Tunneling equipment and anti-receding machine supporting device thereof

Abstract

The utility model discloses tunneling equipment and an anti-receding machine supporting device thereof, the anti-receding machine supporting device comprises a connecting seat, a top supporting assembly, a bottom supporting assembly, a supporting limiting assembly and an adjusting oil cylinder, the connecting seat is used for being connected with a chassis of the tunneling equipment, the top supporting assembly is used for abutting against a roadway top of a roadway, and the bottom supporting assembly is used for abutting against the ground of the roadway; the first end of the supporting and limiting assembly is hinged to the connecting base, the second end of the supporting and limiting assembly is hinged to the top supporting assembly, the supporting and limiting assembly is of a telescopic structure, and a limiting structure is arranged on the supporting and limiting assembly; the first end of the adjusting oil cylinder is hinged to the bottom supporting assembly, the second end of the adjusting oil cylinder is hinged to the top supporting assembly, the position, deviating relative to the adjusting oil cylinder, of the bottom supporting assembly is hinged to the connecting base, and the adjusting oil cylinder is used for adjusting the distance between the bottom supporting assembly and the top supporting assembly. According to the anti-withdrawal supporting device, the stability of the tunneling equipment can be effectively improved, and lateral movement or withdrawal of the whole tunneling equipment is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of roadway tunneling, and particularly to an anti-retreat machine support device and a tunneling device adopting the anti-retreat machine support device. Background Art

[0002] At present, due to the advantages of safety, high efficiency, good roadway forming quality, etc., tunneling equipment has been widely used in domestic roadway tunneling operations. However, during tunneling construction operations, the rotation and cutting of the cutting head of the tunneling equipment on the rock will generate a strong impact, resulting in severe vibrations of the whole machine and the roadway roof, increasing the risk of roof fall, and easily causing wear of oil pipes, detachment of electrical components, side shift or retreat of the whole machine. This phenomenon is more obvious for tunneling construction with a large cutting power, which will not only shorten the machine life, easily cause failures, but also change the relative position of the cutting head, thus making it impossible to accurately control the feed amount of the cutting head.

[0003] In response to this, the Chinese utility model patent CN218844342U provides a timely support and stability device for a roadheader-anchor rig. It drives the top beam body to lift and move to a state of supporting the roadway roof through a lifting mechanism, and a telescopic beam assembly and a buffer mechanism are arranged on the top beam body, which can increase the support area, reduce the specific pressure of the roof, and prevent large vibrations from damaging the roof, achieving a better support effect. However, due to the large number of components on the top beam body of this device, it will not only increase the weight of the whole tunneling equipment, but also further transfer the top pressure to the traveling mechanism of the tunneling equipment during the top support process, resulting in a multiple increase in the pressure borne by the traveling mechanism, extremely easy to cause damage to the crawler and chassis of the tunneling equipment, and at the same time increasing the risk of getting stuck in the bottom. Summary of the Utility Model

[0004] The utility model primarily provides an anti-retreat machine support device to solve the technical problem that the top support device of the existing tunneling equipment is prone to cause excessive pressure on the traveling mechanism, resulting in damage or getting stuck in the bottom.

[0005] The utility model also provides a tunneling device adopting the above anti-retreat machine support device.

[0006] According to the first aspect of the utility model, an anti-retreat machine support device is provided for supporting and fixing a tunneling equipment in a roadway. The anti-retreat machine support device includes a connecting seat, a top support assembly, a bottom support assembly, a support limiting assembly, and an adjusting oil cylinder. The connecting seat is used for connecting with the chassis of the tunneling equipment, the top support assembly is used for abutting against the roof of the roadway, and the bottom support assembly is used for abutting against the ground of the roadway.

[0007] The first end of the support and limit assembly is hinged to the connecting seat, the second end of the support and limit assembly is hinged to the top support assembly, the support and limit assembly adopts a telescopic structure, and a limit structure for locking its telescopic length is provided on the support and limit assembly;

[0008] The first end of the adjusting oil cylinder is hinged to the bottom support assembly, the second end of the adjusting oil cylinder is hinged to the top support assembly, and a position on the bottom support assembly offset relative to the adjusting oil cylinder is hinged to the connecting seat. The adjusting oil cylinder is used to adjust the distance between the bottom support assembly and the top support assembly.

