A support frame

Abstract

The utility model relates to the field of coal mining, especially support frame, including first support frame, second support frame, third support frame and support net mechanism, first support frame is set up before and after, second support frame is slidably connected through first telescopic mechanism the front side of first support frame, third support frame is slidably connected through second telescopic mechanism the front side of second support frame. Through second pay -off assembly, support net is put out, make support net cover in the top of first support frame, second support frame and third support frame, become from line support face support, make support force evenly spread to the surface of surrounding rock, improve the support effect, and intercept the local drop piece, improve the work environment safety, use after completing, in the process that support net is reeled into second placing groove by second pay -off assembly, the broken piece intercepted on support net falls to the back side of first support frame, through the scraper, the broken piece residual on support net surface is spaded and falls, avoid the exposed soot.

Description

Technical Field

[0001] This utility model relates to the field of coal mining, and in particular to a support frame. Background Technology

[0002] Support frames used in coal mining are core equipment for ensuring underground operation safety and controlling roof collapse. They are used to transfer the weight of the overlying rock strata to the support itself, preventing roof collapse and providing a safe passage for coal mining machines, conveyors, and personnel.

[0003] According to the patent document with publication number CN119244292A, the patent document describes a method where a first hydraulic cylinder supports one side of the mining roadway, and a motor drives a telescopic rod to rotate, which in turn drives the support plate to rotate, so that the support plate abuts against the mining roadway. A second hydraulic cylinder supports one side of the mining roadway, and a first limiting plate abuts against the bottom of the support plate. When the coal mining face moves forward, a first multi-stage electric telescopic rod drives a third hydraulic cylinder to move forward, and the third hydraulic cylinder supports one side of the mining roadway. The above operation is repeated to provide advance support for the mining roadway.

[0004] In the process of supporting the mining roadway, the patent document shows that the first hydraulic cylinder, the second hydraulic cylinder, and the support plate are supported by line support and lack surface support. The support force cannot be evenly distributed to the surrounding rock surface, which reduces the support effect. In addition, there are gaps between each set of support frames, which cannot intercept local rockfalls and are prone to sudden collapse of roof rock in a small area, posing a safety hazard. Utility Model Content

[0005] The purpose of this utility model is to provide a support frame in order to solve the above-mentioned problems.

[0006] This utility model achieves the above objectives through the following technical solutions:

[0007] A support frame includes a first support frame, a second support frame, a third support frame, and a support mesh mechanism.

[0008] The first support frame is set at the front and rear. The second support frame is slidably connected to the front side of the first support frame through the first telescopic mechanism. The third support frame is slidably connected to the front side of the second support frame through the second telescopic mechanism. The first support frame, the second support frame and the third support frame are moved up and down and supported by three drive mechanisms respectively.

[0009] The support structure includes two connecting belts and a support net. Both connecting belts and the support net are located at the top of the first support frame. The two connecting belts are fixed to the front side of the support net. A first winding and unwinding assembly is fixed to the front side of the third support frame. The two connecting belts are wound up and unwound through the first winding and unwinding assembly. A second winding and unwinding assembly is fixed to the rear side of the first support frame. The support net is wound up and unwound through the second winding and unwinding assembly.

[0010] Preferably, the support mesh mechanism also includes a scraper, which is fixed to the rear side of the first support frame, and the tip of the scraper is in contact with the support mesh.

[0011] Preferably, the first retractable assembly includes a first placement slot and a first rotating shaft. The first placement slot is located on the front side of the third support frame, and the first rotating shaft is rotatably connected within the first placement slot. A motor is fixed to the input end of the first rotating shaft.

[0012] Preferably, the second retractable assembly includes a second placement slot and a second rotating shaft. The second placement slot is located on the rear side of the first support frame, and the second rotating shaft is rotatably connected within the second placement slot. A motor is fixed to the input end of the second rotating shaft.

[0013] Preferably, the first and second guardrails are open on the front, and the third guardrail is closed in a U-shape.

[0014] Preferably, both the first telescopic mechanism and the second telescopic mechanism consist of two electrically operated telescopic rods. The two electrically operated telescopic rods of the first telescopic mechanism are fixed between the first support frame and the second support frame, and the two electrically operated telescopic rods of the second telescopic mechanism are fixed between the second support frame and the third support frame.

[0015] Preferably, the drive mechanism consists of four hydraulic cylinders, which are respectively fixed at the four corners of the bottom of the first support frame, the second support frame, and the third support frame.

