A mine-used fitted anchor rod tray

Abstract

The present application relates to a kind of mining fitting anchor rod tray, relate to coal mine supporting technical field, including the tray body fixedly on coal wall, first joint frame being detachably connected to one side end of tray body and second joint frame being detachably connected to the other side end of tray body and being fixedly connected with the first joint frame on adjacent tray body;The end face of tray body away from coal wall is raised to form two support grooves for supporting steel bar embedding and spaced arrangement in the end face close to coal wall, and anchor rod is vertically arranged between the two support grooves and fixed to coal wall;The end face of tray body away from coal wall is provided with multiple joint blocks, joint block side end is provided with joint socket, and first joint frame and second joint frame all include joint plug rod inserted and fixed in joint socket.The beneficial effect is that the anchor rod tray in the whole coal mine roadway can be connected with each other to form a whole, improve structural strength and supporting effect.

Description

Technical Field

[0001] This invention relates to the field of coal mine support technology, and in particular to a mine-use conformal anchor bolt tray. Background Technology

[0002] Anchor plates, also known as anchor trays, are a type of high-strength mine support material. They are components of slotted bolts and are mainly used in coal mines, tunnels, and railway support applications.

[0003] Anchor plates are primarily made of materials such as steel, aluminum alloy, and stainless steel, and are characterized by their sturdiness and durability, but they are also susceptible to corrosion and relatively expensive. Anchor plates come in round, square, and diamond shapes, with common specifications including 300 cubic meter plates and sizes such as 120×120×8mm and 150×150×10mm. Manufacturing processes include shearing, punching, and perforation. Anchor plates can also be made from materials such as alloy sheets, and various shapes and designs are available to suit different engineering needs.

[0004] When tunneling teams are constructing tunnels, the anchor plate is an important part of tunnel support, and its performance directly affects the support effect of the tunnel.

[0005] When anchor bolt trays are used to fix the support steel bars, a single anchor bolt tray can only fix one or a planned number of support steel bars. However, the support of the entire coal mine roadway needs to be integrated to improve the overall strength. In actual application, the installation of support steel bars is changed according to the roadway direction and overall shape, so it is difficult to manufacture suitable anchor bolt trays. Summary of the Invention

[0006] (a) Technical problems to be solved

[0007] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a mining-use integrated anchor bolt tray, which solves the technical problem that the anchor bolt trays are isolated from each other and cannot form a whole to improve the roadway support strength.

[0008] (II) Technical Solution

[0009] To achieve the above objectives, the main technical solutions adopted by the present invention include:

[0010] This invention provides a mining-grade, fitted anchor bolt tray, comprising a tray body that is fitted and fixed to a coal face, a first connecting frame that is detachably connected to one side of the tray body, and a second connecting frame that is detachably connected to the other side of the tray body and fixedly connected to the first connecting frame on an adjacent tray body;

[0011] The pallet body protrudes towards one end away from the coal wall to form two spaced grooves on the end close to the coal wall for embedding support steel bars. An anchor rods fixed to the coal wall are vertically inserted between the two grooves on the pallet body.

[0012] The pallet body is provided with multiple joint blocks on one end face away from the coal wall. The side end of each joint block is provided with a joint insertion hole. Both the first joint frame and the second joint frame include a joint insertion rod that is inserted and fixed in the joint insertion hole.

[0013] This invention provides a mine-use, fitted anchor bolt tray. When using this tray, the tray body is directly placed over adjacent support steel bars, embedding the adjacent support steel bars into the tray groove. The tray body is then directly fixed to the coal face using anchor bolts. After fixing adjacent tray bodies in the same way, a first and second joint frame are installed on the adjacent tray bodies at their close sides. The joint rods on the first and second joint frames are inserted into the joint holes of the joint blocks on the two tray bodies and fixed. Finally, the first and second joint frames are fixed, thus connecting two adjacent anchor bolt trays into one unit. Repeating this process allows all anchor bolt trays in the entire coal mine roadway to be interconnected, forming a unified whole, improving structural strength and support effect.

[0014] Optionally, the side end of the combined block is provided with a positioning hole that is vertically connected to the combined insertion hole. A positioning rod is inserted into the positioning hole of the combined block by means of a tension spring. A positioning slot for the positioning rod to be inserted is vertically provided on the combined rod. A limiting cap that abuts against the side end of the combined block is provided on one end face of the positioning rod.

