Self-deviation-adjusting middle trough

Abstract

The utility model provides a self-deviation-adjusting middle trough, and belongs to the technical field of underground transfer equipment. The self-deviation-adjusting middle trough comprises a trough body, a top sealing plate, a first linear telescopic device, a first connecting rod and a deviation adjusting device; the deviation adjusting device is arranged on the top sealing plate at the top of the tank body, the deviation adjusting device is connected with the movable end of the first linear telescopic device through the first connector, the first linear device stretches out and draws back to drive the first connecting rod to move, and then the first connecting rod drives the deviation adjusting device to rotate relative to the tank body; when the end, away from the groove body, of the deviation adjusting device rotates to make contact with the inner wall face of the roadway and interaction force is generated between the deviation adjusting device and the inner wall face of the roadway, the counter-acting force of the roadway to the deviation adjusting device acts on the groove body, the groove body is made to move, then the position of the groove body is adjusted, and therefore the automatic deviation adjusting function of the middle groove is achieved. The timeliness and effectiveness of deviation adjustment of the middle trough are improved, meanwhile, the workload of workers is reduced, and the efficiency of deviation adjustment of the middle trough is improved.

Description

Technical Field

[0001] The present application belongs to the technical field of underground transportation equipment, and in particular relates to a self-adjusting center-biased trough. Background Art

[0002] The chute screening and transfer machine is mainly used for screening and transferring coal underground. It is usually used in conjunction with the working face scraper conveyor, crusher and belt conveyor. The coal is screened by the working face conveyor through the chute screening and transfer machine, and then transferred to the retractable belt conveyor for transportation. When in use, the screening and transfer machine moves forward as a whole along the moving step of the working face conveyor.

[0003] However, during the forward movement of the chute screening transfer machine, the direction or width of the chute roadway changes, resulting in a high frequency of left-right position adjustment when the chute screening transfer machine moves forward. Frequent adjustment of the left-right position of the chute screening transfer machine is required. Currently, the adjustment of the chute screening transfer machine is generally achieved by using a single tool to adjust the middle chute. The workload is large and the adjustment effect is not good. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art or related technology.

[0005] In view of this, according to an embodiment of the present application, a self-adjusting middle groove is proposed, comprising:

[0006] Tank body;

[0007] A capping plate, which covers the tank body and is detachably connected to the tank body;

[0008] A first linear telescopic device, the first linear telescopic device is arranged on the capping plate;

[0009] A first connecting rod, the first connecting rod is rotatably connected to the capping plate, and a first end of the first connecting rod is connected to a movable end of the first linear telescopic device;

[0010] The deviation adjusting device is rotatably connected to the side wall of the trough body, and is movably connected to the second end of the first connecting rod. The deviation adjusting device adjusts the positional relationship between the trough body and the lane by contacting the lane wall.

[0011] In a feasible implementation, there are two first linear telescopic devices, which are arranged along the length direction of the trough body, and the two first linear telescopic devices are symmetrically arranged on the capping plate along the axis of the capping plate.

[0012] In a feasible implementation manner, the deviation adjustment device includes:

[0013] A second connecting rod, the second connecting rod is vertically arranged, and a first end of the second connecting rod is movably connected to a second end of the first connecting rod;

[0014] The second linear telescopic device is horizontally arranged and fixedly connected to the second end of the second connecting rod.

[0015] In a feasible implementation manner, the self-adjusting middle groove further comprises:

[0016] The contact portion is connected to the movable end of the second linear telescopic device.

[0017] In a feasible implementation manner, the contact portion is movably connected to the movable end of the second linear telescopic device.

[0018] In a feasible implementation manner, a ball head is provided on the movable end of the second linear telescopic device, the contact portion is sleeved on the ball head, and the contact portion can rotate relative to the ball head.

[0019] In a feasible implementation manner, the self-adjusting middle groove further comprises:

[0020] The movable hole is in a long strip shape and is arranged at the second end of the first connecting rod. The movable hole extends along the axis direction of the first connecting rod.

[0021] The first end of the second connecting rod is embedded in the movable hole, and the first end of the second connecting rod can move in the movable hole.