[0009] Preferably, the first end of the connecting seat is used to connect to the chassis of the tunneling equipment, the second end of the connecting seat is hinged to the support and limit assembly, and a position between the first end and the second end of the connecting seat is hinged to the bottom support assembly.

[0010] Preferably, the top support assembly includes a fixed plate and a movable plate that are stacked and spaced apart. One of the fixed plate and the movable plate has a ball socket structure, and the other is provided with a ball head embedded in the ball socket structure and used for rotating relative to the ball socket structure. The support and limit assembly and the adjusting oil cylinder are both connected to the fixed plate. The movable plate is used to abut against the roof of the roadway and adaptively adjust the support angle through the cooperation of the ball head and the ball socket structure.

[0011] Preferably, two sets of elastic reset components are further provided on the fixed plate. The two sets of elastic reset components are symmetrically arranged on opposite sides of the ball head and are respectively connected to the movable plate. The two sets of elastic reset components are both used to apply an elastic force to the movable plate in the direction close to the fixed plate, or the two sets of elastic reset components are both used to apply an elastic force to the movable plate in the direction away from the fixed plate.

[0012] Preferably, the support and limit assembly includes a first support cylinder and a second support cylinder that are nested with each other. A first limit hole is provided on the first support cylinder, and a plurality of second limit holes are spaced along the length direction of the second support cylinder. The first support cylinder is used to telescopically move relative to the second support cylinder to a state where the first limit hole is aligned with any one of the second limit holes;

[0013] The limit structure includes a limit pin, and the limit pin is used to pass through the first limit hole and the corresponding second limit hole to lock and limit the first support cylinder relative to the second support cylinder.

[0014] Preferably, the anti-retreat machine support device further includes a support frame, and a pair of the connecting seat, the bottom support assembly, the top support assembly, the support and limit assembly, and the adjusting oil cylinder are symmetrically arranged on opposite sides of the support frame.

[0015] Preferably, the first end of the support frame is used to extend to the front end of the tunneling equipment and connect with the roof support assembly, and the second end of the support frame is used to extend to the rear end of the tunneling equipment and is provided with a support seat for connecting with the chassis.

[0016] Preferably, a protective rolling curtain is provided on the roof support assembly, and the protective rolling curtain is used to be pulled down to form a protective screen on one side of the tunneling equipment.

[0017] Preferably, the bottom support assembly includes a bottom support plate and a plurality of anti-slip protrusions arranged on the bottom support plate and used to abut against the roadway.

[0018] According to the second aspect of the present invention, there is also provided a tunneling equipment, including a cutting device connected to the chassis and the above-mentioned anti-retreat machine support device, and a connecting seat of the anti-retreat machine support device is connected to the chassis.

[0019] The present invention has the following beneficial effects:

[0020] The anti-retreat machine support device provided by the present invention is respectively provided with a roof support assembly and a bottom support assembly at the upper and lower ends. The distance between the bottom support assembly and the roof support assembly is adjusted by the adjusting oil cylinder, and the roof support assembly is stably supported on the connecting seat through the support limiting assembly. It can not only stably support the roof of the roadway by using the roof support assembly to avoid the risk of roof fall, but also abut against the ground of the roadway by using the bottom support assembly. Thus, the chassis pressure of the tunneling equipment can be effectively relieved by the double support method of up and down, preventing the chassis from being damaged or sinking to the bottom, and effectively improving the support stability, avoiding the whole tunneling equipment from shifting sideways or retreating, thereby improving the position accuracy of the cutting head, being beneficial to accurately controlling the feed amount, and improving the construction effect. Secondly, a four-bar linkage structure is formed by the connecting seat, the bottom support assembly, the support limiting assembly and the adjusting oil cylinder, which can quickly and stably adjust the support height of the roof support assembly, and at the same time keep the bottom support assembly in a state of tightly abutting against the ground. The support adjustment structure is simple and efficient, the support effect is better, and the stability is stronger.

