Protective device for cross cavern blasting excavation

Abstract

The utility model discloses a cross cavern blasting excavation protection device which comprises an inverted arch, a cushion block and an adjusting mechanism, a protection platform is arranged above the inverted arch, an air duct and a machine body are arranged on the top of the protection platform, the cushion block is fixedly connected to the top of the inverted arch, and the adjusting mechanism is located between the cushion block and the protection platform. The adjusting mechanism is used for adjusting the distance between the protection platform and the inverted arch and comprises a bearing frame and a first plate body, the bearing frame is located below the protection platform, and the first plate body is fixedly connected to the top of the cushion block. The bearing frame, the first plate body, the second plate body, the locking plate, the threaded column and the positioning piece are matched with one another, the first plate body and the second plate body are connected with the bearing frame, the locking plate limits different positions of the bearing frame and the second plate body, and therefore the distance between the protection platform and the inverted arch can be adjusted conveniently, and the safety of the protection platform is improved. And the device is convenient to adapt to cross caverns with different internal heights for protection.

Description

Technical Field

[0001] This utility model relates to the field of protection during blasting excavation of cross-cavities, and particularly to a protective device for blasting excavation of cross-cavities. Background Technology

[0002] Cross-shaped chambers are usually excavated by blasting. In order to prevent flying debris from impacting the ventilation duct and conveyor belt during the blasting process, protective devices are used.

[0003] Application No. 202121499601.3 mentions a protective device for blasting excavation of cross-chambers, including a protective frame platform and a fixing device. The protective frame platform is fixedly connected to the existing tunnel through the fixing device. The protective frame platform is located between the height of the existing equipment and the blasting excavation section. The protective frame platform is set along the longitudinal direction of the existing tunnel. The length of the protective frame platform along the longitudinal direction of the existing tunnel is greater than or equal to the width of the blasting excavation section. The two sides of the protective frame platform are respectively adjacent to the two sides of the existing tunnel. The second vertical support includes several vertically set support columns. The upper end of all support columns is connected to the corresponding support longitudinal beam, and the lower end is connected to the invert arch of the existing tunnel.

[0004] The protective frame platform is used to shield the ventilation duct and conveyor belt, and support columns are used to support the protective frame platform and the invert arch. During blasting, the protective frame platform shields the flying debris to prevent it from impacting the ventilation duct and conveyor belt. The support columns are usually of fixed size, but the internal height of different cross chambers varies, which may limit the height of the protective frame platform. Therefore, it is necessary to adjust the distance between the protective frame platform and the invert arch according to the internal height of the cross chamber in the cross chamber blasting excavation protection device. Summary of the Invention

[0005] The purpose of this invention is to provide a protective device for blasting excavation of cross-chambers, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a protective device for blasting excavation of cross-chambers, comprising:

[0007] An inverted arch, with a protective platform above it, and a ventilation duct and machine body on top of the protective platform;

[0008] A pad block, which is fixedly connected to the top of the invert arch;

[0009] An adjustment mechanism is located between the pad and the protective platform, and is used to adjust the distance between the protective platform and the invert arch.

[0010] Preferably, the adjustment mechanism includes:

[0011] A support frame, located below the protective platform;

[0012] The first plate is fixedly connected to the top of the pad, and a positioning hole is provided on the side of the first plate.

[0013] The second plate is fixedly connected to the bottom of the protective platform, and both the second plate and the first plate are slidably inserted into the interior of the load-bearing frame.

[0014] A locking element, located on the support frame, is used to lock the relative position of the second plate body and the support frame;

[0015] A positioning element is located at the bottom of the support frame and is used to lock the relative position of the first plate and the support frame.

[0016] Preferably, the adjustment mechanism further includes:

[0017] A guide seat, which is fixedly connected to the side of the support frame;

[0018] The guide frame is fixedly connected to the side of the second plate and is slidably inserted into the inner cavity of the guide seat.

[0019] Preferably, the locking element includes:

[0020] A locking plate, which is slidably inserted into the side of the support frame;

[0021] The limiting groove is equidistantly opened on the side of the second plate, and the locking plate is slidably inserted into the inner cavity of the limiting groove.

[0022] A connecting plate, which is fixedly sleeved on the outside of the locking plate.