[0015] When it is necessary to fix the joint plug rod, first pull one end of the positioning plug rod out of the joint plug hole through the limit cap, then insert the joint plug rod into the joint plug hole, and then let the positioning plug rod return to its original position under the action of the tension spring and insert it into the positioning slot of the joint plug rod. This solution makes it easier to fix the joint plug rod and the joint block.

[0016] Optionally, a connecting ball head is provided on one end face of the pallet body away from the coal wall, and the joint block ball is connected to the connecting ball head.

[0017] Coal mine roadways are winding and tortuous, and the support steel bars are not completely parallel or in the same plane. By setting connecting ball heads on the tray body, the connecting ball heads can be connected to the joint block, allowing the joint block to rotate within a certain range in space. This makes it more convenient to connect support steel bars with different extension directions and different heights through the anchor tray.

[0018] Optionally, the first joint frame further includes a first joint seat disposed at the end of the joint insert rod away from the pallet body, and the second joint frame further includes a second joint seat disposed at the end of the joint insert rod away from the pallet body. The end of the joint insert rod away from the joint block is provided with a mounting ball head. Both the first joint seat and the second joint seat are provided with mounting ball seats for the mounting ball head to be ball-jointed into. The side end of the first joint seat is provided with a T-shaped slide bar, and the side end of the second joint seat is provided with a T-shaped slide groove for the T-shaped slide bar to slide into. A connecting plate is rotatably disposed on the end face of the first joint seat away from the coal wall. The connecting plate is rotated to abut against the end face of the second joint seat and fixed to the second joint seat with bolts. The first joint seat and the second joint seat are respectively fixed to the coal wall by the anchor rod.

[0019] By setting an installation ball head at the other end of the joint rod, the installation ball head is ball-connected to the installation ball seat of the first joint seat and the second joint seat. When connecting the first joint seat and the second joint seat, the angle can be adjusted as needed. Then, the T-shaped slide bar on the side of the first joint seat is aligned with the T-shaped slide groove on the side of the second joint seat and slid in until the first joint seat and the second joint seat are completely assembled together. At this time, the connecting plate is rotated to the upper surface of the second joint seat and fixed with bolts. Finally, when the distance between adjacent anchor bolt trays is too large, the first joint seat and the second joint seat can be fixed to the coal wall with anchor bolts respectively. When the distance between adjacent anchor bolts is small, this is not necessary.

[0020] Optionally, it further includes an extension frame disposed between the first joint frame and the second joint frame. The extension frame includes an extension seat disposed at both ends and connected to the first joint seat and the second joint seat respectively, a reinforcing seat disposed between the two extension seats, and an extension rod connected between the extension seat and the reinforcing seat. The reinforcing seat is fixed to the coal wall by the anchor rod.

[0021] By setting an extension frame between the first and second joint frames, when the distance between adjacent anchor trays is too far, the extension frame can be used to extend and connect them. The first and second joint seats are then connected to the extension seats respectively, and the reinforcing seat located in the middle is fixed to the coal wall by anchor bolts.

[0022] Optionally, the two ends of the extension rod are detachably connected to the extension seat and the reinforcing seat, respectively. The extension rod is bent and fits against the coal wall. The reinforcing seat is connected to two adjacent first joint seats and two second joint seats through the extension rod and the extension seat to connect four adjacent sets of the tray bodies in series.

[0023] By detachably connecting the extension rod to the extension seat and reinforcing seat at both ends, the extension rod can be replaced according to the actual connection stroke. At the same time, the extension rod is set to bend and fit against the coal wall to reduce the space occupied by the coal mine roadway support and make it more convenient. On the other hand, the reinforcing seat can be connected in series with four adjacent tray bodies through the extension rod, so that after the roadway support is installed, multiple anchor trays can be connected in series to form a whole network to improve the structural strength and safety of the support.

[0024] Optionally, the pallet body includes two equal-sized half-pallets formed by dividing along the length direction perpendicular to the tray length, and two pallet telescopic rods connected between the two half-pallets and arranged at intervals along the length direction of the tray. The pallet telescopic rods include two main rods that are slidably inserted into the two half-pallets respectively, and auxiliary rods whose two ends are slidably inserted into the two main rods at one end close to each other.