[0022] In a feasible implementation manner, the tank body comprises:

[0023] The main body is a hollow cavity with an opening at the top;

[0024] A connecting part, the connecting part is arranged on the outer wall of the main body, and the deviation adjusting device is hingedly connected to the connecting part;

[0025] The support part, the top surface of the support part is arranged parallel to the capping plate, the support part is arranged on the outer wall of the main body, and the support part is used to support the deviation adjusting device.

[0026] In a feasible implementation manner, the tank body comprises:

[0027] A first rib plate, which is vertically arranged on the outer wall of the main body and is welded to the connecting portion;

[0028] The second rib plate is vertically arranged on the outer wall of the main body, and the second rib plate is welded to the support portion.

[0029] In a feasible implementation manner, the capping plate includes:

[0030] A plate body, which is detachably connected to the tank body;

[0031] A fixing part, which is arranged on the plate body and connected to a fixing end of the first linear telescopic device;

[0032] A fixing pin is vertically arranged on the plate body, passes through the first connecting rod, and is rotatably connected to the first connecting rod.

[0033] Compared with the prior art, the self-adjusting center-biased slot of the present application has the following beneficial effects:

[0034] The self-adjusting middle trough provided in the embodiment of the present application includes a trough body, a capping plate, a first linear telescopic device, a first connecting rod and an adjusting device; the adjusting device is arranged on the capping plate at the top of the trough body, and the adjusting device is connected to the movable end of the first linear telescopic device by a first connection, so that the first linear device is telescopically driven to drive the first connecting rod to move, and then the adjusting device is driven to rotate relative to the trough body by the first connecting rod. When the end of the adjusting device away from the trough body rotates until it contacts the inner wall surface of the tunnel and an interaction force is generated between the adjusting device and the inner wall surface of the tunnel, the reaction force of the tunnel on the adjusting device is used to act on the trough body to move the trough body, and then the position of the trough body is adjusted, thereby realizing the automatic adjusting function of the middle trough, improving the timeliness and effectiveness of the adjustment of the middle trough, while reducing the workload of workers and improving the efficiency of the adjustment of the middle trough. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] By reading the detailed description of the preferred embodiment below, various other advantages and benefits will become clear to those of ordinary skill in the art. The accompanying drawings are only used for the purpose of illustrating the preferred embodiment and are not considered to be limitations of the present application. In addition, the same reference symbols are used to represent the same components throughout the accompanying drawings.

[0036] In the attached picture:

[0037] Figure 1 A schematic structural diagram of the first angle of the initial state of the self-adjusting middle groove of an embodiment provided by the present application;

[0038] Figure 2 A schematic structural diagram of the second angle of the initial state of the self-adjusting middle groove of an embodiment provided by the present application;

[0039] Figure 3 A schematic structural diagram of a self-adjusting middle slot in an embodiment provided in the present application;

[0040] Figure 4 A schematic structural diagram of a slot body of a self-adjusting middle slot according to an embodiment of the present application;

[0041] Figure 5A schematic structural diagram of a first angle of a self-adjusting middle groove capping plate according to an embodiment of the present application;

[0042] Figure 6 A schematic structural diagram of the second angle of the capping plate of the self-adjusting middle groove provided in an embodiment of the present application;

[0043] in, Figures 1 to 6 The corresponding relationship between the reference numerals and component names in the figure is:

[0044] 10. trough body; 11. capping plate; 12. first linear telescopic device; 13. first connecting rod; 14. deviation adjustment device; 15. contact part; 16. movable hole;

[0045] 101. main body; 102. connecting portion; 103. supporting portion; 104. first rib plate; 105. second rib plate;

[0046] 111, plate body; 112, fixing portion; 113, fixing pin;

[0047] 141. A second connecting rod; 142. A second linear telescopic device. DETAILED DESCRIPTION

[0048] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0049] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0050] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0051] The preferred embodiments of the present application are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present application and are not used to limit the present application.

[0052] like Figures 1 to 3 As shown, according to an embodiment of the present application, a self-adjusting middle trough is proposed, comprising: a trough body 10, a capping plate 11, a first linear telescopic device 12, a first connecting rod 13 and an adjusting device 14; the capping plate 11 is covered on the trough body 10, and the capping plate 11 is detachably connected to the trough body 10; the first linear telescopic device 12 is arranged on the capping plate 11; the first connecting rod 13 is rotatably connected to the capping plate 11, and the first end of the first connecting rod 13 is connected to the movable end of the first linear telescopic device 12; the adjusting device 14 is rotatably connected to the side wall of the trough body 10, and the adjusting device 14 is movably connected to the second end of the first connecting rod 13, and the adjusting device 14 adjusts the positional relationship between the trough body 10 and the tunnel by contacting the tunnel wall.

