Adjustable supporting frame

Abstract

The utility model discloses an adjustable supporting frame which comprises a support body and a first rotating frame, and one end of the first rotating frame is hinged to the support body to form a first hinged end. The device further comprises a second rotating rod, a third rotating rod and an adjusting unit, the second rotating rod and the third rotating rod are arranged in a crossed mode, the close ends are hinged to the output end of the adjusting unit, the other end of the second rotating rod is hinged to the first rotating frame in a matched mode to form a second hinged end, and the second hinged end and the first hinged end are staggered in position. The other end of the third rotating rod is hinged to the support body in a matched mode, and the adjusting unit is configured to drive the close end to move close to or away from the support body. The supporting device has the advantages that the adjustable supporting effect of the first rotating frame is achieved, the danger caused by the empty top of a top plate in traditional supporting is relieved, the first rotating frame has the upward supporting effect on the top plate, more space can be reserved, and personnel operation is facilitated.

Description

Technical Field

[0001] This utility model relates to the field of coal mine excavation technology, and in particular to an adjustable support frame. Background Technology

[0002] When providing support for the U-shaped canopy at the tunneling face, temporary support is usually provided by hanging two No. 11 I-beams on the canopy beam. Each time the cutting is completed and support is provided, the tunneling machine's beam cannon is used, and then the forward beam is moved manually.

[0003] During manual excavation, workers need to stand on scaffolding and use pneumatic drills to break through the roof. Support work can only be carried out after the roof has been excavated to a sufficient distance. The entire process involves working under an open roof without any support. The space on the scaffolding is narrow and the height is insufficient. The scaffolding sways with the construction work, making it impossible to use individual water-pressure supports. The entire open roof area only has two H-beams, and they are not firmly connected to the roof. Under these conditions, hanging wire mesh is essentially working under an open roof, posing a great threat to construction safety.

[0004] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0005] The technical problem to be solved by this utility model is to achieve adjustable support.

[0006] This utility model solves the above-mentioned technical problems through the following technical means:

[0007] This utility model claims protection for an adjustable support frame, including a support body and a first rotating frame, one end of which is hinged to the support body to form a first hinge end.

[0008] It also includes a second rotating rod, a third rotating rod, and an adjustment unit. The second and third rotating rods are arranged in a cross pattern, and their adjacent ends are respectively hinged to the output end of the adjustment unit. The other end of the second rotating rod is hinged to the first rotating frame to form a second hinge end. The second hinge end and the first hinge end are staggered from each other. The other end of the third rotating rod is hinged to the support body. The adjustment unit is configured to drive the adjacent ends to move closer to or away from the support body.

[0009] Preferably, the support body has a cross-sectional shape, and the first rotating frame is installed on the top of the support body through a hinge to form the first hinge end.

[0010] Preferably, the adjustment unit includes a sleeve and a screw, with one end of the screw being connected to the support body upright, the screw thread engaging the sleeve, a second rotating rod hinged to the upper side of the outer sleeve wall, and a third rotating rod hinged to the upper side of the outer sleeve wall.

[0011] Preferably, the support body upright is connected to the screw rod via a universal joint.

[0012] Preferably, the screw is a coarse-pitch screw.

[0013] Preferably, the upper surface of the first rotating frame is at least two inclined surfaces that slope upward away from the support body, and the slope of the inclined surface closer to the support body is greater than the slope of the inclined surface farther from the support body.

[0014] Preferably, a handle is provided at the end of the screw that is away from the support body.

[0015] Preferably, it also includes a stop block and a locking bolt. A stop block body is provided on the side of the support body upright away from the adjustment unit, and a bayonet is formed between the stop block body and the support body crossbar for fitting the part to be connected.

[0016] A threaded hole is opened on the crossbar of the bracket body near the stop. The axis of the threaded hole is vertical. The locking bolt is engaged in the threaded hole from bottom to top, and the top of the locking bolt abuts against the part to be connected.

