Adjustable steel support

Abstract

The utility model discloses an adjustable steel support which comprises an outer pipe body and an inner pipe body which are matched in a sliding mode, a movable groove is formed in one side wall of the outer pipe body, the inner pipe body is inserted into the movable groove in a matched mode, a sliding sleeve is prefabricated in the inner pipe body, the sliding sleeve and the inner pipe body are welded into a whole, and a positioning rod is arranged in the sliding sleeve in a sliding mode. A plurality of positioning holes distributed at equal intervals are formed in the outer wall of one side of the outer pipe body, the positioning rod penetrates through one positioning hole in a sliding mode, a rotary knob is rotationally connected to the side, opposite to the sliding sleeve, of the positioning rod, and an inner chamber is formed in the side, close to the rotary knob, of the interior of the positioning rod; a driving bevel gear and two driven bevel gears meshed with the two sides of the driving bevel gear respectively are arranged in the inner chamber, the driving bevel gear and the two driven bevel gears are each coaxially connected with an inner fulcrum shaft, and the inner fulcrum shaft on the driving bevel gear is coaxially connected with the rotary knob. According to the adjustable steel support, the adjustability of the positions of the two corner plates is guaranteed, and the application range is widened.

Description

Technical Field

[0001] The utility model belongs to the technical field of steel supports, and particularly relates to an adjustable steel support. Background Technique

[0002] Steel supports refer to using steel pipes, H-shaped steel, angle steel, etc. to enhance the stability of engineering structures. Generally, they are inclined connecting members, and the most common shapes are herringbone and cross shapes. Steel supports are widely used in subways and foundation pit enclosures.

[0003] In the process of implementing the present utility model, the inventor found that there are at least the following problems in this technology: For existing steel supports, their positions of side corner plates (used for connecting and fixing with external mechanical steel structures) usually cannot be adjusted, resulting in that they can only be adapted to installations at specified distances and specified positions, thus greatly limiting their scope of application.

[0004] Therefore, we propose an adjustable steel support to solve the above problems. Content of the Utility Model

[0005] The main purpose of the present utility model is to provide an adjustable steel support, which ensures the adjustability of the positions of two corner plates, improves the scope of application, and also ensures their stability, effectively solving the problems in the background technique.

[0006] To achieve the above purpose, the present utility model adopts the following technical solutions:

[0007] An adjustable steel support includes an outer tube body and an inner tube body that are slidably matched. An activity groove is formed on one side wall of the outer tube body, and the inner tube body is inserted into the activity groove in a fitting manner. A sliding sleeve is prefabricated in the inner tube body, and the sliding sleeve is welded to the inner tube body as a whole. A positioning rod is slidably arranged in the sliding sleeve. A plurality of equally spaced positioning holes are formed on the outer wall of one side of the outer tube body, and the positioning rod slidably passes through one of the positioning holes;

[0008] A knob is rotatably connected to the side of the positioning rod facing away from the sliding sleeve. An inner chamber is formed on the side of the positioning rod close to the knob. A main bevel gear and two secondary bevel gears respectively meshing on both sides of the main bevel gear are arranged in the inner chamber. An inner support shaft is coaxially connected to each of the main bevel gear and the two secondary bevel gears. The inner support shaft on the main bevel gear is coaxially connected to the knob;

[0009] Side receiving grooves are formed on both sides of the outer wall of the positioning rod. Inner support shafts on the two secondary bevel gears are respectively coaxially connected with screw rods. Angle blocks are respectively sleeved on the two screw rods in a threaded manner, and the angle blocks are in contact with the inner walls of the side receiving grooves. Card slots cooperating with the angle blocks are formed on both sides of each positioning hole, so as to facilitate fixing the positioning rod in the positioning hole through the two angle blocks, and keeping a relatively stable state between the outer tube body and the inner tube body.

[0010] As a preferred embodiment, angle plates are fixedly welded to the opposite sides of the outer tube body and the inner tube body respectively; both of the two angle plates are used for connecting with the structure to be fixed outside.

[0011] As a preferred embodiment, U-shaped handles are respectively connected to both sides of the side wall of the positioning rod facing away from the sliding sleeve; thus, it is convenient to pull the positioning rod by holding the handles, so that the positioning rod can be telescoped in the sliding sleeve.

[0012] As a preferred embodiment, a groove is formed at the center of the side wall of the positioning rod facing away from the sliding sleeve, and the knob is installed on the inner wall of the groove; so that the knob can be hidden and protected in the groove.

[0013] As a preferred embodiment, there are three inner support shafts in total and all of them are rotatably connected to the positioning rod; so that the structures of the main bevel gear and the driven bevel gear are kept stable.

[0014] As a preferred embodiment, the two screw rods are respectively located in the two side receiving grooves, and both of the two screw rods are rotatably connected to the positioning rod; so that the screw rods can operate stably.