[0053] The self-adjusting middle trough provided in the embodiment of the present application includes a trough body 10, a capping plate 11, a first linear telescopic device 12, a first connecting rod 13 and an adjusting device 14; the adjusting device 14 is arranged on the capping plate 11 at the top of the trough body 10, and the adjusting device 14 is connected to the movable end of the first linear telescopic device 12 by a first connection, so that the first connecting rod 13 is driven to move by the telescopic movement of the first linear device, and then the adjusting device 14 is driven to rotate relative to the trough body 10 by the first connecting rod 13. When the adjusting device 14 rotates away from the end of the trough body 10 until it contacts the inner wall surface of the tunnel and an interaction force is generated between the adjusting device 14 and the inner wall surface of the tunnel, the reaction force of the tunnel on the adjusting device 14 acts on the trough body 10 to move the trough body 10, and then the position of the trough body 10 is adjusted, thereby realizing the automatic adjusting function of the middle trough, improving the timeliness and effectiveness of the adjustment of the middle trough, and at the same time reducing the workload of workers and improving the efficiency of the adjustment of the middle trough.

[0054] Furthermore, the first linear telescopic device 12 and the deviation adjustment device 14 are arranged parallel to the long axis of the trough body 10. When the trough screening transfer machine is pushed normally, the first linear telescopic device 12 is in a retracted state, and the deviation adjustment cylinders on both sides of the middle trough are parallel to the long axis of the middle trough. When the scraper transfer machine needs to be adjusted to the left or right, the first linear telescopic device 12 on the side that needs to be adjusted is extended, and the first linear telescopic device 12 pushes the first connecting rod 13 to swing. After the first connecting rod 13 drives the deviation adjustment device 14 to rotate to a position perpendicular to the long axis of the middle trough, the deviation adjustment device 14 is extended and uses the side wall of the lane as a support point. The reaction force of the deviation adjustment device 14 facing the inner wall of the lane acts on the trough body 10, pushing the middle trough, thereby realizing the function of pushing and deflecting the trough screening transfer machine to the left and right. After the deviation adjustment is completed, the deviation adjustment device 14 is retracted, and the first linear telescopic device 12 is retracted to reset the deviation adjustment device 14.

[0055] like Figure 1 and Figure 3 As shown, in a feasible embodiment, there are two first linear telescopic devices 12 , which are arranged along the length direction of the trough body 10 , and the two first linear telescopic devices 12 are symmetrically arranged on the capping plate 11 along the axis of the capping plate 11 .

[0056] In this technical solution, a first linear telescopic device 12 is symmetrically arranged on the trough body 10, and the deviation adjusting device 14 is symmetrically arranged on both sides of the trough body 10, so that the structure of the middle trough itself is symmetrical, which helps to maintain the linearity and accuracy of the advancement of the middle trough; at the same time, the structural symmetry on both sides of the trough body 10 will make the trajectories of the two deviation adjusting devices 14 symmetrical when rotating, which helps to improve the safety of the structure. When the movement trajectory of one side is abnormal, it is easier to be quickly discovered, so that the structure can be inspected and repaired in time.

[0057] Furthermore, the first linear telescopic device 12 is close to the long axis of the middle groove, so that the two first connecting rods 13 are arranged in a "V" shape, so as to increase the movable range of the first connecting rod 13 when the movement space of the first connecting rod 13 is constant, thereby increasing the rotation range of the second linear telescopic device 142, ensuring that the second linear telescopic device 142 can be rotated to a position perpendicular to the long axis of the middle groove, so that the second linear telescopic device 142 is in vertical contact with the inner wall of the tunnel, and the reaction force of the inner wall of the tunnel facing the middle groove is perpendicular to the middle groove, avoiding the generation of component force, thereby improving the adjustment efficiency of the middle groove.