[0021] In addition to the purposes, features and advantages described above, the present invention has other purposes, features and advantages. The present invention will be further described in detail below with reference to the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings forming a part of this application are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0023] Figure 1 is a three-dimensional view of the tunneling equipment provided by the embodiment of the present invention;

[0024] Figure 2 The Figure 1 three-dimensional view of the anti-retreat machine support device in the tunneling equipment shown;

[0025] Figure 3 The Figure 2 sectional structure diagram of the top support assembly in the anti-retreat machine support device shown, showing the ball head and ball socket structure;

[0026] Figure 4 The Figure 3 sectional structure diagram of the top support assembly along another plane shown, showing the elastic reset assembly;

[0027] Figure 5 The Figure 2 three-dimensional view of the support limit assembly in the anti-retreat machine support device shown;

[0028] Figure 6 The Figure 2 three-dimensional view of the bottom support assembly in the anti-retreat machine support device shown;

[0029] Figure 7 The Figure 1 structural schematic diagram of the crawler in the tunneling equipment shown;

[0030] Figure 8 The Figure 1 three-dimensional view of the cutting device in the tunneling equipment shown.

[0031] Legend:

[0032] 1000, tunneling equipment; 1, anti-retreat machine support device; 11, connecting seat; 12, top support assembly; 121, fixing plate; 122, movable plate; 123, ball socket structure; 124, ball head; 125, elastic reset assembly; 1251, guide cylinder; 1252, bolt; 1253, nut; 1254, spring; 13, bottom support assembly; 131, bottom support plate; 132, anti-slip protrusion; 14, support limit assembly; 141, first support cylinder; 142, second support cylinder; 1421, second limit hole; 143, limit pin; 15, adjusting oil cylinder; 16, support frame; 161, support seat; 17, protective curtain; 2, chassis; 21, crawler plate; 211, anti-slip flange; 3, cutting device; 31, drum; 32, cutting teeth. Detailed implementation manners

[0033] The following will describe in detail the embodiments of the present invention with reference to the accompanying drawings. However, the present invention can be implemented in many different ways defined and covered by the following.

[0034] Figures 1 to 8Collectively illustrate the tunneling equipment and its anti-retreat machine support device provided by the embodiments of the present utility model. Among them, the anti-retreat machine support device is used to support and fix the tunneling equipment in the roadway, improve the stability of the tunneling equipment, prevent the whole tunneling equipment from shifting laterally or retreating, thereby improving the position accuracy of the cutting head, facilitating the accurate control of the feed rate, and enhancing the construction effect.

[0035] Please refer to Figure 1 and Figure 2 , the anti-retreat machine support device 1 includes a connecting seat 11, a top support assembly 12, a bottom support assembly 13, a support limiting assembly 14 and an adjusting oil cylinder 15. The connecting seat 11 is used to connect with the chassis 2 of the tunneling equipment 1000. The top support assembly 12 is used to abut against the roof of the roadway. The bottom support assembly 13 is used to abut against the ground of the roadway.

[0036] Furthermore, the first end of the support limiting assembly 14 is hinged to the connecting seat 11, the second end of the support limiting assembly 14 is hinged to the top support assembly 12. The support limiting assembly 14 adopts a telescopic structure, and a limiting structure for locking its telescopic length is provided on the support limiting assembly 14. Thus, after the limiting structure locks the telescopic length of the support limiting assembly 14, the top support assembly 12 is limited and fixed relative to the connecting seat 11.

[0037] Furthermore, the first end of the adjusting oil cylinder 15 is hinged to the bottom support assembly 13, the second end of the adjusting oil cylinder 15 is hinged to the top support assembly 12. The position of the bottom support assembly 13 offset relative to the adjusting oil cylinder 15 is hinged to the connecting seat 11. The adjusting oil cylinder 15 is used to adjust the distance between the bottom support assembly 13 and the top support assembly 12.