[0025] By setting the pallet body as two half-pallets and a pallet telescopic rod connecting the two half-pallets, the pallet body can be changed from being fixed at a point to being fixed along a line, thereby reducing the number of anchor bolt pallets to be installed in a roadway and lowering costs.

[0026] Optionally, connecting bars are provided between adjacent pallet bodies distributed along the length of the support reinforcement bars, and the two ends of the connecting bars are respectively inserted into the joint insertion holes of the joint blocks on the two pallet bodies.

[0027] By connecting the two adjacent tray bodies along the length of the support steel bars, the strength of the entire roadway support is further enhanced.

[0028] Optionally, the pallet body has a uniform array of pins embedded in the coal wall on one end face that abuts against the coal wall.

[0029] By using arrays of rivets on the pallet body and driving them into the coal wall, the connection between the pallet body and the coal wall becomes tighter.

[0030] Optionally, two anchor rods are provided and are spaced apart through the pallet body, both located between the two brackets.

[0031] The pallet body is fixed by two anchor bolts, which not only limit the position of the two fixed support steel bars, but also limit the position of the two anchor bolts. Even if the pallet body loosens due to cracks in the coal wall, it will not shift or rotate. It can continue to provide a certain degree of fixation to the support steel bars, making it safer.

[0032] (III) Beneficial Effects

[0033] The beneficial effects of this invention are as follows: When using the mining-grade fitting anchor bolt tray of this invention, the tray body is directly placed on the adjacent support steel bars, so that the adjacent support steel bars are embedded in the tray groove. Then, the tray body is directly fixed to the coal wall by anchor bolts. After fixing the adjacent tray bodies in the same way, a first joint frame and a second joint frame are respectively installed on the sides of the adjacent tray bodies that are close to each other. The joint insertion rods on the first joint frame and the second joint frame are respectively inserted into the joint insertion holes of the joint blocks on the two tray bodies and fixed. Finally, the first joint frame and the second joint frame are fixed, so that the two adjacent anchor bolt trays are connected as one. By repeating the operation, the anchor bolt trays in the entire coal mine roadway can be connected to each other to form a whole, thereby improving the structural strength and support effect. Attached Figure Description

[0034] Figure 1 This is a three-dimensional schematic diagram of an embodiment of the present invention;

[0035] Figure 2 This is a partial explosion diagram of an embodiment of the present invention;

[0036] Figure 3 for Figure 2 Enlarged view of point A;

[0037] Figure 4 for Figure 2 Enlarged view of point B;

[0038] Figure 5 This is a schematic diagram of the structure of the tray body in an embodiment of the present invention.

[0039] [Explanation of Labels in the Attached Image]

[0040] 1. Pallet body; 11. Tray slot; 12. Connecting block; 121. Connecting insertion hole; 122. Positioning insertion hole; 123. Positioning rod; 124. Limit cap; 13. Connecting ball head; 14. Half pallet; 15. Pallet telescopic rod; 151. Main rod; 152. Secondary rod; 16. Connecting rib; 17. Tie nail; 2. First connecting frame; 21. Connecting rod; 211. Positioning slot; 212. Mounting ball head; 22. First connecting seat; 221. Mounting ball seat; 222. T-shaped slide bar; 223. Connecting plate; 3. Second connecting frame; 31. Second connecting seat; 32. T-shaped slide bar; 4. Extension frame; 41. Extension seat; 42. Reinforcing seat; 43. Extension rod; 5. Anchor rod. Detailed Implementation

[0041] To better explain and facilitate understanding of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0042] The mining-grade conformal anchor bolt tray proposed in this invention involves directly attaching the tray body to adjacent support steel bars, embedding the steel bars into the tray groove, and then fixing the tray body directly to the coal face using anchor bolts. After fixing adjacent tray bodies in the same way, a first and a second joint frame are installed on the adjacent sides of the tray bodies. The joint rods on the first and second joint frames are inserted into the joint holes of the joint blocks on the two tray bodies and fixed. Finally, the first and second joint frames are fixed, thus connecting two adjacent anchor bolt trays into one unit. By repeating this process, all anchor bolt trays in the entire coal mine roadway can be connected to form a whole, improving structural strength and support effect.

[0043] To better understand the above technical solutions, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the present invention can be understood more clearly and thoroughly, and that the scope of the present invention can be fully conveyed to those skilled in the art.

