Pressing device for tunnel blasting

Abstract

The utility model provides a pressing device for tunnel blasting, and relates to the field of pressing devices. According to the device, a supporting structure comprises a first supporting rod, a second supporting rod and a supporting telescopic connecting piece, the supporting telescopic connecting piece is connected with the first supporting rod and the second supporting rod, a supporting protruding block is arranged on the outer wall of the first supporting rod, an adjusting device comprises an adjusting structure and a rotating structure, and the bottom end of the rotating structure is arranged at the top end of the adjusting structure; the top end of the rotating structure is in clamping connection with the supporting protruding block, and the bottom end of the adjusting structure is fixedly connected with the ground. The middle of the baffle device is connected with the top end of the first supporting rod, the baffle device is supported by the supporting structure to be erected, the supporting structure and the baffle device move up and down through the adjusting structure, and the supporting structure and the baffle device rotate around the rotating structure in the circumferential direction. The device solves the problem that the blasting effect of the smooth surface on the periphery of the lower step is poor due to the fact that rock mass fragmentation is too fast during blasting and explosives cannot fully act on the rock mass.

Description

Technical Field

[0001] The utility model relates to the field of suppression devices, in particular to a suppression device used for tunnel blasting. Background Art

[0002] In the existing rock tunnel blasting construction technology, explosives are mainly used to blast and excavate the tunnel. For step blasting construction, the existing technology lacks a device to suppress the surrounding rock around the tunnel when blasting the lower step, resulting in the rock mass breaking too quickly during blasting, and the explosives cannot fully act on the rock mass, resulting in poor blasting effect on the smooth surface around the lower step. Therefore, there is an urgent need for a suppression device for tunnel blasting, which solves the problem that the rock mass breaks too quickly during blasting, and the explosives cannot fully act on the rock mass, resulting in poor blasting effect on the smooth surface around the lower step, and ensures the tunnel blasting effect. Utility Model Content

[0003] The purpose of the utility model is to provide a suppression device for tunnel blasting to improve the above problems. In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0004] A suppression device for tunnel blasting, comprising: the support structure comprises a first support rod, a second support rod and a support telescopic connecting piece, the two ends of the support telescopic connecting piece are respectively connected to the first support rod and the second support rod, the outer wall of the first support rod is provided with a support protrusion, the second support rod is arranged on the ground, an adjusting device, the adjusting device comprises an adjusting structure and a rotating structure, the bottom end of the rotating structure is arranged on the top end of the adjusting structure, the top end of the rotating structure is engaged with the supporting protrusion, and the bottom end of the adjusting structure is fixedly connected to the ground; and a baffle device, the middle part of the baffle device is connected to the top end of the first support rod, the baffle device is supported and erected by the support structure, the support structure and the baffle device move up and down through the adjusting structure, and the support structure and the baffle device rotate circumferentially around the rotating structure.

[0005] Preferably, the first support rod is a hollow rod body, the inner wall of the first support rod is threaded, the outer wall of the support telescopic connecting piece is threaded, the top outer wall of the support telescopic connecting piece is threadedly connected to the inner wall of the first support rod, and the bottom end of the support telescopic connecting piece is fixedly connected to the top end of the second support rod.

[0006] Preferably, the baffle device includes a first bottom baffle and a bottom fixing piece, the first bottom baffle is arranged on the ground, a baffle fixing hole is opened on the first bottom baffle, and the bottom fixing piece passes through the baffle fixing hole to fix the first bottom baffle on the ground.

[0007] Preferably, the baffle device includes a first baffle and a second baffle, a dovetail block is provided on one side of the first baffle and the second baffle, a dovetail groove is provided on the other side of the first baffle and the second baffle, and the dovetail block of the first baffle and the dovetail groove of the second baffle cooperate with each other.

