind each other. An adjustment shaft (516) is rotatably installed on the bearing seat (515). Threaded sleeve seats (517) are threadedly installed on the outer wall of the adjustment shaft (516) in front and behind. The end of the push-pull rod (513) away from the adapter sleeve seat (512) is rotatably connected to the corresponding threaded sleeve seats (517) in front and behind. An adjustment motor (518) is provided on the front side of the loading base (501) in relation to the adjustment shaft (516).

2. The adjustable shield receiving sleeve according to claim 1, characterized in that: The first mounting base (1) and the second mounting base (2) are provided with a supporting protrusion (301) in the supporting cavity (3). The first sleeve (101) is provided with a connecting part (102) on the rear side. The second sleeve (201) is provided with a limiting connecting ring plate (202) on the front side of the interior. The connecting part (102) and the limiting connecting ring plate (202) are connected by fixing bolts.

3. An adjustable shield receiving sleeve according to claim 1, characterized in that: The pulley on the support bracket (403) that engages with the positioning disc (402) has an "I" shaped cross-section.

4. An adjustable shield receiving sleeve according to claim 1, characterized in that: The support frame (405) is rotatably connected to the positioning disc (402) via the support wheel seat (406).

5. An adjustable shield receiving sleeve according to claim 1, characterized in that: The rack plate (409) is arranged in an arc shape and is connected to the support plate (404) by fixing bolts.

6. An adjustable shield receiving sleeve according to claim 2, characterized in that: The supporting cylinder (412) and the supporting protrusion (301) are connected accordingly, and the spacing between the two sets of loading plates (410) is adapted to match the supporting protrusion (301).

7. An adjustable shield receiving sleeve according to claim 1, characterized in that: The lower limit adapter plate (502) and the upper limit adapter plate (509) have a concave cross-section. The first support plate (503) is rotatably connected to the lower limit adapter plate (502) by a connecting shaft (519), and the second support plate (506) is rotatably connected to the upper limit adapter plate (509) by a connecting shaft (519).

8. An adjustable shield receiving sleeve according to claim 1, characterized in that: The two ends of the control shaft (516) are rotatably connected through the loading base frame (501), and the drive end of the control motor (518) is connected to the control shaft (516) by a coupling.

9. An adjustable shield receiving sleeve according to claim 1, characterized in that: The front and rear outer side walls of the control shaft (516) are provided with opposite threaded grooves.

10. An adjustable shield receiving sleeve according to claim 1, characterized in that: The loading frame (401) is fixedly connected to the upper side of the mounting square tube (510).

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