[0023] Preferably, the locking element further includes:

[0024] A threaded column, one end of which is fixedly connected to a bearing frame, and the outer wall of which is slidably inserted into a connecting plate;

[0025] A locking ring, which is threaded onto the outside of a threaded post.

[0026] Preferably, the positioning element includes:

[0027] A support base, which is fixedly connected to the bottom of the support frame;

[0028] The positioning post is threadedly inserted into the interior of the bearing seat, and the positioning post is slidably inserted into the inner cavity of the positioning hole.

[0029] The technical effects and advantages of this utility model are as follows:

[0030] This utility model utilizes the cooperation of a support frame, a first plate, a second plate, a locking plate, a connecting plate, a locking ring, a threaded post, and a positioning component. The support frame covers the outside of the first and second plates, and the first and second plates are connected to the support frame, thus connecting the inverted arch and the protective platform. The locking plate limits the different positions of the support frame and the second plate, thereby facilitating the adjustment of the distance between the protective platform and the inverted arch, making it suitable for use in protecting cross chambers with different internal heights. Attached Figure Description

[0031] Figure 1 This is a side view of the present invention.

[0032] Figure 2 This is a front structural diagram of the present utility model.

[0033] Figure 3 This utility model Figure 2 Enlarged structural diagram at point A in the middle.

[0034] Figure 4 This is a front sectional view of the load-bearing frame of this utility model.

[0035] Figure 5 This is a front sectional view of the bearing seat of this utility model.

[0036] Figure 6 This is a schematic diagram of the structure of the second plate of this utility model.

[0037] In the diagram: 1. Inverted arch; 2. Protective platform; 3. Pad block; 4. Air duct; 5. Body; 6. Adjustment mechanism; 61. Bearing frame; 62. First plate; 63. Second plate; 64. Locking plate; 65. Connecting plate; 66. Locking ring; 67. Threaded post; 68. Bearing seat; 69. Positioning post; 610. Guide seat; 611. Guide frame. Detailed Implementation

[0038] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0039] This utility model provides, for example Figure 1-6 The image shows a protective device for blasting excavation of cross-chambers. Example

[0040] The device includes an inverted arch 1, a pad block 3, and an adjustment mechanism 6. The pad block 3 helps to support the first plate 62. A protective platform 2 is installed above the inverted arch 1. The protective platform 2 helps to shield the ventilation duct 4 and the machine body 5, preventing explosive debris from impacting the two. The inverted arch 1 and the protective platform 2 are installed between the ventilation duct 4 and the machine body 5 and the vertical height of the blasting excavation section. The ventilation duct 4 and the machine body 5 are installed on the top of the protective platform 2. The pad block 3 is fixedly connected to the top of the inverted arch 1. The adjustment mechanism 6 is located between the pad block 3 and the protective platform 2. The adjustment mechanism 6 is used to adjust the distance between the protective platform 2 and the inverted arch 1.

[0041] Furthermore, the adjustment mechanism 6 includes a support frame 61, a first plate 62, a second plate 63, a locking member, and a positioning member. The support frame 61 is conveniently fitted between the first plate 62 and the second plate 63 to support the first plate 62 and the second plate 63. The second plate 63 provides bottom support for the protective platform 2. The support frame 61 is located below the protective platform 2. The first plate 62 is fixedly connected to the top of the pad 3. A positioning hole is provided on the side of the first plate 62. The second plate 63 is fixedly connected to the bottom of the protective platform 2. The second plate 63 and the first plate 62 are slidably inserted into the interior of the support frame 61. The locking member is located on the support frame 61 and is used to lock the relative position of the second plate 63 and the support frame 61. The positioning member is located at the bottom of the support frame 61 and is used to lock the relative position of the first plate 62 and the support frame 61.

[0042] Furthermore, the adjustment mechanism 6 also includes a guide seat 610 and a guide frame 611. The guide seat 610 and the guide frame 611 facilitate the vertical guidance and reinforcement of the second plate 63. The guide seat 610 is fixedly connected to the side of the support frame 61, and the guide frame 611 is fixedly connected to the side of the second plate 63. The guide frame 611 and the inner cavity of the guide seat 610 are slidably interlocked.