[0017] Preferably, the stop body includes a first stop, the first stop is protruding from the top of the bracket body, the first stop has an inverted V cross section, the part to be connected has a V cross section, and the first stop is fitted with the top of the part to be connected.

[0018] Preferably, the stop block body includes a second stop block, the support body upright has the second stop block protruding, and the second stop block abuts against the side of the part to be connected.

[0019] The advantages of this utility model are:

[0020] I. This utility model uses an adjustment unit to drive the adjacent ends to move closer to or further away from the support body, thereby causing the first rotating frame to rotate around the first hinge end.

[0021] Furthermore, by hinged to the support body, the first rotating frame is driven to rotate around the first hinge end, achieving an adjustable support effect for the first rotating frame. This adjustment has three advantages:

[0022] Advantage 1: It reduces the danger caused by an open roof in traditional support systems, and the first rotating frame provides upward support to the roof, leaving more space for personnel operation; Advantage 2: The rotation angle of the first rotating frame is adjustable, making it highly adaptable; Advantage 3: The support body forms the entire support frame as a whole, without other fragmented parts, making it more suitable for high-altitude operations.

[0023] Second, the screw adjustment itself has a certain degree of stability, and when supporting the top plate, the adjustment unit, the support body and the support body form a relatively stable triangular structure, which can further enhance the stability of the support.

[0024] Third, coarse-pitch screws have relatively low adjustment precision, but high meshing stability, thus providing better support and stability.

[0025] Fourth, the upper surface of the first rotating frame has at least two inclined surfaces that slope upwards away from the support body. This can prevent the device from deforming due to the pressure on the support body. Furthermore, limiting the slope of the inclined surface near the support body to be greater than that of the inclined surface away from the support body is to avoid the first rotating frame tilting too much during the adjustment process, resulting in a low degree of contact with the top plate. This would not only fail to achieve the support effect but may also damage the top plate.

[0026] V. This utility model also includes a stop block and a locking bolt for mounting the bracket body on the part to be connected. By fitting the part to be connected into the slot formed between the stop block body and the crossbar of the bracket body, and tightening the locking bolt, the top of the locking bolt abuts against the part to be connected to fix the bracket body.

[0027] Sixth, considering that in actual work, the support body is generally installed on the canopy beam, and the canopy beam is generally U-shaped or V-shaped in cross-section, a first stop block with an inverted V cross-section is further set, which can fit into the canopy beam and then be fixed by locking bolts to achieve longitudinal fixation. At the same time, a second stop block can be added, which abuts against the side of the part to be connected to achieve lateral fixation. Attached Figure Description

[0028] Figure 1 This is a structural schematic diagram of an adjustable support frame according to Embodiment 1 of this utility model;

[0029] Figure 2 This is a structural schematic diagram of an adjustable support frame according to Embodiment 3 of this utility model.

[0030] 1. Support body; 2. First rotating frame; 3. Second rotating rod; 4. Third rotating rod; 5. Adjustment unit; 51. Sleeve; 52. Screw; 53. Universal joint; 54. Handle;

[0031] 6. Stop block body; 61. First stop block; 62. Second stop block; 7. Locking bolt. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below in conjunction with the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0033] Example 1

[0034] See Figure 1 This embodiment claims protection for an adjustable support frame, including a support body 1 and a first rotating frame 2. The support body 1 has an L-shaped cross-section. The first rotating frame 2 is mounted on the top of the support body 1 via a hinge to form a first hinge end. The upper surface of the first rotating frame 2 is at least two inclined surfaces that slope upward away from the support body 1, and the slope of the inclined surface near the support body 1 is greater than the slope of the inclined surface away from the support body 1.

[0035] It is worth noting that the upper surface of the first rotating frame 2 has at least two inclined surfaces that slope upward away from the support body 1. This can prevent the device from deforming due to the pressure on the support body 1. Furthermore, limiting the slope of the inclined surface near the support body 1 to be greater than that of the inclined surface away from the support body 1 is to avoid the first rotating frame 2 tilting too much during the adjustment process, resulting in a low degree of contact with the top plate, which would not only fail to achieve the support effect but may also damage the top plate.