[0044] Reference Figures 1-5 A mining-grade adhesive anchor bolt tray includes a tray body 1 that is attached to and fixed to the coal face, a first connecting frame 2 that is detachably connected to one side of the tray body 1, a second connecting frame 3 that is detachably connected to the other side of the tray body 1 and connected and fixed to the first connecting frame 2 on the adjacent tray body 1, and an extension frame 4.

[0045] The pallet body 1 protrudes towards the end face away from the coal wall to form two slots 11 arranged at intervals on the end face close to the coal wall for embedding support steel bars. An anchor 5 fixed to the coal wall is vertically inserted between the two slots 11 on the pallet body 1.

[0046] The pallet body 1 has multiple connecting blocks 12 on one end face away from the coal wall. The connecting blocks 12 have connecting holes 121 on their side ends. The first connecting frame 2 and the second connecting frame 3 both include connecting rods 21 that are inserted and fixed in the connecting holes 121.

[0047] When using the anchor bolt 5 tray, the tray body 1 is directly placed on the adjacent support steel bars, so that the adjacent support steel bars are embedded in the slot 11. Then, the tray body 1 is directly fixed to the coal wall by the anchor bolt 5. After fixing the adjacent tray bodies 1 in the same way, the first joint frame 2 and the second joint frame 3 are installed on the side ends of the adjacent tray bodies 1 that are close to each other. The joint insertion rods 21 on the first joint frame 2 and the second joint frame 3 are inserted into the joint insertion holes 121 of the joint blocks 12 on the two tray bodies 1 and fixed. Finally, the first joint frame 2 and the second joint frame 3 are fixed, so that the two adjacent anchor bolt 5 trays are connected as one. Repeat the operation so that the anchor bolt 5 trays in the entire coal mine roadway can be connected to each other to form a whole.

[0048] The side end of the connecting block 12 has a positioning hole 122 that is vertically connected to the connecting hole 121. A positioning rod 123 is inserted into the positioning hole 122 by a tension spring. A positioning slot 211 for the positioning rod 123 is vertically formed on the connecting rod 21. A limiting cap 124 is integrally formed on one end face of the positioning rod 123, which abuts against the side end of the connecting block 12. One end of the positioning rod 123 is pulled out of the connecting hole 121 by the limiting cap 124, and then the connecting rod 21 is inserted into the connecting hole 121. Then, the positioning rod 123 is reset under the action of the tension spring and inserted into the positioning slot 211 of the connecting rod 21, thus completing the connection between the connecting rod 21 and the connecting block 12.

[0049] A connecting ball head 13 is welded to the end face of the tray body 1 facing away from the coal wall, and the connecting block 12 is ball-jointed to the connecting ball head 13. This allows the connecting block 12 to rotate within a certain range in space, thereby making it more convenient to connect support steel bars with different extension directions and different heights through the anchor bolt 5 tray.

[0050] The first joint frame 2 also includes a first joint seat 22 disposed at the end of the joint insertion rod 21 away from the pallet body 1, and the second joint frame 3 also includes a second joint seat 31 disposed at the end of the joint insertion rod 21 away from the pallet body 1. The end of the joint insertion rod 21 away from the joint block 12 is integrally provided with a mounting ball head 212. The first joint seat 22 and the second joint seat 31 are both fixed with mounting ball seats 221 for ball joint insertion of the mounting ball head 212 by bolts. The first joint seat 22 is integrally provided with a T-shaped slide bar 222. The side end of the second joint seat 31 is provided with a T-shaped slide groove 32 for sliding insertion of the T-shaped slide bar 222. The end face of the first joint seat 22 away from the coal wall is rotatably connected to a connecting plate 223 by bolts. The connecting plate 223 is rotated to abut against the end face of the second joint seat 31 and fixed to the second joint seat 31 by bolts. The first joint seat 22 and the second joint seat 31 are respectively fixed to the coal wall by anchor bolts 5.