[0008] Preferably, the first baffle includes an upper baffle and a lower baffle, the bottom end of the upper baffle is fixedly connected to the top end of the lower baffle, the bottom end of the upper baffle is connected to the top end of the first support rod, and the bottom surface of the lower baffle is horizontally arranged with the top surface of the first bottom baffle.

[0009] Preferably, a baffle groove is opened at the bottom end of the upper baffle, the top end of the first support rod is arranged in the baffle groove, the thickness value of the top end of the upper baffle is greater than the thickness value of the bottom end, and the thickness value of the top end of the upper baffle is greater than the thickness value of the lower baffle.

[0010] Preferably, the adjustment structure includes an adjusting base, and the adjusting base is provided with a first base support rod and a second base support rod, one end of the first base support rod is connected to the middle part of the adjusting base, the other end of the first base support rod is connected to the second base support rod, the middle part of the first base support rod extends upward to form a third base support rod, one end of the third base support rod away from the middle part of the first base support rod is connected to the top of the adjusting base, and one end of the second base support rod away from the first base support rod is connected to the first bottom baffle.

[0011] Preferably, an adjustment fixing hole and a support fixing hole are opened in the middle of the first bottom baffle, the bottom of the adjustment base is arranged in the adjustment fixing hole, the bottom of the second base support rod is arranged in the support fixing hole, and the adjustment base is arranged parallel to the second base support rod.

[0012] Preferably, a support rod groove is provided at the top of the support protrusion, the adjustment structure includes a jack lifting member, the bottom end of the rotating structure is arranged at the top of the jack lifting member, a rotating groove is provided at the top of the rotating structure, a ball is arranged in the rotating groove, the support rod groove and the rotating groove form a card cavity, and the card cavity is engaged and connected with the ball.

[0013] Preferably, the minimum height of the jack lifting member is one third of the height of the baffle device.

[0014] The beneficial effects of this structure are:

[0015] The utility model introduces a support structure, an adjustment device and a baffle device. The top of the support structure is connected to the baffle device, and the bottom of the support structure is connected to the ground. The baffle device and the support structure solve the problem that there is no device to suppress tunnel blasting, which causes the rock mass to break too quickly during blasting and the explosives cannot fully act on the rock mass. The support structure is provided with a support protrusion, and the adjustment device includes an adjustment structure and a rotating structure. The top of the rotating structure is connected to the support protrusion, and the bottom of the rotating structure is connected to the adjustment structure. The support structure and the baffle device move up and down through the adjustment structure, and the support structure and the baffle device rotate circumferentially around the rotating structure. The adjustment device makes the support structure and the baffle device relatively match the inner wall of the tunnel, ensuring the effect of tunnel blasting.

[0016] Other features and advantages of the utility model will be described in the following description, and some of them will become obvious from the description, or be understood by implementing the embodiments of the utility model. The purpose and other advantages of the utility model can be achieved and obtained by the structures specifically pointed out in the written description, claims, and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a front view schematic diagram of the overall device of the utility model;

[0019] Figure 2 It is a left side schematic diagram of the overall device of the utility model;

[0020] Figure 3 This is a schematic diagram of the connection between the first support rod and the adjustment structure of the utility model;

[0021] Figure 4 It is a top view of the first bottom baffle in the utility model;

[0022] Figure 5 This is a schematic diagram of the cooperation between the first baffle and the second baffle of the utility model;

[0023] Markings in the figure:

[0024] 1. Support structure; 2. Adjustment device; 3. Baffle device; 5. First bottom baffle; 6. Bottom fixing member; 11. First support rod; 12. Second support rod; 13. Support telescopic connecting member; 21. Adjustment structure; 22. Rotation structure; 31. First baffle; 32. Second baffle; 111. Support protrusion; 211. Adjustment base; 212. First base support rod; 213. Second base support rod; 214. Third base support rod; 215. Jack lifting member; 221. Ball; 311. Upper baffle; 312. Lower baffle; 313. Baffle groove. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical scheme and advantages of the embodiment of the utility model clearer, the technical scheme in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, rather than all the embodiments. The components of the embodiment of the utility model generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiment of the utility model provided in the drawings is not intended to limit the scope of the utility model for protection, but merely represents the selected embodiment of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model.