[0036] It also includes a second rotating rod 3, a third rotating rod 4, and an adjustment unit 5. The second rotating rod 3 and the third rotating rod 4 are arranged in a cross pattern, and their adjacent ends are respectively hinged to the output end of the adjustment unit 5. The other end of the second rotating rod 3 is hinged to the first rotating frame 2 to form a second hinge end. The second hinge end and the first hinge end are staggered from each other. The other end of the third rotating rod 4 is hinged to the support body 1. The adjustment unit 5 is configured to drive the adjacent ends to move closer to or away from the support body 1.

[0037] Furthermore, the adjustment unit 5 includes a sleeve 51 and a screw 52. The support body 1 is connected to the screw 52 via a universal joint 53. The screw 52 is a coarse-pitch screw 52. The screw 52 thread engages with the sleeve 51. A second rotating rod 3 is hinged to the upper side of the outer cylinder wall of the sleeve 51. A third rotating rod 4 is hinged to the upper side of the outer cylinder wall of the sleeve 51. A handle 54 is provided at the end of the screw 52 away from the support body 1.

[0038] The screw adjustment itself has a certain degree of stability, and when supporting the top plate, the adjustment unit 5, the bracket body 1 and the bracket body 1 form a relatively stable triangular structure, which can further enhance the stability of the support. Preferably, the adjustment accuracy of the coarse thread screw 52 is relatively low, but the meshing stability is high, so the support stability effect is better.

[0039] In this embodiment, by setting the adjustment unit 5, the near end is driven to move closer to or further away from the support body 1, which in turn drives the first rotating frame 2 to rotate around the first hinge end.

[0040] Furthermore, by hinged to the support body 1 and the first rotating frame 2, the first rotating frame 2 is rotated around the first hinge end, achieving an adjustable support effect. This adjustment has three advantages: First, it reduces the danger caused by an open roof in traditional support systems, and the first rotating frame 2 provides upward support to the roof, allowing for more space and easier personnel operation; Second, the rotation angle of the first rotating frame 2 is adjustable, making it highly adaptable; Third, the support body 1 forms the entire support frame as a whole, without other fragmented parts, making it more suitable for high-altitude operations.

[0041] Example 2

[0042] This embodiment, based on Embodiment 1, provides specific implementation data. The first rotating frame 2 is made of 20x20x4 square tubing (all units are mm). The square tubing is welded and processed into a square frame with a width of 20mm and a length of 450mm. The first rotating frame 2 is suitable for a roof curvature of 400mm in length and 200mm in width. The connecting parts are U-shaped canopy beams of 29U / 36U commonly used in underground mines. The locking bolts 7 are M24mm x 120mm bolts. The second rotating rod 3 and the third rotating rod 4 are both 120mm x 30mm. The screw rod 52 is a 300mm x 20mm coarse-thread screw rod, which can achieve a protection area of ​​0.09 square meters. At this time, the first rotating frame 2 expands its influence area by about 0.4 square meters, with a support strength of about 200KG, which meets the requirements for beam adjustment, netting, and personnel adjustment protection. The height is adjustable by 300mm. It especially meets the protection requirements for manual tunneling and excavation as well as the netting requirements for mechanical tunneling. For each canopy under construction, multiple canopies can be installed according to the number of personnel to ensure effective protection.

[0043] Example 3

[0044] See Figure 2 Based on Embodiment 1, this embodiment also includes a stop block and a locking bolt 7. A stop block body 6 protrudes from the side of the support body 1 upright away from the adjustment unit 5, and a bayonet is formed between the stop block body 6 and the crossbar of the support body 1 for fitting the parts to be connected.

[0045] Furthermore, the block body 6 includes a first block 61, the top of the bracket body 1 is provided with the first block 61, the first block 61 has an inverted V cross section, the part to be connected has a V cross section, the first block 61 is fitted with the top of the part to be connected, the block body 6 also includes a second block 62, the upright of the bracket body 1 is provided with the second block 62, the second block 62 is in contact with the side of the part to be connected.

