An airborne temporary support device applicable to coal mine roadways

Abstract

The present invention relates to the technical field of roadway support, and particularly to an airborne temporary support device applicable to coal mine roadways. The present invention can not only perform two-side elongation support, but also perform single-side support; when the support frame needs to be unfolded on one side, the driving device drives the driving block into the hollow structure of the ejection block, so that the protrusion rotates and then collides with the rack located on its lower (or upper) side, causing the first latch to engage with the second latch located on the first fixing plate. The rack is restricted by the second latch and cannot move left and right, and finally the rack disengaged from the gear engagement remains stationary; then the driving device drives the driving block into the hollow structure of the gear, driving the gear to rotate. At this time, the rack engaged with the gear moves, and the round rod thereon pushes the support plate to move and unfold to one side; through the collision, the rack is disengaged from the gear engagement, so that the support frame of the support device can adjust the unfolding area according to actual needs after unfolding, and the applicability is effectively enhanced.

Description

Technical Field

[0001] The present invention relates to the technical field of roadway support, and particularly to an airborne temporary support device applicable to coal mine roadways. Background Art

[0002] In modern coal mine operations, the basic purpose of roadway support is to relieve and reduce the movement of surrounding rocks, prevent the roadway section from being overly reduced, and prevent the caving of the separated and damaged surrounding rocks. However, the effect of roadway support not only depends on the supporting force of the support itself, but is also affected by a series of factors such as the properties of the surrounding rocks, the mechanical properties of the support (supporting force and compressibility), the installation density of the support, the timing of support installation, the quality of support installation, and the contact mode with the surrounding rocks (point contact or surface contact).

[0003] After the support frame of the existing support device is unfolded, its size is fixed and cannot be adjusted according to actual needs, resulting in poor applicability. In coal mine support operations, wooden boards are often placed at the upper end of the support frame to support the iron net. However, the wooden boards of the existing device cannot be effectively fixed on the support frame, are prone to local displacement, affect subsequent operations, and are inefficient, thus affecting the tunneling efficiency.

[0004] Therefore, improvements are made to address the above problems. Summary of the Invention

[0005] Therefore, the present invention is made in view of the above problems. Through the design of a telescopic rod to move the support plate, the present invention solves the problems of poor applicability of the existing device, easy local displacement of the wooden board, affecting subsequent operations, low efficiency, and affecting tunneling efficiency. The present invention achieves the above object through the following technical solutions:

[0006] An airborne temporary support device applicable to coal mine roadways, comprising a fixed support. The left and right sides of the top of the fixed support are fixedly connected to a support plate through telescopic rods. A moving device is arranged inside the support plate. A clamping device is arranged between the upper and lower sides of the moving device and the fixed support. The fixed support is composed of two upper and lower support columns connected by vertical connecting rods. The clamping device includes a first fixing plate, and there are two first fixing plates respectively fixedly connected to the upper and lower support columns. The inner side of the first fixing plate is slidably connected to the moving device through an elastic telescopic rod. Two clamping blocks II are arranged diagonally inside the two first fixing plates. The moving device includes a round rod, a rack, and a clamping block I. The lower sides inside the two support plates are respectively fixedly connected to the upper and lower racks through the round rod. Clamping blocks I are arranged on the outer sides of the two racks. A positioning device is meshed and connected inside the two racks. The positioning device includes a driving rod, a driving block, a gear, an ejecting block, and a protrusion. The inner sides of the two racks are meshed and connected to the gear. A driving rod is arranged inside the gear. A driving block is arranged on the driving rod. An ejecting block is arranged on the front side of the driving block. The front end of the driving rod penetrates through the ejecting block and is rotatably connected to the fixed support through a clamping device. A protrusion is arranged on the ejecting block close to the inner side of the rack.

[0007] Preferably, the clamping block I matches the clamping block II.

[0008] Preferably, a sliding plate is arranged on one side of each of the two racks. The sliding plate is slidably connected to the inner end of the elastic telescopic rod.

[0009] Preferably, tooth rings matching the driving block are arranged inside both the gear and the ejecting block.