[0038] Specifically, the anti-retreat machine support device 1 is respectively provided with a top support assembly 12 and a bottom support assembly 13 at its upper and lower ends. The distance between the bottom support assembly 13 and the top support assembly 12 is adjusted by the adjusting oil cylinder 15, and the top support assembly 12 is stably supported on the connecting seat 11 through the support limiting assembly 14. It can not only stably support the roof of the roadway by using the top support assembly 12 to avoid the risk of roof fall, but also use the bottom support assembly 13 to abut against the ground of the roadway, so as to effectively relieve the chassis pressure of the tunneling equipment 1000 through the double support method of up and down, prevent the chassis from being damaged or sinking to the bottom, and effectively improve the support stability, avoid the tunneling equipment 1000 from shifting sideways or retreating, thereby improving the position accuracy of the cutting head, being conducive to accurately controlling the feed amount, and improving the construction effect. Secondly, a four-bar linkage structure is formed by the connecting seat 11, the bottom support assembly 13, the support limiting assembly 14 and the adjusting oil cylinder 15, which can quickly and stably adjust the support height of the top support assembly 12, and at the same time keep the bottom support assembly 13 in a state of tightly abutting against the ground. The support adjustment structure is simple and efficient, the support effect is better, and the stability is stronger.

[0039] Preferably, the first end of the connecting seat 11 is used to connect with the chassis 2 of the tunneling equipment 1000, the second end of the connecting seat 11 is hinged to the support limiting assembly 14, and the position of the connecting seat 11 between its first end and the second end is hinged to the bottom support assembly 13. The connecting seat 11 is stably fixed by the chassis 2 of the tunneling equipment 1000 and the bottom support assembly 13, so that the top support assembly 12 can be stably supported through the connecting seat 11, and the top support effect is strengthened.

[0040] As Figure 3 shown, the top support assembly 12 includes a fixed plate 121 and a movable plate 122. The fixed plate 121 and the movable plate 122 are stacked and arranged at intervals. One of the fixed plate 121 and the movable plate 122 has a ball socket structure 123, and the other is provided with a ball head 124 embedded in the ball socket structure 123 and used for rotating relative to the ball socket structure 123. Both the support limiting assembly 14 and the adjusting oil cylinder 15 are connected to the fixed plate 121. The movable plate 122 is used to abut against the roof of the roadway and adaptively adjust the support angle through the cooperation of the ball head 124 and the ball socket structure 123. That is, the ball head 124 can rotate in all directions relative to the ball socket structure 123. Through the cooperation of the ball head 124 and the ball socket structure 123, the movable plate 122 can adapt to the roofs in different inclined states, ensuring that the movable plate 122 is in a state of tightly abutting against the roof of the roadway, and further improving the top support effect.

[0041] In this embodiment, the ball socket structure 123 is formed on the surface of the movable plate 122 facing the fixed plate 121, and the ball head 124 is disposed on the surface of the fixed plate 121 facing the movable plate 122. The ball head 124 protrudes from the surface of the fixed plate 121 and is embedded in the ball socket structure 123 to support the movable plate 122 at a certain height relative to the fixed plate 121, so that the movable plate 122 can be floatingly adjusted through the gap between the movable plate 122 and the fixed plate 121. In other embodiments, the ball socket structure 123 may also be formed on the surface of the fixed plate 121 facing the movable plate 122. Correspondingly, at this time, the ball head 124 is disposed on the surface of the movable plate 122 facing the fixed plate 121. The ball head 124 protrudes from the surface of the movable plate 122 and is embedded in the ball socket structure 123, and can also support the movable plate 122 through the cooperation of the ball head 124 and the ball socket structure 123 and allow the movable plate 122 to adaptively adjust the top support angle.

[0042] As Figure 4 shown, two sets of elastic reset components 125 are further provided on the fixed plate 121. The two sets of elastic reset components 125 are symmetrically arranged on opposite sides of the ball head 124 and are respectively connected to the movable plate 122. Both sets of elastic reset components 125 are configured to apply an elastic force to the movable plate 122 in a direction close to the fixed plate 121, or both sets of elastic reset components 125 are configured to apply an elastic force to the movable plate 122 in a direction away from the fixed plate 121.