[0058] In some examples, distance sensors are provided at symmetrical positions on both sides of the trough body 10. The distance between the side wall of the trough body 10 and the inner wall of the corresponding side tunnel is detected by two distance sensors, and the two measured values ​​are compared to obtain the offset direction of the middle trough. Then, the action of the first linear telescopic device 12 on the corresponding side is controlled by the actual distance between the side wall of the trough body 10 and the inner wall of the tunnel, thereby driving the deviation adjustment device 14 to rotate and contact with the inner wall of the tunnel to adjust the deviation of the middle trough, which is beneficial to improving the deviation adjustment efficiency and accuracy.

[0059] like Figure 2 As shown, in a feasible embodiment, the adjustment device 14 includes: a second connecting rod 141 and a second linear telescopic device 142; the second connecting rod 141 is vertically arranged, and the first end of the second connecting rod 141 is movably connected to the second end of the first connecting rod 13; the second linear telescopic device 142 is horizontally arranged, and the second linear telescopic device 142 is fixedly connected to the second end of the second connecting rod 141.

[0060] In this technical solution, the second connecting rod 141 is perpendicular to the first connecting rod 13, so that the hinge position between the second linear telescopic device 142 and the trough body 10 is close to the center of the side of the trough body 10, thereby ensuring that the second linear telescopic device 142 can exert a force near the middle of the trough body 10, reducing the resistance of the trough body 10 during the adjustment process, so as to improve the smoothness of the adjustment of the trough body 10 and improve the adjustment efficiency; after the second linear telescopic device 142 rotates outward, the movable end of the second linear telescopic device 142 extends out to resist the inner wall of the tunnel, and the reaction force generated by the inner wall of the tunnel on the second linear telescopic device 142 pushes the trough body 10 to the transport track, adjusts the middle trough, and automatically adjusts the left and right positions of the trough screening transfer machine.

[0061] like Figures 1 to 3 As shown, in a feasible implementation manner, the self-adjusting center-biased slot further includes: a contact portion 15 ; the contact portion 15 is connected to the movable end of the second linear telescopic device 142 .

[0062] In this technical solution, a contact portion 15 is provided on the movable end of the second linear telescopic device 142 to increase the contact area between the movable end of the second linear telescopic device 142 and the inner wall of the tunnel, prevent the movable end of the second linear telescopic device 142 from slipping, enhance the stability of the contact between the movable end of the second linear telescopic device 142 and the inner wall of the tunnel, make the deviation adjustment action of the middle slot more timely and effective, and improve the efficiency of automatic adjustment of the left and right positions of the chute screening transfer machine.

[0063] like Figures 1 to 3 As shown, in a feasible implementation manner, the contact portion 15 is movably connected to the movable end of the second linear telescopic device 142 .

[0064] In this technical solution, the contact portion 15 is movably connected to the movable end of the second linear telescopic device 142, so that when the shape of the inner wall of the tunnel is irregular or the inner tunnel is inclined, resulting in the inner wall of the tunnel and the second linear telescopic device 142 being in a non-completely vertical state, when the contact portion 15 contacts the inner wall of the tunnel, the reaction force of the inner wall of the tunnel will cause the contact portion 15 to rotate relative to the second linear telescopic device 142, and then through the rotation of the contact portion 15, the contact portion 15 and the inner wall of the tunnel are more closely fitted, thereby ensuring the stability of the contact between the second linear telescopic device 142 and the inner wall of the tunnel, reducing the relative sliding between the second linear telescopic device 142 and the inner wall of the tunnel, and converting the reaction force of the inner wall of the tunnel to the second linear telescopic device 142 into more thrust on the slot body 10, thereby ensuring the effectiveness and timeliness of the adjustment of the center slot.

[0065] like Figures 1 to 3 As shown, in a feasible implementation manner, a ball head is provided on the movable end of the second linear telescopic device 142, and the contact portion 15 is sleeved on the ball head, and the contact portion 15 can rotate relative to the ball head.

[0066] In this technical solution, a ball head is provided on the movable end of the second linear telescopic device 142 so that the contact part 15 can rotate 360 ​​degrees relative to the ball head, so that the contact part 15 has a sufficiently large rotation range and rotation flexibility to adapt to lanes of different shapes and improve the practicality of the middle groove.