[0010] Preferably, the clamping device includes a connecting plate, a moving plate, a moving telescopic rod, and a second fixing plate. The second fixing plate is fixedly connected to the upper support column. The second fixing plate is fixedly connected to the moving plate through the moving telescopic rod. The lower side of the moving plate is rotatably connected to the driving rod through the connecting plate.

[0011] Preferably, the driving rod is driven by a driving device.

[0012] Preferably, the elastic telescopic rod is always in a compressed state.

[0013] Preferably, the gear is rotatably arranged on the fixed support through a reinforcing plate.

[0014] Preferably, a damper is arranged between the ejecting block and the driving rod.

[0015] Beneficial effects

[0016] 1. The present invention can not only perform elongation support on both sides, but also perform single-side support; when the support frame needs to be unfolded on one side, the driving device drives the driving block into the hollow structure of the ejection block, drives the ejection block to rotate, and the protrusion provided on the ejection block collides with the rack located on its lower (or upper) side, causing it to move away from the gear against the elastic force of the elastic telescopic rod. At this time, the first clamping block on the back side of the rack will also move away from the gear and engage with the second clamping block located on the first fixing plate. The rack is restricted by the second clamping block and cannot move left and right. Finally, the rack disengaged from the gear engagement remains stationary. Then, the driving device drives the driving block into the hollow structure of the gear, drives the gear to rotate. At this time, the rack engaged with the gear moves, and the round rod thereon pushes the support plate to move and unfold to one side; through the collision, the rack disengages from the gear engagement, enabling the support frame of the support device to adjust the unfolding area according to actual needs after unfolding, effectively enhancing the applicability;

[0017] 2. After the driving device of the present invention drives the driving block into the hollow structure of the ejection block to drive the ejection block to move and then disengages, the ejection block moves away from the second fixing plate against the moving telescopic rod, causing the moving plate indirectly connected to the ejection block to move away from the second fixing plate. At this time, the wooden board is placed between the moving plate and the second fixing plate. The driving block disengages from the hollow structure of the ejection block and is clamped by the moving plate and the second fixing plate under the drive of the moving telescopic rod, thus being fixed, avoiding the problem that the wooden board of the existing device often cannot be effectively fixed on the support frame, is prone to local deviation, affects the subsequent operation, has low efficiency, and affects the tunneling efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram of the whole of the present invention.

[0019] Figure 2 is a schematic structural diagram of the present invention in the unfolded state of the support plate.

[0020] Figure 3 is a schematic structural diagram of the fixing bracket of the present invention.

[0021] Figure 4 is a schematic structure of the main device of the present invention Figure 1 .

[0022] Figure 5 is a schematic structure of the main device of the present invention Figure 2 .

[0023] Figure 6 is a schematic structure of the positioning device of the present invention Figure 1 .

[0024] Figure 7 is a schematic structure of the positioning device of the present invention Figure 2 .

[0025] Figure 8 This is a schematic structural view of the rack of the present invention in the lifted state.

[0026] Figure 9 This is a schematic structural view of the clamping device of the present invention.

[0027] As Figure 1-9 shown: 1. Fixed bracket; 11. Support column; 2. Telescopic rod; 3. Support plate; 4. Moving device; 41. Round rod; 42. Rack; 43. First clamping block; 44. Slide plate; 5. Positioning device; 51. Driving rod; 52. Driving block; 53. Gear; 54. Ejecting block; 55. Protrusion; 6. Engaging device; 61. First fixing plate; 62. Second clamping block; 63. Elastic telescopic rod; 7. Driving device; 8. Clamping device; 81. Connecting plate; 82. Moving plate; 83. Moving telescopic rod; 84. Second fixing plate. Detailed implementation mode

[0028] The preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, so that those of ordinary skill in the art in the prior art of the field to which the invention belongs can easily implement these embodiments. However, the present invention can also be implemented in various different forms, so the present invention is not limited to the embodiments described below. In addition, in order to more clearly describe the present invention, components not connected to the present invention will be omitted from the drawings.