[0016] The beneficial effects compared with the existing technology are as follows: The support net is released by the second retracting component, so that the support net covers the top of the first support frame, the second support frame and the third support frame, changing from line support to surface support, so that the support force is evenly distributed to the surrounding rock surface, improving the support effect, and intercepting local rockfalls, improving the safety of the working environment. After use, as the support net is rolled into the second placement slot by the second retracting component, the debris intercepted on the support net falls to the rear side of the first support frame. The remaining debris on the surface of the support net is scraped off by the scraper, avoiding exposure and dust accumulation. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of a support frame according to the present invention;

[0019] Figure 2This is a top view of a support frame described in this utility model;

[0020] Figure 3 yes Figure 2 Sectional view at point AA;

[0021] Figure 4 yes Figure 3 Sectional view at point B;

[0022] Figure 5 This is a schematic diagram of the first and second support frames of the support frame described in this utility model;

[0023] Figure 6 This is a schematic diagram of the support structure of the support frame described in this utility model.

[0024] The annotations in the attached figures are explained as follows:

[0025] 1. First support frame; 2. Second support frame; 3. Third support frame; 4. Hydraulic cylinder; 5. Electric telescopic rod; 601. First placement slot; 602. First rotating shaft; 603. Second rotating shaft; 604. Connecting belt; 605. Support net; 606. Motor; 607. Second placement slot; 7. Scraper. Detailed Implementation

[0026] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. All electrical components mentioned in this document are electrically connected to an external main controller and 220V AC mains power, and the main controller can be a conventionally known device such as a computer that provides control.

[0027] The present invention will be further described below with reference to the accompanying drawings:

[0028] like Figures 1-6 As shown, a support frame includes a first support frame 1, a second support frame 2, a third support frame 3, and a support mesh mechanism.

[0029] The first support frame 1 is positioned front to back. The second support frame 2 is slidably connected to the front side of the first support frame 1 via a first telescopic mechanism. The third support frame 3 is slidably connected to the front side of the second support frame 2 via a second telescopic mechanism. Both the first and second telescopic mechanisms consist of two electrically operated telescopic rods 5. The two electrically operated telescopic rods 5 of the first telescopic mechanism are fixed between the first support frame 1 and the second support frame 2, and the two electrically operated telescopic rods 5 of the second telescopic mechanism are fixed between the second support frame 2 and the third support frame 3. The front sides of the first support frame 1 and the second support frame 2 are open, while the third support frame 3 is closed in a U-shape. The first support frame 1, the second support frame 2, and the third support frame 3 are moved up and down and supported by three drive mechanisms, which consist of four hydraulic cylinders 4 and four drive motors. The four hydraulic cylinders 4 of the structure are respectively fixed at the four corners of the bottom of the first support frame 1, the second support frame 2, and the third support frame 3. According to the usage requirements, the distance between the first support frame 1 and the second support frame 2 is adjusted by extending and retracting the two electric telescopic rods 5 of the first telescopic mechanism, and the distance between the second support frame 2 and the third support frame 3 is adjusted by extending and retracting the two electric telescopic rods 5 of the second telescopic mechanism, thereby realizing the adjustment of the overall length of the support device. The first support frame 1, the second support frame 2, and the third support frame 3 are moved up and down by several hydraulic cylinders 4 to support them. The first support frame 1, the second support frame 2, and the third support frame 3 support the surrounding rock. Personnel and conveyors can pass under the first support frame 1, the second support frame 2, and the third support frame 3.

[0030] The support structure includes two connecting straps 604 and a support net 605, both located at the top of the first support frame 1. The two connecting straps 604 are fixed to the front side of the support net 605. A first winding and unwinding assembly is fixed to the front side of the third support frame 3. The first winding and unwinding assembly winds up and unwinds the two connecting straps 604. The first winding and unwinding assembly includes a first placement slot 601 and a first rotating shaft 602. The first placement slot 601 is located on the front side of the third support frame 3, and the first rotating shaft 602 is rotatably connected within the first placement slot 601. A motor 606 is fixed to the input end of the first rotating shaft 602. A second winding and unwinding assembly is fixed to the rear side of the first support frame 1. The second winding and unwinding assembly winds up and unwinds the support net 605. The second winding and unwinding assembly includes a second placement groove 607 and a second rotating shaft 603. The second placement groove 607 is located on the rear side of the first support frame 1. The second rotating shaft 603 is rotatably connected to the second placement groove 607. The motor 606 is fixed to the input end of the second rotating shaft 603. The support net mechanism also includes a scraper 7, which is fixed to the rear side of the first support frame 1. The tip of the scraper 7 is connected to... When the support netting 605 comes into contact, two motors 606 rotate synchronously in the forward direction, thereby driving the first rotating shaft 602 and the second rotating shaft 603 to rotate. The first rotating shaft 602 then winds the two connecting straps 604 into the first placement groove 601, while the second rotating shaft 603 releases the support netting 605. This allows the support netting 605 to cover the tops of the first support frame 1, the second support frame 2, and the third support frame 3, changing the support from linear to surface support. This ensures the support force is evenly distributed across the surrounding rock surface, improving the support effect and intercepting local rockfalls, thus enhancing the work efficiency. For environmental safety, after use, the two motors 606 rotate synchronously in opposite directions. The first shaft 602 releases the two connecting belts 604, and the second shaft 603 rolls the support net 605 into the second placement groove 607. During this process, the debris intercepted on the support net 605 falls to the rear of the first support frame 1. The scraper 7 removes the remaining debris from the surface of the support net 605. The two connecting belts 604 ensure that the support net 605 can be completely cleaned by the scraper 7 and put into the second placement groove 607 when the support device is not in use, thus preventing exposure and dust accumulation.