[0043] Specifically, when both sets of elastic reset components 125 are used to apply an elastic force on the movable plate 122 in the direction close to the fixed plate 121, the movable plate 122 can be tightened on the fixed plate 121 by the two sets of elastic reset components 125 together, realizing the elastic fixation of the movable plate 122. When the movable plate 122 is subjected to the reverse force of the roadway roof, the movable plate 122 can be reset through the cooperation of the two sets of elastic reset components 125. During the process of the movable plate 122 abutting against the roadway roof, the movable plate 122 can be driven to closely fit the roadway roof through the cooperation of the two sets of elastic reset components 125. Similarly, when both sets of elastic reset components 125 are used to apply an elastic force on the movable plate 122 in the direction away from the fixed plate 121, the movable plate 122 can be supported on the fixed plate 121 by the two sets of elastic reset components 125 together, realizing the elastic support and fixation of the movable plate 122. When the movable plate 122 is subjected to the reverse force of the roadway roof, the movable plate 122 can be reset through the cooperation of the two sets of elastic reset components 125. During the process of the movable plate 122 abutting against the roadway roof, the movable plate 122 can be driven to closely fit the roadway roof through the cooperation of the two sets of elastic reset components 125.

[0044] Further, each set of elastic reset components 125 includes one or more elastic reset components 125. When each set of elastic reset components 125 includes multiple elastic reset components 125, the multiple elastic reset components 125 in the two sets of elastic reset components 125 are arranged in one-to-one correspondence to stably support the relative two sides of the movable plate 122 and ensure the force balance of the movable plate 122.

[0045] Further, the elastic reset component 125 includes a guide cylinder 1251, a bolt 1252, a nut 1253 and a spring 1254. The guide cylinder 1251 is installed on the side of the fixed plate 121 away from the movable plate 122. The first end of the bolt 1252 is installed on the movable plate 121. The second end of the bolt 1252 passes through the fixed plate 121 and the guide cylinder 1251 in sequence and is placed in the guide cylinder 1251. The nut 1253 is threadedly connected to the second end of the bolt 1252. The spring 1254 is sleeved on the bolt 1252 and elastically presses between the fixed plate 121 and the nut 1253. Thus, an elastic force in the direction away from the fixed plate 121 is applied to the nut 1253 through the spring 1254. Further, the movable plate 122 is tightened on the fixed plate 121 through the cooperation of the nut 125 and the bolt 1252, realizing the elastic fixation of the movable plate 122 relative to the fixed plate 121.

[0046] As Figure 5As shown, the support and limit assembly 14 includes a first support cylinder 141 and a second support cylinder 142 nested with each other. A first limit hole (not shown in the figure, the same below) is provided on the first support cylinder 141. A plurality of second limit holes 1421 are provided on the second support cylinder 142 at intervals along its length direction. The first support cylinder 141 is used to telescopically move relative to the second support cylinder 142 to a state where the first limit hole is aligned with any one of the second limit holes 1421. The limit structure includes a limit pin 143. The limit pin 143 is used to pass through the first limit hole and the corresponding second limit hole 1421, so as to lock and limit the first support cylinder 141 relative to the second support cylinder 142, and further lock the telescopic length of the support and limit assembly 14.

[0047] During use, the limit pin 143 can be pulled out first to release the limit, and then the distance between the bottom support assembly 13 and the top support assembly 12 can be adjusted through the adjusting oil cylinder 15. During the process of adjusting the height of the top support assembly 12, the first support cylinder 141 is driven to telescopically move relative to the second support cylinder 142. After the top support assembly 12 is adjusted to a state of tightly abutting against the roadway roof, the limit pin 143 is inserted into the corresponding limit hole to realize the locking and limiting of the first support cylinder 141 relative to the second support cylinder 142. Then, the top support assembly 12 can be stably supported by the support and limit assembly 14, avoiding the continuous force on the adjusting oil cylinder 15 and preventing the adjusting oil cylinder 15 from being damaged due to the vibration of the tunneling operation of the tunneling equipment 1000.