[0029] As Figure 1-2 shown, an airborne temporary support device applicable to coal mine roadways includes: a fixed bracket 1, a telescopic rod 2, a support plate 3, a moving device 4, a positioning device 5, an engaging device 6, a driving device 7, and a clamping device 8;

[0030] The number of the support plates 3 is two, and each is arranged on both sides of the fixed bracket 1 through two telescopic rods 2;

[0031] The positioning device 5 is movably and rotatably arranged at the lower end of the fixed bracket 1 through a connecting column body, and can rotate and move forward and backward under the drive of the driving device 7;

[0032] The number of the engaging devices 6 is two and is fixedly arranged at the inner end of the fixed bracket 1;

[0033] The number of the moving devices 4 is two and is movably arranged on the inner side of the engaging device 6;

[0034] The driving device 7 is arranged at the inner end of the fixed bracket 1;

[0035] The clamping device 8 is arranged at the top end of the fixed bracket 1;

[0036] As Figure 3As shown, the fixed bracket 1 is formed by connecting two support columns 11 through a vertical connecting rod;

[0037] As Figure 4-5 shown, the moving device 4 includes a round rod 41, a rack 42, a first clamping block 43, and a sliding plate 44;

[0038] The two round rods 41 connect the rack 42 and the support plate 3 respectively; that is, the lower sides of the inner sides of the two support plates 3 are fixedly connected to the upper and lower racks 42 respectively through the round rods 41;

[0039] A plurality of the first clamping blocks 43 are arranged at equal intervals on the outer side of the rack 42;

[0040] The sliding plate 44 is arranged beside the rack 42;

[0041] As Figure 4-5 shown, the engaging device 6 includes: a first fixing plate 61, a second clamping block 62, and an elastic telescopic rod 63;

[0042] The number of the first fixing plates 61 is two, which are respectively arranged on the two support columns 11;

[0043] The number of the second clamping blocks 62 is two, which are respectively arranged on one side of each first fixing plate 61 close to the moving device 4. The second clamping blocks 62 are the same size as the first clamping blocks 43 and face in the opposite direction and can engage with each other on the same vertical plane;

[0044] The number of the elastic telescopic rods 63 is two, and the two ends are respectively connected to the first fixing plate 61 and the sliding plate 44. Among them, it is fixedly connected to the first fixing plate 61 and is slidably connected to the sliding plate 44, that is, the sliding plate 44 can move left and right relative to the elastic telescopic rod 63; the elastic telescopic rod 63 is always in a compressed state during the specific implementation process, which makes the sliding plate 44 and the rack 42 always receive the driving force of the elastic telescopic rod 63 towards the middle direction of the two racks 42;

[0045] As Figure 6-7 shown, the positioning device 5 includes: a driving rod 51, a driving block 52, a gear 53, an ejecting block 54, and a protrusion 55;

[0046] The driving rod 51 can move back and forth and rotate under the drive of the driving device 7;

[0047] The driving block 52 is arranged on the driving rod 51 and can move back and forth and rotate with the driving rod 51. The driving block 52 is provided with an annular protrusion;

[0048] The gear 53 is rotatably arranged on the fixed bracket 1 through a reinforcing plate;

[0049] The ejecting block 54 is rotatably and also movably arranged on the fixed bracket 1 through a connecting plate 81;

[0050] The driving rod 51 is arranged through the gear 53 and the ejection block 54. During specific implementation, the rotation and movement of the driving rod 51 cannot drive the rotation and movement of the gear 53 and the ejection block 54. A hollow structure is arranged on one side of the gear 53 and the ejection block 54 close to the driving block 52, and protrusions are arranged on the hollow structure;

[0051] During specific implementation, the driving block 52 can enter the hollow structure and engage with the protrusions inside the hollow structure, which enables the gear 53 and the ejection block 54 to keep consistent with the rotation state of the driving block 52 when the driving block 52 is engaged in the hollow structure of the gear 53 and the ejection block 54;

[0052] A damper is arranged between the ejection block 54 and the driving rod 51. During specific implementation, the rotational resistance is large and it is not easy to rotate, and it can only rotate under the drive of the driving block 52;

[0053] The gear 53 can engage with the two racks 42 and drive them to move left and right;

[0054] The protrusion 55 is arranged on the ejection block 54, and the front end of the protrusion 55 is located between the two racks 42;