[0026] It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. At the same time, in the description of the present utility model, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0027] like Figure 1As shown, a suppression device for tunnel blasting comprises: the support structure 1 comprises a first support rod 11, a second support rod 12 and a support telescopic connecting piece 13, the two ends of the support telescopic connecting piece 13 are respectively connected to the first support rod 11 and the second support rod 12, the outer wall of the first support rod 11 is provided with a support protrusion 111, and the second support rod 12 is arranged on the ground, an adjusting device 2, the adjusting device 2 comprises an adjusting structure 21 and a rotating structure 22, the bottom end of the rotating structure 22 is arranged on the top end of the adjusting structure 21, the top end of the rotating structure 22 is snap-connected with the support protrusion 111, and the bottom end of the adjusting structure 21 is fixedly connected to the ground; and a baffle device 3, the middle part of the baffle device 3 is connected to the top end of the first support rod 11, the baffle device 3 is supported and erected by the support structure 1, the support structure 1 and the baffle device 3 move up and down through the adjusting structure 21, and the support structure 1 and the baffle device 3 rotate circumferentially around the rotating structure 22.

[0028] The working process of this device is: according to the preset distance between the baffle device 3 and the side wall of the surrounding rock, the height of the adjusting structure 21 is adjusted, and the angle of the supporting structure 1 is adjusted by the rotating structure 22, so that the height and angle of the supporting structure 1 and the baffle device 3 are relatively matched with the side wall of the surrounding rock, and the bottom of the second support rod 12 is matched with the hole drilled in the ground, and the reaction force makes the baffle device 3 press against the side wall of the surrounding rock.

[0029] In this structure, the first support rod 11 is a hollow rod body, the inner wall of the first support rod 11 is threaded, the outer wall of the support telescopic connecting piece 13 is threaded, the top outer wall of the support telescopic connecting piece 13 is threadedly connected to the inner wall of the first support rod 11, and the bottom end of the support telescopic connecting piece 13 is fixedly connected to the top end of the second support rod 12.

[0030] The support telescopic connection 13 and the first support rod 11 are adjusted through threads to change the distance between the support telescopic connection 13 and the first support rod 11. A cone head is provided at the bottom of the second support rod 12, and the cone head is set in a hole drilled in the ground. The support structure 1 provides a reaction force for the baffle device 3 to tighten the side wall of the surrounding rock.

[0031] In the utility model, the baffle device 3 includes a first bottom baffle 5 and a bottom fixing member 6. The first bottom baffle 5 is arranged on the ground. A baffle fixing hole is opened on the first bottom baffle 5. The bottom fixing member 6 passes through the baffle fixing hole to fix the first bottom baffle 5 on the ground.

[0032] The baffle device 3 includes a second bottom baffle, one side of the first bottom baffle 5 and the second bottom baffle are both provided with a protrusion, the other side of the first bottom baffle 5 and the second bottom baffle are both provided with a groove, and the groove of the first bottom baffle 5 and the protrusion of the second bottom baffle cooperate with each other.

[0033] Preferably, outer sides of the first bottom baffle plate 5 and the second bottom baffle plate are both covered with a rough rubber layer, and the rough rubber layer is used to increase the friction between the first bottom baffle plate 5 and the ground.

[0034] like Figure 5 As shown, in order to clarify the specific setting of the baffle device 3, the baffle device 3 includes a first baffle 31 and a second baffle 32, one side of the first baffle 31 and the second baffle 32 are provided with a dovetail block, the other side of the first baffle 31 and the second baffle 32 are provided with a dovetail groove, and the dovetail block of the first baffle 31 and the dovetail groove of the second baffle 32 cooperate with each other.

[0035] Preferably, the first baffle plate 31 and the second baffle plate 32 are steel plate structures.