[0051] When connecting the first joint seat 22 and the second joint seat 31, the angle can be adjusted as needed. Then, the T-shaped slide bar 222 on the side of the first joint seat 22 is aligned with the T-shaped slide groove 32 on the side of the second joint seat 31 and slid in until the first joint seat 22 and the second joint seat 31 are completely assembled together. At this time, the connecting plate 223 is rotated to the upper surface of the second joint seat 31 and fixed with bolts. Finally, when the distance between adjacent anchor bolt 5 trays is too large, the first joint seat 22 and the second joint seat 31 can be fixed to the coal wall by anchor bolts 5 respectively. When the distance between adjacent anchor bolts 5 is small, it is not necessary.

[0052] The extension frame 4 includes an extension seat 41 located at both ends and connected to the first joint seat 22 and the second joint seat 31 respectively, a reinforcing seat 42 located between the two extension seats 41, and an extension rod 43 connecting the extension seats 41 and the reinforcing seat 42. The reinforcing seat 42 is fixed to the coal wall by anchor bolts 5. The two ends of the extension rod 43 are detachably connected to the extension seats 41 and the reinforcing seat 42 respectively. The extension rod 43 is curved and fits against the coal wall. The side of the extension seat 41 away from the extension rod 43 is provided with a T-shaped slide bar 222 or has a T-shaped slide groove 32. The reinforcing seat 42 is connected to two adjacent first joint seats 22 and two adjacent second joint seats 31 through the extension rod 43 and the extension seat 41 to connect four adjacent sets of pallet bodies 1 in series. When the distance between adjacent anchor bolt 5 pallets is too far, the extension frame 4 can be used to extend and connect the first joint seat 22 and the second joint seat 31 to the extension seat 41 respectively, and then the reinforcing seat 42 located in the middle is fixed to the coal wall by anchor bolts 5. The extension rod 43 can be replaced according to the actual connection stroke. At the same time, the extension rod 43 can be set to be bent and fit the coal wall to reduce the space occupied by the coal mine roadway support and make it more convenient. On the other hand, the reinforcing seat 42 can be connected in series with four adjacent tray bodies 1 through the extension rod 43, so that after the roadway support is installed, multiple anchor bolt 5 trays can be connected in series to form a whole network.

[0053] The pallet body 1 includes two identical half-pallets 14 formed by dividing along the length of the vertical support groove 11, and two pallet telescopic rods 15 connected between the two half-pallets 14 and arranged at intervals along the length of the support groove 11. Each pallet telescopic rod 15 includes two main rods 151 that are slidably inserted into the two half-pallets 14, and auxiliary rods 152 whose ends are slidably inserted into the two main rods 151 at approximately opposite ends. This design changes the pallet body 1 from a point-fixed structure to a linear fixed structure, thereby reducing the number of anchor bolt 5 pallets required in a single roadway, thus reducing costs while maintaining support strength.

[0054] Both half-panels 14 are equipped with anchor bolts 5 that connect to the coal face.

[0055] Connecting ribs 16 are provided between adjacent pallet bodies 1 distributed along the length of the support reinforcement. The two ends of the connecting ribs 16 are respectively provided with positioning slots 211 to be inserted into the joint insertion holes 121 of the joint blocks 12 on the two pallet bodies 1 and fixed. This connects the two adjacent pallet bodies 1 along the length of the support reinforcement to further strengthen the support of the entire roadway.

[0056] The pallet body 1 has a uniform array of studs 17 welded to one end face of the coal wall that abut against it. This makes the connection between the pallet body 1 and the coal wall tighter, thereby improving the stress state of the surrounding rock and inhibiting the delamination, sliding of structural surfaces and opening of joints and fissures in the surrounding rock.

[0057] In the description of this invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0058] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0059] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first and second features are in direct contact, or that they are in indirect contact through an intermediate medium. Furthermore, "above," "over," or "on top" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," or "beneath" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0060] In the description of this specification, the terms "one embodiment," "some embodiments," "embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0061] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make modifications, alterations, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A mining-grade, fitted anchor bolt tray, characterized in that: It includes a pallet body (1) that is fixed to the coal wall, a first joint frame (2) that is detachably connected to one side of the pallet body (1), and a second joint frame (3) that is detachably connected to the other side of the pallet body (1) and fixed to the first joint frame (2) on the adjacent pallet body (1). The pallet body (1) protrudes towards one end away from the coal wall to form two slots (11) arranged at intervals for embedding support steel bars on one end close to the coal wall. An anchor rod (5) fixed to the coal wall is vertically inserted between the two slots (11) of the pallet body (1). The pallet body (1) has multiple joint blocks (12) on one end face away from the coal wall. The joint block (12) has a joint insertion hole (121) on its side. The first joint frame (2) and the second joint frame (3) both include a joint insertion rod (21) inserted and fixed in the joint insertion hole (121).