[0055] During specific implementation, when the support frame needs to be unfolded on both sides, the driving device 7 drives the driving block 52 into the hollow structure of the gear 53, drives the gear 53 to rotate, and the two racks 42 engaged with the gear 53 move to both sides; the round rod 41 on the rack 42 then pushes the support plate 3 to move and unfold to both sides;

[0056] When the support frame needs to be unfolded on one side, the driving device 7 drives the driving block 52 into the hollow structure of the ejection block 54, drives the ejection block 54 to rotate, and the protrusion 55 arranged on the ejection block 54 then collides with the racks 42 on its upper and lower sides to make them move away from the gear 53 against the elastic force of the elastic telescopic rod 63. After that, due to the large rotational resistance of the ejection block 54 during specific implementation and it is not easy to rotate, the elastic force of the elastic telescopic rod 63 cannot make the rack 42 reset and engage with the gear 53 either. Therefore, the rack 42 disengaged from the gear 53 remains stationary;

[0057] At this time, the first clamping block 43 on the other side of the rack 42 will also move away from the gear 53 and engage with the second clamping block 62 on the fixing plate 61. The rack 42 is limited by the second clamping block 62 and cannot move left and right and remains stationary as Figure 8 ;

[0058] After that, the driving device 7 drives the driving block 52 into the hollow structure of the gear 53, driving the gear 53 to rotate. At this time, the rack 42 engaged with the gear 53 moves, and the round rod 41 thereon pushes the support plate 3 to move and expand to one side. The collision of the protrusion 55 causes the rack 42 to disengage from the engagement with the gear 53, enabling the support frame of the support device to adjust the expansion area according to actual needs after expansion, effectively enhancing the applicability;

[0059] As Figure 8 shown, the clamping device 8 includes: a connecting plate 81, a moving plate 82, a moving telescopic rod 83, and a second fixing plate 84;

[0060] The connecting plate 81 is closely attached to the ejection block 54;

[0061] The moving plate 82 is connected to the connecting plate 81 and is movably arranged on the fixed bracket 1;

[0062] Both ends of the moving telescopic rod 83 are connected to the moving plate 82 and the second fixing plate 84, and are always in a stretched state;

[0063] The second fixing plate 84 is arranged on the fixed bracket 1;

[0064] The driving device 7 drives the driving block 52 into the hollow structure of the ejection block 54, driving the ejection block 54 to move away from the second fixing plate 84 against the moving telescopic rod 83, causing the moving plate 82 indirectly connected to the ejection block 54 to move away from the second fixing plate 84;

[0065] At this time, the wooden board is placed between the moving plate 82 and the second fixing plate 84. The driving block 52 disengages from the hollow structure of the ejection block 54. Driven by the moving telescopic rod 83, the wooden board is clamped by the moving plate 82 and the second fixing plate 84 and fixed, avoiding the problems that the wooden board of the existing device often cannot be effectively fixed on the support frame, is prone to local deviation, affects the subsequent operation, has low efficiency, and affects the tunneling efficiency.

[0066] The working principle of the present invention:

[0067] In the specific implementation process, when the support frame needs to be unfolded on both sides, the driving device 7 drives the driving block 52 into the hollow structure of the gear 53, driving the gear 53 to rotate, and the two racks 42 engaged with the gear 53 move to both sides; the round rod 41 on the rack 42 then pushes the support plate 3 to move and unfold to both sides; when the support frame needs to be unfolded on one side, the driving device 7 drives the driving block 52 into the hollow structure of the ejection block 54, driving the ejection block 54 to rotate, and the protrusion 55 provided on the ejection block 54 then collides with the rack 42 located below (or above) it, causing it to move away from the gear 53 against the elastic force of the elastic telescopic rod 63. At this time, the first catch 43 on the back of the rack 42 will also move away from the gear 53 and engage with the second catch 62 located on the first fixing plate 61. The rack 42 is restricted by the second catch 62 and cannot move left and right. Finally, the rack 42 disengaged from the gear 53 remains stationary as Figure 8 ; then the driving device 7 drives the driving block 52 into the hollow structure of the gear 53, driving the gear 53 to rotate. At this time, the rack 42 engaged with the gear 53 moves, and the round rod 41 on it then pushes the support plate 3 to move and unfold to one side;