[0036] To clarify the specific structure of the first baffle 31, the first baffle 31 includes an upper baffle 311 and a lower baffle 312, the bottom end of the upper baffle 311 and the top end of the lower baffle 312 are fixedly connected, the bottom end of the upper baffle 311 is connected to the top end of the first support rod 11, and the bottom surface of the lower baffle 312 is horizontally arranged with the top surface of the first bottom baffle 5.

[0037] In the present invention, a baffle groove 313 is provided at the bottom end of the upper baffle 311, and the top end of the first support rod 11 is arranged in the baffle groove 313. The thickness of the top end of the upper baffle 311 is greater than the thickness of the bottom end, and the thickness of the top end of the upper baffle 311 is greater than the thickness of the lower baffle 312. According to the different thickness values ​​of the upper baffle 311 and the lower baffle 312, the shape of the upper baffle 311 and the lower baffle 312 after being connected is relatively matched with the surrounding rock side wall.

[0038] like Figure 2As shown, in this structure, the adjustment structure 21 includes an adjustment base 211, and the adjustment base 211 is provided with a first base support rod 212 and a second base support rod 213, one end of the first base support rod 212 is connected to the middle of the adjustment base 211, the other end of the first base support rod 212 is connected to the second base support rod 213, the middle of the first base support rod 212 extends upward to form a third base support rod 214, one end of the third base support rod 214 away from the middle of the first base support rod 212 is connected to the top of the adjustment base 211, and one end of the second base support rod 213 away from the first base support rod 212 is connected to the first bottom baffle 5. The arrangement of the first base support rod 212, the second base support rod 213 and the third base support rod 214 effectively disperses the gravity of the support structure 1 and the baffle device 3, so that the adjustment structure 21 has better stability.

[0039] like Figure 4 As shown, in order to clarify the specific structure of the first bottom baffle 5, an adjustment fixing hole and a support fixing hole are opened in the middle of the first bottom baffle 5, the bottom of the adjustment base 211 is arranged in the adjustment fixing hole, and the bottom of the second base support rod 213 is arranged in the support fixing hole, and the adjustment base 211 is arranged parallel to the second base support rod 213.

[0040] like Figure 3 As shown, in order to clarify the connection relationship between the support structure 1 and the adjustment device 2, a support rod groove is provided at the top of the support protrusion 111, the adjustment structure 21 includes a jack lifting member 215, the bottom end of the rotating structure 22 is arranged at the top of the jack lifting member 215, and a rotating groove is provided at the top of the rotating structure 22. A ball 221 is arranged in the rotating groove, the support rod groove and the rotating groove form a cavity, and the clamping cavity is clamped and connected with the ball 221.

[0041] A fixing device is provided between the support rod groove and the rotation groove, and the fixing device is used to fix the positions of the support structure 1 and the baffle device 3 .

[0042] In order to clarify the minimum height of the jack lifting member 215 , the minimum height value of the jack lifting member 215 is one third of the height value of the baffle device 3 .

[0043] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

[0044] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A suppression device for tunnel blasting, characterized in that: include: A support structure (1), the support structure (1) comprising a first support rod (11), a second support rod (12) and a support telescopic connecting member (13), the two ends of the support telescopic connecting member (13) being respectively connected to the first support rod (11) and the second support rod (12), the outer wall of the first support rod (11) being provided with a support protrusion (111), the second support rod (12) being arranged on the ground, An adjusting device (2), the adjusting device (2) comprising an adjusting structure (21) and a rotating structure (22), the bottom end of the rotating structure (22) being arranged on the top end of the adjusting structure (21), the top end of the rotating structure (22) being snap-connected with the supporting protrusion (111), and the bottom end of the adjusting structure (21) being fixedly connected with the ground; and A baffle device (3), wherein the middle portion of the baffle device (3) is connected to the top end of the first support rod (11), the baffle device (3) is supported and erected by the support structure (1), the support structure (1) and the baffle device (3) are moved up and down by an adjustment structure (21), and the support structure (1) and the baffle device (3) are rotated circumferentially around a rotating structure (22).