2. The mining-grade fitting anchor bolt tray as described in claim 1, characterized in that: The side end of the joint block (12) is provided with a positioning hole (122) that is vertically connected to the joint insertion hole (121). The joint block (12) is fitted with a positioning rod (123) through a tension spring in the positioning hole (122). The joint rod (21) is provided with a positioning slot (211) for the positioning rod (123) to be inserted vertically. One end face of the positioning rod (123) is provided with a limiting cap (124) that abuts against the side end of the joint block (12).

3. The mining-grade fitting anchor bolt tray as described in claim 1, characterized in that: The pallet body (1) is provided with a connecting ball head (13) on one end face away from the coal wall, and the joint block (12) is ball-connected to the connecting ball head (13).

4. The mining-grade fitting anchor bolt tray as described in claim 1, characterized in that: The first joint frame (2) further includes a first joint seat (22) disposed at the end of the joint plug (21) away from the tray body (1), and the second joint frame (3) further includes a second joint seat (31) disposed at the end of the joint plug (21) away from the tray body (1). The end of the joint plug (21) away from the joint block (12) is provided with a mounting ball head (212), and both the first joint seat (22) and the second joint seat (31) are provided with mounting ball seats (221) for ball-jointing insertion of the mounting ball head (212). The first joint seat (22) is provided with a T-shaped slide bar (222) on its side end, and the second joint seat (31) is provided with a T-shaped slide groove (32) for the T-shaped slide bar (222) to slide into. A connecting plate (223) is rotatably provided on the end face of the first joint seat (22) away from the coal wall. The connecting plate (223) is rotated to abut against the end face of the second joint seat (31) and fixed to the second joint seat (31) by bolts. The first joint seat (22) and the second joint seat (31) are respectively fixed to the coal wall by the anchor rod (5).

5. The mining-grade fitting anchor bolt tray as described in claim 4, characterized in that: It also includes an extension frame (4) disposed between the first joint frame (2) and the second joint frame (3). The extension frame (4) includes an extension seat (41) disposed at both ends and connected to the first joint seat (22) and the second joint seat (31) respectively, a reinforcing seat (42) disposed between the two extension seats (41), and an extension rod (43) connected between the extension seat (41) and the reinforcing seat (42). The reinforcing seat (42) is fixed to the coal wall by the anchor (5).

6. The mining-grade conformal anchor bolt tray as described in claim 5, characterized in that: The two ends of the extension rod (43) are detachably connected to the extension seat (41) and the reinforcing seat (42), respectively. The extension rod (43) is bent and fits against the coal wall. The reinforcing seat (42) is connected to two adjacent first joint seats (22) and two second joint seats (31) through the extension rod (43) and the extension seat (41) to connect four adjacent sets of the tray bodies (1) in series.

7. The mining-grade fitting anchor bolt tray as described in any one of claims 1-6, characterized in that: The pallet body (1) includes two half-pallets (14) of the same size formed by dividing along the length direction perpendicular to the length of the tray (11) and two pallet telescopic rods (15) connected between the two half-pallets (14) and arranged at intervals along the length direction of the tray (11). The pallet telescopic rods (15) include two main rods (151) that are respectively slidably inserted into the two half-pallets (14) and two auxiliary rods (152) that are respectively slidably inserted into the two main rods (151) at one end close to each other.

8. The mining-grade fitting anchor bolt tray as described in claim 1, characterized in that: A connecting bar (16) is provided between adjacent pallet bodies (1) distributed along the length direction of the support reinforcement. The two ends of the connecting bar (16) are respectively inserted into the joint insertion hole (121) of the joint block (12) on the two pallet bodies (1).

9. The mining-grade fitting anchor bolt tray as described in claim 1, characterized in that: The pallet body (1) has a uniform array of nails (17) that are driven into the coal wall on one end face of the pallet body (1).

10. The mining-grade fitting anchor bolt tray as described in claim 1, characterized in that: The anchor rod (5) is provided in two pieces and is inserted at intervals through the pallet body (1) and is located between the two trays (11).

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