[0048] As Figure 2 As shown, the anti-retreat machine support device 1 further includes a support frame 16. A pair of the connecting seats 11, the bottom support assemblies 13, the top support assemblies 12, the support and limit assemblies 14 and the adjusting oil cylinders 15 are provided and symmetrically arranged on opposite sides of the support frame 16. The support and bottom support effects are strengthened through the symmetrically arranged support structures, so that the tunneling equipment 1000 is in balanced force.

[0049] Preferably, the first end of the support frame 16 is used to extend to the front end of the tunneling equipment 1000 and connect with the top support assembly 12. The second end of the support frame 16 is used to extend to the rear end of the tunneling equipment 1000 and is provided with a support seat 161. The support seat 161 is used to connect with the chassis 2. The anti-retreat machine support device 1 connects the front end and the rear end of the chassis 2 into a whole through the support frame 16. While realizing the support and fixation of the chassis 2, the overall structural strength of the chassis 2 can also be improved, and the stability of the tunneling equipment 1000 can be further improved.

[0050] Preferably, the anti-retreat machine support device 1 further includes a protective rolling curtain 17, which is arranged on the top support assembly 12. The protective rolling curtain 17 is used to be pulled downwards to form a protective screen on one side of the tunneling equipment 1000, so as to separate the chassis 2 of the tunneling equipment 1000 from the cutting device 3, and prevent the dust generated during the operation of the cutting device 3 from directly entering the chassis 2.

[0051] As Figure 6 shown, the bottom support assembly 13 includes a bottom support plate 131 and a plurality of anti-slip protrusions 132 arranged on the bottom support plate 131. Both the bottom support plate 131 and the anti-slip protrusions 132 are used to abut against the ground of the roadway. The anti-slip protrusions 132 enhance the wall adhesion of the bottom support plate 131, reduce the ground contact pressure, and improve the support stability.

[0052] As Figure 1 shown, as a second aspect, an embodiment of the present invention further provides a tunneling equipment 1000, including a chassis 2, a cutting device 3 connected to the chassis 2, and the above anti-retreat machine support device 1. The connecting seat 11 of the anti-retreat machine support device 1 is connected to the chassis 2. When the tunneling equipment 1000 is tunneling, the top support assembly 12 and the bottom support assembly 13 of the anti-retreat machine support device 1 can respectively support the roof and the ground of the roadway, strengthen the support of the tunneling equipment 1000, effectively relieve the chassis pressure of the tunneling equipment 1000, prevent the chassis 2 from being damaged or sinking into the ground, and improve the stability, avoid the whole tunneling equipment 1000 from shifting sideways or retreating, thereby improving the position accuracy of the cutting device 3, being beneficial to accurately controlling the feed rate, and improving the construction effect.

[0053] As Figure 7 shown, the chassis 2 includes crawler plates 21 for walking on the ground. The crawler plates 21 are provided with anti-slip flanges 211 protruding from the surface of the crawler plates 21. The anti-slip flanges 211 increase the anti-slip plate height of the crawler plates 21, thereby increasing the friction coefficient relative to the ground and enhancing the ground gripping ability of the tunneling equipment 1000.

[0054] As Figure 8 shown, the cutting device 3 includes a drum 31 and a plurality of cutting teeth 32 arranged on the drum 31. The drum 31 is used to drive the plurality of cutting teeth 32 to rotate for cutting operations. The heights of the plurality of cutting teeth 32 are the same, and all adopt short tooth designs, effectively reducing the coal cutting resistance and reducing the active power for the retreat of the tunneling equipment 1000.

[0055] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. For those skilled in the art, various modifications and variations can be made to the present utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. An anti-retreat machine support device for supporting and fixing a tunneling device in a roadway, characterized in that, The anti-retreat machine support device includes a connecting seat (11), a top support assembly (12), a bottom support assembly (13), a support limiting assembly (14), and an adjusting oil cylinder (15). The connecting seat (11) is used to connect with the chassis (2) of the tunneling equipment. The top support assembly (12) is used to abut against the roof of the roadway. The bottom support assembly (13) is used to abut against the ground of the roadway. The first end of the support limiting assembly (14) is hinged to the connecting seat (11), and the second end of the support limiting assembly (14) is hinged to the top support assembly (12). The support limiting assembly (14) adopts a telescopic structure, and a limiting structure for locking its telescopic length is provided on the support limiting assembly (14). The first end of the adjusting oil cylinder (15) is hinged to the bottom support assembly (13), and the second end of the adjusting oil cylinder (15) is hinged to the top support assembly (12). The position of the bottom support assembly (13) offset relative to the adjusting oil cylinder (15) is hinged to the connecting seat (11). The adjusting oil cylinder (15) is used to adjust the distance between the bottom support assembly (13) and the top support assembly (12).

