Telescopic joist device

Abstract

The utility model relates to the field of coal mine equipment, in particular to a telescopic joist device which comprises a first supporting block, a first electric telescopic shaft and a second supporting block, the first supporting block is horizontally placed, sliding grooves are formed in the left end and the right end of the first supporting block, a containing groove is formed in the groove bottom of each sliding groove, and the first electric telescopic shaft is horizontally and fixedly installed in the containing grooves; the number of the second supporting blocks is two, the two second supporting blocks are installed in the sliding grooves in a sliding mode, the second supporting blocks are fixedly connected with the output ends of the first electric telescopic shafts, the ends, away from the first supporting blocks, of the second supporting blocks are fixedly connected with the target hydraulic supporting column, and a plurality of compression springs are fixedly installed at the top ends of the second supporting blocks. A supporting plate is fixedly installed at the top ends of the at least two compression springs jointly, a containing groove is formed in the top end of the second supporting block, an auxiliary plate is placed in the containing groove, one end of the auxiliary plate is rotationally connected with the second supporting block, and the other end of the auxiliary plate abuts against the bottom end of the supporting plate. The supporting beam has the effect of improving the convenience of the supporting beam.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of coal mine equipment, and particularly relates to a telescopic joist device. BACKGROUND

[0002] The coal mine support device in the coal mine tunnel comprises a top beam, a joist and a hydraulic prop, the top beam is horizontally installed at the top end of the joist, the hydraulic prop is vertically installed at the bottom end of the joist, and the coal mine support device is used for supporting the coal mine tunnel, so that the staff has a safe working environment.

[0003] However, the existing joist is a rectangular steel, which is inconvenient to use when encountering coal mine tunnels of different widths. CONTENT OF THE INVENTION

[0004] In order to improve the convenience of the joist, the present application provides a telescopic joist device.

[0005] The telescopic joist device provided by the present application adopts the following technical scheme:

[0006] The telescopic joist device comprises a first support block, a first electric telescopic shaft and a second support block, the first support block is horizontally placed, and a sliding groove is formed at the left and right ends of the first support block, a receiving groove is formed at the bottom of each sliding groove, the first electric telescopic shaft is horizontally fixedly installed in the receiving groove, the second support block is provided with two, the second support blocks are slidingly installed in the sliding grooves, the second support block is fixedly connected with the output end of the first electric telescopic shaft, one end of the second support block, away from the first support block, is fixedly connected with a target hydraulic prop, a plurality of compression springs are fixedly installed at the top end of the second support block, at least two top ends of the compression springs are jointly fixedly installed with a support plate, a placing groove is formed at the top end of the second support block, an auxiliary plate is placed in the placing groove, one end of the auxiliary plate is rotatably connected with the second support block, and the other end is abutted against the bottom end of the support plate.

[0007] Optionally, two right-angle supports are slidingly installed at the bottom end of the first support block, the right-angle supports are placed in a staggered manner, and the vertical end of the right-angle support is fixedly connected with the target hydraulic prop.

[0008] Optionally, an auxiliary groove is formed at the vertical end of the right-angle support, a second electric telescopic shaft is horizontally installed in the auxiliary groove, a support inclined plate is installed on the right-angle support, one end of the support inclined plate is rotatably connected with the horizontal end of the right-angle support, and the other end is abutted against the second electric telescopic shaft.

[0009] Optionally, one end of the support inclined plate, close to the horizontal end of the right-angle support, is located at the center position of the horizontal end of the right-angle support.

[0010] Optionally, the pressure sensing module, the control module and the alarm module are further included, the pressure sensing module is provided with a plurality of pressure sensing modules, the plurality of pressure sensing modules are uniformly distributed on the top end of the first supporting block and the top end of the supporting plate, and the control module is in signal connection with the pressure sensing module and the alarm module respectively.

[0011] Optionally, the mounting groove is arranged at one end of the vertical end of the right-angle support, and the third electric telescopic shaft is fixedly installed in the mounting groove and in signal connection with the control module.

[0012] Optionally, the alarm module is an audible and visual alarm.

[0013] In summary, the present application has at least one of the following beneficial technical effects:

[0014] 1. By slidingly connecting the first supporting block and the second supporting block, when encountering coal mine tunnels of different widths, the first electric telescopic shaft can drive the second supporting block to slide into or out of the sliding groove in the first supporting block, so as to adapt to the width of the coal mine tunnel, thereby improving the convenience of the joist.

[0015] 2. By arranging the compression spring and the auxiliary plate, the top end of the supporting plate on the second supporting block can be flush with the top end of the first supporting block, so as to facilitate the installation of the top beam.

[0016] 3. By arranging the pressure sensing module, the control module and the alarm module, when encountering coal mine tunnel collapse, early warning can be performed to make the staff withdraw from the coal mine tunnel. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a structural schematic diagram of a telescopic joist device according to an embodiment of the present application.