2. The suppression device for tunnel blasting according to claim 1, characterized in that: The first support rod (11) is a hollow rod body, the inner wall of the rod body of the first support rod (11) is threaded, the outer wall of the supporting telescopic connecting piece (13) is threaded, the top outer wall of the supporting telescopic connecting piece (13) is threadedly connected to the inner wall of the first support rod (11), and the bottom end of the supporting telescopic connecting piece (13) is fixedly connected to the top end of the second support rod (12).

3. The suppression device for tunnel blasting according to claim 1, characterized in that: The baffle device (3) comprises a first bottom baffle (5) and a bottom fixing member (6); the first bottom baffle (5) is arranged on the ground; a baffle fixing hole is provided on the first bottom baffle (5); the bottom fixing member (6) passes through the baffle fixing hole to fix the first bottom baffle (5) on the ground.

4. The suppression device for tunnel blasting according to claim 3, characterized in that: The baffle device (3) comprises a first baffle (31) and a second baffle (32); one side of the first baffle (31) and the second baffle (32) are both provided with a dovetail block; the other side of the first baffle (31) and the second baffle (32) are both provided with a dovetail groove; the dovetail block of the first baffle (31) and the dovetail groove of the second baffle (32) cooperate with each other.

5. The suppression device for tunnel blasting according to claim 4, characterized in that: The first baffle (31) comprises an upper baffle (311) and a lower baffle (312); the bottom end of the upper baffle (311) is fixedly connected to the top end of the lower baffle (312); the bottom end of the upper baffle (311) is connected to the top end of the first support rod (11); and the bottom surface of the lower baffle (312) is horizontally arranged with the top surface of the first bottom baffle (5).

6. The suppression device for tunnel blasting according to claim 5, characterized in that: A baffle groove (313) is provided at the bottom end of the upper baffle plate (311), the top end of the first support rod (11) is arranged in the baffle groove (313), the thickness of the top end of the upper baffle plate (311) is greater than the thickness of the bottom end, and the thickness of the top end of the upper baffle plate (311) is greater than the thickness of the lower baffle plate (312).

7. The suppression device for tunnel blasting according to claim 3, characterized in that: The adjustment structure (21) comprises an adjustment base (211), wherein the adjustment base (211) is provided with a first base support rod (212) and a second base support rod (213), wherein one end of the first base support rod (212) is connected to the middle part of the adjustment base (211), and the other end of the first base support rod (212) is connected to the second base support rod (213), and the middle part of the first base support rod (212) extends upward to form a third base support rod (214), and one end of the third base support rod (214) away from the middle part of the first base support rod (212) is connected to the top of the adjustment base (211), and one end of the second base support rod (213) away from the first base support rod (212) is connected to the first bottom baffle (5).

8. The suppression device for tunnel blasting according to claim 7, characterized in that: An adjustment fixing hole and a support fixing hole are provided in the middle of the first bottom baffle (5); the bottom of the adjustment base (211) is arranged in the adjustment fixing hole; the bottom of the second base support rod (213) is arranged in the support fixing hole; the adjustment base (211) and the second base support rod (213) are arranged in parallel.

9. The suppression device for tunnel blasting according to claim 7, characterized in that: A support rod groove is provided at the top of the support protrusion (111); the adjustment structure (21) comprises a jack lifting member (215); the bottom end of the rotating structure (22) is arranged at the top of the jack lifting member (215); a rotating groove is provided at the top of the rotating structure (22); a ball (221) is arranged in the rotating groove; the support rod groove and the rotating groove form a clamping cavity; the clamping cavity is clamped and connected with the ball (221).

10. The suppression device for tunnel blasting according to claim 9, characterized in that: The minimum height value of the jack lifting member (215) is one third of the height value of the baffle device (3).

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