2. The anti-retreat machine support device according to claim 1, characterized in that, The first end of the connecting seat (11) is used to connect with the chassis (2) of the tunneling equipment. The second end of the connecting seat (11) is hinged to the support limiting assembly (14). The position of the connecting seat (11) between its first end and the second end is hinged to the bottom support assembly (13).

3. The anti-retreat machine support device according to claim 1, characterized in that, The top support assembly (12) includes a fixed plate (121) and a movable plate (122) that are stacked and spaced apart. One of the fixed plate (121) and the movable plate (122) has a ball socket structure (123), and the other is provided with a ball head (124) embedded in the ball socket structure (123) and used to rotate relative to the ball socket structure (123). Both the support limiting assembly (14) and the adjusting oil cylinder (15) are connected to the fixed plate (121). The movable plate (122) is used to abut against the roof of the roadway and adaptively adjust the support angle through the cooperation of the ball head (124) and the ball socket structure (123).

4. The anti-retreat machine support device according to claim 3, characterized in that, Two groups of elastic reset components (125) are further provided on the fixed plate (121). The two groups of elastic reset components (125) are symmetrically arranged on opposite sides of the ball head (124) and are respectively connected to the movable plate (122). Both groups of elastic reset components (125) are used to apply an elastic force to the movable plate (122) in the direction close to the fixed plate (121), or both groups of elastic reset components (125) are used to apply an elastic force to the movable plate (122) in the direction away from the fixed plate (121).

5. The anti-retreat machine support device according to claim 1, characterized in that, The support and limit assembly (14) includes a first support cylinder (141) and a second support cylinder (142) that are nested with each other. The first support cylinder (141) is provided with a first limit hole, and the second support cylinder (142) is provided with a plurality of second limit holes (1421) at intervals along its length direction. The first support cylinder (141) is configured to telescopically move relative to the second support cylinder (142) to a state where the first limit hole is aligned with any one of the second limit holes (1421). The limit structure includes a limit pin (143). The limit pin (143) is configured to pass through the first limit hole and the corresponding second limit hole (1421) to lock and limit the first support cylinder (141) relative to the second support cylinder (142).

6. The anti-retreat machine support device according to claim 1, wherein The anti-retreat machine support device further includes a support frame (16). A pair of the connection seats (11), the bottom support assembly (13), the top support assembly (12), the support and limit assembly (14), and the adjustment oil cylinder (15) are symmetrically arranged on opposite sides of the support frame (16).

7. The anti-retreat machine support device according to claim 6, characterized in that, The first end of the support frame (16) is configured to extend to the front end of the tunneling device and connect to the top support assembly (12). The second end of the support frame (16) is configured to extend to the rear end of the tunneling device and is provided with a support seat (161). The support seat (161) is configured to connect to the chassis (2).

8. The anti-retreat machine support device according to claim 1, characterized in that, A protective rolling curtain (17) is provided on the top support assembly (12). The protective rolling curtain (17) is configured to be pulled down to form a protective shield on one side of the tunneling device.

9. The anti-retreat machine support device according to claim 1, characterized in that, The bottom support assembly (13) includes a bottom support plate (131) and a plurality of anti-slip protrusions (132) disposed on the bottom support plate (131) and configured to abut against the roadway.

10. A tunneling device, comprising a chassis (2) and a cutting device (3) connected to the chassis (2), characterized in that, The tunneling device further includes the anti-retreat machine support device according to any one of claims 1 to 9. The connection seat (11) of the anti-retreat machine support device is connected to the chassis (2).

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