[0031] Working principle: Based on usage requirements, the extension of the two electric telescopic rods 5 of the first telescopic mechanism increases the distance between the first support frame 1 and the second support frame 2. Similarly, the extension of the two electric telescopic rods 5 of the second telescopic mechanism increases the distance between the second support frame 2 and the third support frame 3, thereby adjusting the overall length of the support device. Several hydraulic cylinders 4 drive the first support frame 1, the second support frame 2, and the third support frame 3 upwards and provide support. The first support frame 1, the second support frame 2, and the third support frame 3 support the surrounding rock. During this process, two motors 606... The synchronous forward rotation drives the first rotating shaft 602 and the second rotating shaft 603 to rotate. The first rotating shaft 602 winds the two connecting belts 604 into the first placement groove 601, and the second rotating shaft 603 releases the support net 605, so that the support net 605 covers the top of the first support frame 1, the second support frame 2 and the third support frame 3, changing from line support to surface support. This allows the support force to be evenly distributed to the surrounding rock surface, improving the support effect and intercepting local rockfalls, thus improving the safety of the working environment. Personnel and conveyors can pass under the first support frame 1, the second support frame 2 and the third support frame 3.

[0032] After use, the first and second telescopic mechanisms drive the second support frame 2 and the third support frame 3 to reset. Several hydraulic cylinders 4 drive the first support frame 1, the second support frame 2, and the third support frame 3 to move downward. During this process, two motors 606 rotate synchronously in opposite directions. The first rotating shaft 602 releases the two connecting belts 604, and the second rotating shaft 603 rolls the support net 605 into the second placement groove 607. The debris intercepted on the support net 605 falls to the rear of the first support frame 1. The scraper 7 scrapes off the remaining debris on the surface of the support net 605. The two connecting belts 604 ensure that the support net 605 can be completely cleaned by the scraper 7 and put into the second placement groove 607 when the support device is not in use, thus avoiding exposure and dust accumulation.

[0033] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A support frame, characterized in that: It includes a first support frame (1), a second support frame (2), a third support frame (3), and a support mesh mechanism; The first support frame (1) is arranged in front and behind, the second support frame (2) is slidably connected to the front side of the first support frame (1) through the first telescopic mechanism, and the third support frame (3) is slidably connected to the front side of the second support frame (2) through the second telescopic mechanism. The first support frame (1), the second support frame (2) and the third support frame (3) are driven up and down and supported by three driving mechanisms respectively. The support structure includes two connecting straps (604) and a support net (605). Both the two connecting straps (604) and the support net (605) are located on the top of the first support frame (1). The two connecting straps (604) are fixed to the front side of the support net (605). A first winding and unwinding assembly is fixed to the front side of the third support frame (3). The two connecting straps (604) are wound up and unwound by the first winding and unwinding assembly. A second winding and unwinding assembly is fixed to the rear side of the first support frame (1). The support net (605) is wound up and unwound by the second winding and unwinding assembly.

2. A support frame according to claim 1, characterized in that: The support mesh mechanism also includes a scraper (7), which is fixed to the rear side of the first support frame (1), and the tip of the scraper (7) is in contact with the support mesh (605).

3. A support frame according to claim 1, characterized in that: The first retractable assembly includes a first placement slot (601) and a first rotating shaft (602). The first placement slot (601) is opened on the front side of the third support frame (3). The first rotating shaft (602) is rotatably connected in the first placement slot (601). A motor (606) is fixed at the input end of the first rotating shaft (602).

4. A support frame according to claim 3, characterized in that: The second retractable assembly includes a second placement slot (607) and a second rotating shaft (603). The second placement slot (607) is located on the rear side of the first support frame (1). The second rotating shaft (603) is rotatably connected in the second placement slot (607). The motor (606) is fixed at the input end of the second rotating shaft (603).

5. A support frame according to claim 1, characterized in that: The first support frame (1) and the second support frame (2) are both open on the front side, and the third support frame (3) is closed in the shape of a square.

6. A support frame according to claim 1, characterized in that: Both the first telescopic mechanism and the second telescopic mechanism consist of two electric telescopic rods (5). The two electric telescopic rods (5) of the first telescopic mechanism are fixed between the first support frame (1) and the second support frame (2), and the two electric telescopic rods (5) of the second telescopic mechanism are fixed between the second support frame (2) and the third support frame (3).

7. A support frame according to claim 1, characterized in that: The driving mechanism consists of four hydraulic cylinders (4), which are respectively fixed at the four corners of the bottom of the first support frame (1), the second support frame (2), and the third support frame (3).

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