[0018] Figure 2 is a partial sectional view of a telescopic joist device according to an embodiment of the present application.

[0019] Figure 3 is a schematic diagram of the third electric telescopic shaft sliding out of the mounting groove of a telescopic joist device according to an embodiment of the present application.

[0020] Figure 4 is a schematic diagram of a right-angle support of a telescopic joist device according to an embodiment of the present application.

[0021] Figure 5 is a system diagram of a telescopic joist device according to an embodiment of the present application.

[0022] Explanation of reference signs: 1, first support block; 11, sliding groove; 12, containing groove; 13, T-shaped groove; 2, first electric telescopic shaft; 3, second support block; 31, compression spring; 32, placing groove; 33, auxiliary plate; 34, support plate; 4, pressure sensing module; 5, control module; 6, alarm module; 7, right-angle support; 71, auxiliary groove; 72, second electric telescopic shaft; 73, T-shaped block; 8, support inclined plate; 81, mounting groove; 82, third electric telescopic shaft. DETAILED DESCRIPTION

[0023] The following will be described in detail with reference to the accompanying drawings. Figures 1-5 The application is further described in detail.

[0024] The embodiment of the application discloses a telescopic joist device.

[0025] Referring to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 , a telescopic joist device comprises a first support block 1, a first electric telescopic shaft 2, a second support block 3, a pressure sensing module 4, a control module 5 and an alarm module 6.

[0026] The first support block 1 is horizontally placed, and the left and right ends of the first support block 1 are each provided with a sliding groove 11, the groove bottom of each sliding groove 11 is provided with a containing groove 12, two first electric telescopic shafts 2 are provided, and the two first electric telescopic shafts 2 are respectively fixedly installed in the containing grooves 12; the second support block 3 is slidingly installed in the sliding groove 11, the second support block 3 is fixedly connected with the output end of the first electric telescopic shaft 2, and the end, away from the first support block 1, of the second support block 3 is fixedly connected with a target hydraulic prop; the control module 5 is signal-connected with the first electric telescopic shaft 2, and the control module 5 is used for controlling the first electric telescopic shaft 2 to drive the second support block 3 to slide into and out of the sliding groove 11. It should be known that the control module 5 is preferably a controller.

[0027] The top end of the second support block 3 is fixedly installed with a plurality of compression springs 31, the top ends of the four compression springs 31 are jointly fixedly installed with a support plate 34, the top end of the second support block 3 is provided with a placing groove 32, the placing groove 32 is placed with an auxiliary plate 33, one end of the auxiliary plate 33 is rotationally connected with the second support block 3, and the other end is abutted with the bottom end of the support plate 34.

[0028] When the first electric telescopic shaft 2 drives the second supporting block 3 to slide out of the sliding groove 11, the compression spring 31 is reset, driving the supporting plate 34 to move upwards until the top end of the supporting plate 34 is flush with the top end of the first supporting block 1, and then the auxiliary plate 33 is rotated to support the supporting plate 34. It should be noted that the top end of the supporting plate 34 is flush with the top end of the first supporting block 1, which facilitates the installation of the top beam (not shown). It should also be noted that the supporting plate 34 is provided with a plurality of supporting plates 34, which can be driven upwards one by one by the compression spring 31 as the second supporting block 3 slowly slides out of the sliding groove 11, without affecting each other.

[0029] The bottom end of the first supporting block 1 is horizontally parallel to two T-shaped grooves 13, and one T-shaped block 73 is slidably installed in each T-shaped groove 13. The bottom end of each T-shaped block 73 is fixed with a right-angle bracket 7, and the vertical end of the right-angle bracket 7 is fixedly connected with the target hydraulic prop. It should be noted that the two right-angle brackets 7 are placed in a staggered manner and can support the first supporting block 1.

[0030] The vertical end of each of the two right-angle brackets 7 is provided with an auxiliary groove 71, and a second electric telescopic shaft 72 is horizontally fixedly installed in the auxiliary groove 71. The second electric telescopic shaft 72 is signal connected with the control module 5, and the control module 5 is used to control the output end of the second electric telescopic shaft 72 to slide into or out of the auxiliary groove 71. A supporting inclined plate 8 is installed on the right-angle bracket 7, one end of the supporting inclined plate 8 is rotatably connected with the horizontal end of the right-angle bracket 7, and the other end is arranged on the upper end of the second electric telescopic shaft 72. The supporting inclined plate 8 can support the right-angle bracket 7. It should be noted that the end of the supporting inclined plate 8 close to the horizontal end of the right-angle bracket 7 is located at the center of the horizontal end of the right-angle bracket 7.

[0031] The pressure sensing module 4 is provided with a plurality of pressure sensing modules 4, which are evenly distributed and installed on the top end of the first supporting block 1 and the top end of the supporting plate 34. The control module 5 is signal connected with the pressure sensing module 4 and the alarm module 6. It should be noted that the pressure sensing module 4 is preferably a pressure sensor, and the alarm module 6 is preferably an audible and visual alarm.