[0067] like Figure 1 and Figure 3 As shown, in a feasible embodiment, the self-adjusting offset center slot also includes: a movable hole 16; the movable hole 16 is in a long strip shape, the movable hole 16 is arranged at the second end of the first connecting rod 13, and the movable hole 16 extends along the axial direction of the first connecting rod 13; the first end of the second connecting rod 141 is embedded in the movable hole 16, and the first end of the second connecting rod 141 can move in the movable hole 16.

[0068] In this technical solution, the movable hole 16 on the first connecting rod 13 is in the shape of an elongated strip, and the first end of the second connecting rod 141 is embedded in the movable hole 16 so that the first end of the second connecting rod 141 can move in the movable hole 16, thereby expanding the movement range of the second connecting rod 141 and ensuring that when the first connecting rod 13 moves, the second connecting rod 141 does not interfere with the first connecting rod 13, thereby reducing the stress concentration caused by the movement of the first connecting rod 13 and the second connecting rod 141, improving the fatigue life of the structure, and making the second connecting rod 141 move more smoothly, thereby improving the stability of the movement of the second connecting rod 141 relative to the first connecting rod 13.

[0069] like Figure 4As shown, in a feasible embodiment, the trough body 10 includes: a main body 101, a connecting portion 102 and a supporting portion 103; the main body 101 is a hollow cavity with an opening at the top; the connecting portion 102 is arranged on the outer wall of the main body 101, and the deviation adjustment device 14 is hinged to the connecting portion 102; the top surface of the supporting portion 103 is arranged parallel to the capping plate 11, and the supporting portion 103 is arranged on the outer wall of the main body 101, and the supporting portion 103 is used to support the deviation adjustment device 14.

[0070] In this technical solution, a connecting portion 102 is provided on the outer wall of the trough body 10, and the connecting portion 102 is used to be hinged with the deviation adjusting device 14 so that the deviation adjusting device 14 can rotate relative to the trough body 10; a supporting portion 103 is provided on the outer wall of the main body 101, and the supporting portion 103 supports the deviation adjusting device 14 to prevent the gravity of the deviation adjusting device 14 from acting completely on the connecting portion 102, causing the connecting portion 102 to deform, thereby ensuring that the deviation adjusting device 14 rotates smoothly around the connecting portion 102 without jamming, thereby ensuring the timeliness of the deviation adjustment of the middle trough and improving the efficiency of automatic adjustment of the left and right positions of the trough screening transfer machine.

[0071] like Figure 4 As shown, in a feasible embodiment, the trough body 10 includes: a first rib plate 104 and a second rib plate 105; the first rib plate 104 is vertically arranged on the outer wall of the main body 101, and the first rib plate 104 is welded to the connecting part 102; the second rib plate 105 is vertically arranged on the outer wall of the main body 101, and the second rib plate 105 is welded to the supporting part 103.

[0072] In this technical solution, the first rib plate 104 is vertically arranged on the outer wall of the main body 101, and the first rib plate 104 is welded to the connecting part 102 to improve the connection strength between the first rib plate 104 and the main body 101, thereby improving the firmness of the connection between the connecting part 102 and the main body 101; the second rib plate 105 is vertically arranged on the outer wall of the main body 101, and the second rib plate 105 is welded to the supporting part 103 to improve the connection strength between the second rib plate 105 and the main body 101, effectively support the supporting part 103, ensure the horizontal state of the supporting part 103, and bear part of the gravity of the deviation adjustment device 14 through the supporting part 103, thereby reducing the force of the deviation adjustment device 14 on the connecting part 102 in the initial state, making the support and connection structure of the deviation adjustment device 14 more reliable, reducing the tendency of deformation of the connecting part 102, so as to ensure the flexibility of rotation of the deviation adjustment device 14.

[0073] like Figure 5 and Figure 6As shown, in a feasible embodiment, the capping plate 11 includes: a plate body 111, a fixing portion 112 and a fixing pin 113; the plate body 111 is detachably connected to the trough body 10; the fixing portion 112 is arranged on the plate body 111, and the fixing portion 112 is connected to the fixed end of the first linear telescopic device 12; the fixing pin 113 is vertically arranged on the plate body 111, the fixing pin 113 passes through the first connecting rod 13, and the fixing pin 113 is rotatably connected to the first connecting rod 13.