[0046] A threaded hole is opened on the crossbar of the bracket body 1 near the stop block. The axis of the threaded hole is vertical. The locking bolt 7 is engaged in the threaded hole from bottom to top. The top of the locking bolt 7 abuts against the part to be connected.

[0047] Based on Embodiment 1, this embodiment further includes a stop block and a locking bolt 7 for mounting the bracket body 1 onto the component to be connected. By fitting the component to be connected into the slot formed between the stop block body 6 and the crossbar of the bracket body 1, and tightening the locking bolt 7, the top of the locking bolt 7 abuts against the component to be connected, thereby fixing the bracket body 1.

[0048] Furthermore, considering that in actual work, the support body 1 is generally installed on the canopy beam, and the canopy beam is generally U-shaped or V-shaped in cross-section, a first stop 61 with an inverted V cross-section is further provided, which can fit into the canopy beam and be fixed by locking bolts 7 to achieve longitudinal fixation. At the same time, a second stop 62 can be added, which abuts against the side of the part to be connected to achieve lateral fixation.

[0049] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. An adjustable support frame, characterized by, It includes a support body (1) and a first rotating frame (2), one end of which is hinged to the support body (1) to form a first hinge end; It also includes a second rotating rod (3), a third rotating rod (4) and an adjustment unit (5). The second rotating rod (3) and the third rotating rod (4) are arranged in a cross pattern, and their adjacent ends are respectively hinged to the output end of the adjustment unit (5). The other end of the second rotating rod (3) is hinged to the first rotating frame (2) to form a second hinge end. The second hinge end and the first hinge end are offset from each other. The other end of the third rotating rod (4) is hinged to the support body (1). The adjustment unit (5) is configured to drive the adjacent ends to move closer to or away from the support body (1).

2. An adjustable support frame according to claim 1, wherein, The support body (1) has a cross-sectional shape, and the first rotating frame (2) is installed on the top of the support body (1) through a hinge to form the first hinge end.

3. An adjustable support frame according to claim 1, wherein, The adjustment unit (5) includes a sleeve (51) and a screw (52). The support body (1) is connected to one end of the screw (52). The screw (52) is threaded into the sleeve (51). The upper side of the outer cylinder wall of the sleeve (51) is hinged to the second rotating rod (3). The upper side of the outer cylinder wall of the sleeve (51) is hinged to the third rotating rod (4).

4. An adjustable support frame according to claim 1, wherein, The support body (1) upright is connected to the screw (52) via a universal joint (53).

5. An adjustable support frame according to claim 1, wherein, The screw (52) is a coarse-pitch screw (52).

6. An adjustable support frame according to claim 1, wherein, The upper surface of the first rotating frame (2) is at least two inclined surfaces that slope upward away from the support body (1), and the slope of the inclined surface closer to the support body (1) is greater than the slope of the inclined surface away from the support body (1).

7. An adjustable support frame according to claim 1 wherein, A handle (54) is provided at the end of the screw (52) away from the bracket body (1).

8. An adjustable support frame according to claim 1, wherein, It also includes a stop block and a locking bolt (7). A stop block body (6) is protruding on the side of the support body (1) away from the adjustment unit (5). A bayonet for fitting the parts to be connected is formed between the stop block body (6) and the crossbar of the support body (1). The crossbar of the bracket body (1) near the stop block has a threaded hole. The axis of the threaded hole is vertical. The locking bolt (7) engages with the threaded hole from bottom to top. The top of the locking bolt (7) abuts against the part to be connected.

9. An adjustable support frame according to claim 1, wherein, The block body (6) includes a first block (61). The first block (61) protrudes from the top of the bracket body (1). The first block (61) has an inverted V-shaped cross section. The part to be connected has a V-shaped cross section. The first block (61) fits into the top of the part to be connected.

10. The adjustable support frame of claim 1, wherein, The block body (6) includes a second block (62), and the support body (1) has a second block (62) protruding from the upright. The second block (62) abuts against the side of the part to be connected.

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