[0032] When the coal mine tunnel has ore falling from the top end to the first supporting block 1 or the supporting plate 34, the pressure sensing module 4 outputs a pressure detection signal, the control module 5 receives the pressure detection signal, and outputs a control signal when the value reflected by the pressure detection signal reaches a preset value. The alarm module 6 receives the control signal and alarms, which can inform the staff to evacuate the coal mine tunnel. It should be noted that the preset value is set according to the actual situation, i.e. the bearing capacity of the first supporting block 1 and the second supporting block 3. It should also be noted that the pressure sensing module 4 located in the sliding groove 11 does not work.

[0033] The support inclined plate 8 is provided with a mounting groove 81 at one end close to the vertical end of the right-angle support 7, and a third electric telescopic shaft 82 is fixedly installed in the mounting groove 81 and is in signal connection with the control module 5. When the second electric telescopic shaft 72 receives the control signal, the output end of the second electric telescopic shaft 72 slides into the auxiliary groove 71, and without the limiting action of the output end of the second electric telescopic shaft 72, the support inclined plate 8 is in a vertical state under the action of its own gravity, the output end of the third electric telescopic shaft 82 slides out of the mounting groove 81 until abuts against the ground, thereby further providing support for the first support block 1 and the second support block 3, and further providing the withdrawal time for the staff to withdraw from the coal mine tunnel.

[0034] It should be known that the motors in the first electric telescopic shaft 2, the second electric telescopic shaft 72 and the third electric telescopic shaft 82 are all explosion-proof motors.

[0035] The implementation principle of the embodiment of the application is that the staff controls the first electric telescopic shaft 2 to drive the second support block 3 to slide out of the slide groove 11 by a length according to the width of the coal mine tunnel through the control module 5, and then rotates the auxiliary plate 33 on the second support block 3, so that the top end of the auxiliary plate 33 supporting the support plate 34 is flush with the top end of the first support block 1.

[0036] The above are all preferred embodiments of the application, and do not limit the protection scope of the application, so that: all equivalent changes made according to the structure, shape, principle of the application should be covered in the protection scope of the application.

Claims

1. A telescoping joist device, characterized by: The utility model provides a hydraulic support supporting device, including first support block (1), first electric telescopic shaft (2) and second support block (3), first support block (1) horizontal placement, and the both ends of left and right are all seted up with sliding slot (11), the slot bottom of every sliding slot (11) is seted up with accommodating groove (12), first electric telescopic shaft (2) horizontal fixed mounting is in accommodating groove (12), second support block (3) is provided with two, two second support block (3) sliding installation is in sliding slot (11), second support block (3) with the output of first electric telescopic shaft (2) fixed connection, second support block (3) is fixedly connected with target hydraulic prop at the end away from first support block (1), a plurality of compression springs (31) are fixedly installed on the top of second support block (3), the top of at least two compression springs (31) is jointly fixedly installed with a support plate (34), the top of second support block (3) is seted up with the placement groove (32), the placement groove (32) is placed with auxiliary board (33), one end of auxiliary board (33) is rotatably connected with second support block (3), and the other end is abutted with the bottom end of support plate (34).

2. A retractable joist device according to claim 1, wherein: The bottom end of the first support block (1) is slidingly installed with two right angle supports (7), the two right angle supports (7) are placed in a staggered manner, and the vertical end of the right angle support (7) is fixedly connected with the target hydraulic prop.

3. A retractable joist device according to claim 2, wherein: The vertical end of the right angle support (7) is provided with an auxiliary groove (71), and the second electric telescopic shaft (72) is horizontally installed in the auxiliary groove (71). A support inclined plate (8) is installed on the right angle support (7), one end of the support inclined plate (8) is rotatably connected with the horizontal end of the right angle support (7), and the other end is abutted with the second electric telescopic shaft (72).

4. A telescoping joist assembly according to claim 3, wherein: The end of the support inclined plate (8) close to the horizontal end of the right angle support (7) is located at the center position of the horizontal end of the right angle support (7).

5. A telescoping joist assembly according to claim 3, wherein: It also includes a pressure sensing module (4), a control module (5) and an alarm module (6), the pressure sensing module (4) is provided with a plurality of, a plurality of pressure sensing modules (4) are evenly distributed on the top of the first support block (1) and the top of the support plate (34), the control module (5) is signal connected with the pressure sensing module (4) and the alarm module (6) respectively.

6. A telescoping joist assembly according to claim 5, wherein: The end of the support inclined plate (8) close to the vertical end of the right angle support (7) is provided with a mounting groove (81), and the third electric telescopic shaft (82) is fixedly installed in the mounting groove (81). The third electric telescopic shaft (82) is signal connected with the control module (5).

7. A telescoping joist assembly according to claim 5 wherein: The alarm module (6) is an audible and visual alarm.

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