[0074] In this technical solution, the plate body 111 covers the slot body 10, and the fixing part 112 is arranged on the plate body 111 so as to fix the fixed end of the first linear telescopic device 12 through the fixing part 112; the fixing pin 113 is used to limit the first connecting rod 13, so that the first connecting rod 13 rotates along a fixed trajectory around the fixing pin 113 under the drive of the first linear telescopic device 12, so as to ensure the accuracy of the rotation of the deviation adjustment device 14, thereby improving the accuracy of the deviation adjustment of the central slot.

[0075] It is easy for those skilled in the art to understand that, under the premise of no conflict, the above-mentioned advantageous methods can be freely combined and superimposed.

[0076] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present application shall be included in the protection scope of the present application. The above are only preferred implementations of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and variations can be made without departing from the technical principles of the present application, and these improvements and variations should also be regarded as the protection scope of the present application.

Claims

1. A self-adjusting center slot, characterized in that: The self-adjusting middle groove comprises: Tank body; A capping plate, the capping plate is covered on the tank body, and the capping plate is detachably connected to the tank body; a first linear telescopic device, the first linear telescopic device is arranged on the capping plate; A first connecting rod, wherein the first connecting rod is rotatably connected to the capping plate, and a first end of the first connecting rod is connected to a movable end of the first linear telescopic device; The deviation adjusting device is rotatably connected to the side wall of the trough body, and the deviation adjusting device is movably connected to the second end of the first connecting rod. The deviation adjusting device adjusts the positional relationship between the trough body and the lane by contacting the lane wall.

2. The self-adjusting center-offset slot according to claim 1, characterized in that: There are two first linear telescopic devices, which are arranged along the length direction of the trough body, and the two first linear telescopic devices are symmetrically arranged on the capping plate along the axis of the capping plate.

3. A self-adjusting center offset slot according to claim 2, characterized in that: The deviation adjustment device comprises: a second connecting rod, the second connecting rod is vertically arranged, and the first end of the second connecting rod is movably connected to the second end of the first connecting rod; The second linear telescopic device is horizontally arranged and fixedly connected to the second end of the second connecting rod.

4. The self-adjusting center offset slot according to claim 3, characterized in that: The self-adjusting middle groove also includes: A contact portion connected to the movable end of the second linear telescopic device.

5. The self-adjusting center-offset slot according to claim 4, characterized in that: The contact portion is movably connected to the movable end of the second linear telescopic device.

6. The self-adjusting center-offset slot according to claim 5, characterized in that: A ball head is arranged on the movable end of the second linear telescopic device, the contact portion is sleeved on the ball head, and the contact portion can rotate relative to the ball head.

7. The self-adjusting center-offset slot according to claim 3, characterized in that: The self-adjusting middle groove also includes: A movable hole, which is in a long strip shape and is arranged at the second end of the first connecting rod, and extends along the axis direction of the first connecting rod; The first end of the second connecting rod is embedded in the movable hole, and the first end of the second connecting rod can move in the movable hole.

8. The self-adjusting center offset slot according to claim 3, characterized in that: The tank body comprises: A main body, wherein the main body is a hollow cavity with an opening at the top; A connecting part, wherein the connecting part is arranged on the outer wall of the main body, and the deviation adjusting device is hinged to the connecting part; a supporting part, wherein the top surface of the supporting part is arranged parallel to the capping plate, the supporting part is arranged on the outer wall of the main body, and the supporting part is used to support the deviation adjusting device.

9. The self-adjusting center offset slot according to claim 8, characterized in that: The tank body comprises: A first rib plate, wherein the first rib plate is vertically disposed on the outer wall of the main body and is welded to the connecting portion; A second rib plate is vertically arranged on the outer wall of the main body, and the second rib plate is welded to the support portion.

10. A self-adjusting center offset slot according to any one of claims 3 to 9, characterized in that: The capping plate comprises: A plate body, the plate body being detachably connected to the tank body; A fixing part, the fixing part is arranged on the plate body, and the fixing part is connected to a fixing end of the first linear telescopic device; A fixing pin is vertically arranged on the plate body, the fixing pin passes through the first connecting rod, and the fixing pin is rotatably connected to the first connecting rod.

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