[0043] Specifically, the locking components include a locking plate 64, a limiting groove, and a connecting plate 65. The locking plate 64 helps to limit the relative position of the bearing frame 61 and the second plate 63, thereby facilitating the adjustment of the length of the second plate 63 extending from the inside of the bearing frame 61, so as to adjust the height between the protective platform 2 and the invert arch 1, to adapt to the use of cross chambers with different internal heights. The connecting plate 65 helps to support the locking plate 64 and facilitates the operation of the locking plate 64. The locking plate 64 is slidably inserted into the side of the bearing frame 61, and the limiting groove is equidistantly opened on the side of the second plate 63. The locking plate 64 is slidably inserted into the inner cavity of the limiting groove, and the connecting plate 65 is fixedly sleeved on the outside of the locking plate 64.

[0044] More specifically, the locking components also include a threaded post 67 and a locking ring 66. The threaded post 67 is convenient for connecting with the connecting plate 65, and the locking ring 66 is convenient for limiting the relative position of the threaded post 67 and the connecting plate 65, preventing the connecting plate 65 from sliding arbitrarily. One end of the threaded post 67 is fixedly connected to the bearing frame 61, and the outer wall of the threaded post 67 is slidably inserted into the connecting plate 65. The locking ring 66 is threadedly sleeved on the outside of the threaded post 67. Example

[0045] Based on Embodiment 1, the positioning component includes a bearing seat 68 and a positioning post 69. The bearing seat 68 facilitates the rotation of the positioning post 69 on it, and the positioning post 69 helps to limit the relative position of the bearing seat 68 and the first plate 62, making it easier to adjust the length of the first plate 62 extending from the inside of the bearing frame 61, and further facilitating the adjustment of the distance between the protective platform 2 and the inverted arch 1. It has wide adaptability. The bearing seat 68 is fixedly connected to the bottom of the bearing frame 61, and the positioning post 69 is threadedly inserted into the inside of the bearing seat 68. The positioning post 69 is slidably inserted into the inner cavity of the positioning hole.

[0046] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A protective device for blasting excavation of cross-chambers, characterized in that, include: An inverted arch (1) is provided above the inverted arch (1), and a protective platform (2) is provided on the top of the protective platform (2), with a wind duct (4) and a machine body (5). Pad (3), which is fixedly connected to the top of the inverted arch (1); An adjustment mechanism (6) is located between the pad (3) and the protective platform (2). The adjustment mechanism (6) is used to adjust the distance between the protective platform (2) and the invert (1). The adjustment mechanism (6) includes: The support frame (61) is located below the protective platform (2); The first plate (62) is fixedly connected to the top of the pad (3), and a positioning hole is provided on the side of the first plate (62). The second plate (63) is fixedly connected to the bottom of the protective platform (2), and the second plate (63) and the first plate (62) are slidably inserted into the interior of the support frame (61); A locking element is located on the support frame (61) and is used to lock the relative position of the second plate (63) and the support frame (61); A positioning element is located at the bottom of the support frame (61) and is used to lock the relative position of the first plate (62) and the support frame (61); Guide seat (610), the guide seat (610) is fixedly connected to the side of the support frame (61); Guide frame (611) is fixedly connected to the side of the second plate (63), and the guide frame (611) is slidably inserted into the inner cavity of the guide seat (610).

2. The protective device for blasting excavation of cross-chambers according to claim 1, characterized in that, The locking element includes: Locking plate (64), which is slidably inserted into the side of the support frame (61); The limiting groove is equidistantly opened on the side of the second plate (63), and the locking plate (64) is slidably inserted into the inner cavity of the limiting groove. A connecting plate (65) is fixedly sleeved on the outside of a locking plate (64).

3. The protective device for blasting excavation of cross-chambers according to claim 2, characterized in that, The locking component also includes: A threaded column (67) is fixedly connected at one end to a bearing frame (61), and the outer wall of the threaded column (67) is slidably inserted into a connecting plate (65). Locking ring (66), which is threaded onto the outside of threaded post (67).

4. The protective device for blasting excavation of cross-chambers according to claim 1, characterized in that, The positioning element includes: The support base (68) is fixedly connected to the bottom of the support frame (61); The positioning post (69) is threadedly inserted into the interior of the bearing seat (68), and the positioning post (69) is slidably inserted into the inner cavity of the positioning hole.

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