[0068] The driving device 7 drives the driving block 52 into the hollow structure of the ejection block 54, driving the ejection block 54 to move away from the second fixing plate 84 against the moving telescopic rod 83, causing the moving plate 82 indirectly connected to the ejection block 54 to move away from the second fixing plate 84; at this time, a wooden board is placed between the moving plate 82 and the second fixing plate 84, and the driving block 52 disengages from the hollow structure of the ejection block 54. Driven by the moving telescopic rod 83, the wooden board is clamped by the moving plate 82 and the second fixing plate 84 and thus fixed.

Claims

1. An airborne temporary support device applicable to coal mine roadways, comprising a fixed support (1), characterized in that: The top of the fixed bracket (1) is fixedly connected to the support plate (3) through telescopic rods (2) on the left and right sides; a moving device (4) is arranged inside the support plate (3); a clamping device (6) is arranged between the upper and lower sides of the moving device (4) and the fixed bracket (1); the fixed bracket (1) is composed of two upper and lower support columns (11) through vertical connecting rods; the clamping device (6) includes a first fixing plate (61), and there are two first fixing plates (61), which are respectively fixedly connected to the upper and lower support columns (11); the inside of the first fixing plate (61) is slidably connected to the moving device (4) through an elastic telescopic rod (63); a second clamping block (62) is arranged diagonally inside the two first fixing plates (61); the moving device (4) includes a round rod (41), a rack (42), and a first clamping block (43); the lower sides inside the two support plates (3) are respectively fixedly connected to the upper and lower racks (42) through the round rod (41); a first clamping block (43) is arranged on the outer sides of the two racks (42); a positioning device (5) is meshed and connected inside the two racks (42); the positioning device (5) includes a driving rod (51), a driving block (52), a gear (53), an ejection block (54), and a protrusion (55); the inner sides of the two racks (42) are meshed and connected to the gear (53); a driving rod (51) is arranged inside the gear (53); a driving block (52) is arranged on the driving rod (51); an ejection block (54) is arranged on the front side of the driving block (52), and the front end of the driving rod (51) penetrates through the ejection block (54) and is rotatably connected to the fixed bracket (1) through a clamping device (8); a protrusion (55) is arranged on the ejection block (54) close to the inner side of the rack (42).

2. The airborne temporary support device applicable to coal mine roadways according to claim 1, wherein: The first clamping block (43) is matched with the second clamping block (62).

3. An airborne temporary support device applicable to coal mine roadways according to claim 1, characterized in that: Sliding plates (44) are arranged on one side of the two racks (42); the sliding plates (44) are slidably connected to the inner ends of the elastic telescopic rods (63).

4. An airborne temporary support device applicable to coal mine roadways according to claim 1, characterized in that: Toothed rings matching the driving block (52) are arranged inside both the gear (53) and the ejection block (54).

5. An airborne temporary support device applicable to coal mine roadways according to claim 1, characterized in that: The clamping device (8) includes a connecting plate (81), a moving plate (82), a moving telescopic rod (83), and a second fixing plate (84); the second fixing plate (84) is fixedly connected to the support column (11) arranged above; the second fixing plate (84) is fixedly connected to the moving plate (82) through the moving telescopic rod (83); the lower side of the moving plate (82) is rotatably connected to the driving rod (51) through the connecting plate (81).

6. The airborne temporary support device applicable to coal mine roadways according to claim 1, wherein: The driving rod (51) is driven by a driving device (7).

7. An airborne temporary support device applicable to coal mine roadways according to claim 1, characterized in that: The elastic telescopic rod (63) is always in a compressed state.

8. An airborne temporary support device applicable to coal mine roadways according to claim 1, characterized in that: The gear (53) is rotatably arranged on the fixed bracket (1) through a reinforcing plate.

9. An airborne temporary support device applicable to coal mine roadways according to claim 1, characterized in that: A damper is arranged between the ejection block (54) and the driving rod (51).

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