[0015] In summary, the technical effects and advantages of the present utility model are as follows:

[0016] For this adjustable steel support, by relatively sliding between the outer tube body and the inner tube body, the distance between the two angle plates is changed, and the positioning rod is passed through a positioning hole at a suitable position, and the knob is rotated to make the bevel gears operate, driving the two screw rods to operate, so that the two angle blocks slide into the two card slots, fixing the outer tube body and the inner tube body. In this way, the adjustability of the positions of the two angle plates is ensured, the applicable range is improved, and the stability of the two is also ensured.

[0017] For this adjustable steel support, the positioning rod is aligned with the position of one of the positioning holes. At this time, a person's hand can pull the two handles through this positioning hole, slide the positioning rod out of the sliding sleeve, and make the two angle blocks face the card slots on both sides of the positioning hole. Subsequently, the knob is rotated to drive the main bevel gear and the two driven bevel gears to operate, so that the screw rods on both sides of the two driven bevel gears operate accordingly, driving the two angle blocks to slide along the inner walls of the two side receiving grooves, making the two angle blocks slide into the two card slots respectively, and fixing the positioning rod in this positioning hole, thus fixing the outer tube body and the inner tube body, thereby realizing the adjustment of the positions of the two angle plates and ensuring the stability of the outer tube body and the inner tube body. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0019] Figure 2 is a vertical sectional view of the present utility model;

[0020] Figure 3Partial horizontal cross-sectional view of the present utility model;

[0021] Figure 4 For the present utility model Figure 3 Enlarged view of the structure at position A in the present utility model;

[0022] Figure 5 For the present utility model Figure 1 Enlarged view of the structure at position B in the present utility model.

[0023] In the figure: 1. Outer tube body; 2. Inner tube body; 3. Corner plate; 4. Activity groove; 5. Sliding sleeve; 6. Positioning rod; 7. Positioning hole; 8. Handle; 9. Groove; 10. Knob; 11. Inner chamber; 12. Main bevel gear; 13. Driven bevel gear; 14. Inner support shaft; 15. Side storage groove; 16. Screw rod; 17. Angle block. Specific implementation mode

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0025] Referring to Figures 1-5 , an adjustable steel support includes an outer tube body 1 and an inner tube body 2 that are slidably mated. Corner plates 3 are fixedly welded to the opposite sides of the outer tube body 1 and the inner tube body 2 respectively. Both corner plates 3 are used to connect to the external structure to be fixed. An activity groove 4 is formed on one side wall of the outer tube body 1, and the inner tube body 2 is inserted into the activity groove 4 in a fitting manner. A sliding sleeve 5 is prefabricated in the inner tube body 2, and the sliding sleeve 5 is welded to the inner tube body 2 as a whole. A positioning rod 6 is slidably arranged in the sliding sleeve 5. A plurality of equally spaced positioning holes 7 are formed on the outer wall of one side of the outer tube body 1, and the positioning rod 6 slides through one of the positioning holes 7;

[0026] On both sides of the side wall of the positioning rod 6 facing away from the sliding sleeve 5, U-shaped handles 8 are respectively connected, so as to facilitate pulling the positioning rod 6 by holding the handle 8, enabling the positioning rod 6 to expand and contract in the sliding sleeve 5. A knob 10 is rotatably connected to the side of the positioning rod 6 facing away from the sliding sleeve 5. A groove 9 is formed at the center of the side wall of the positioning rod 6 facing away from the sliding sleeve 5, and the knob 10 is installed on the inner wall of the groove 9, so that the knob 10 can be hidden and protected in the groove 9. An inner chamber 11 is formed on the side of the positioning rod 6 close to the knob 10. A main bevel gear 12 and two driven bevel gears 13 respectively meshing with both sides of the main bevel gear 12 are arranged in the inner chamber 11. An inner support shaft 14 is coaxially connected to each of the main bevel gear 12 and the two driven bevel gears 13. There are three inner support shafts 14 in total and they are all rotatably connected to the positioning rod 6, so as to keep the structures of the main bevel gear 12 and the driven bevel gears 13 stable. The inner support shaft 14 on the main bevel gear 12 is coaxially connected to the knob 10;

[0027] On both sides of the outer wall of the positioning rod 6, side receiving grooves 15 are provided. Inner support shafts 14 on two bevel gears 13 are respectively coaxially connected with screw rods 16. The two screw rods 16 are respectively located in the two side receiving grooves 15, and the two screw rods 16 are both rotatably connected to the positioning rod 6, so that the screw rods 16 can operate stably. Angle blocks 17 are respectively sleeved on the two screw rods 16 in a threaded manner, and the angle blocks 17 are attached to the inner walls of the side receiving grooves 15. On both sides of each positioning hole 7, clamping grooves cooperating with the angle blocks 17 are provided, so that the positioning rod 6 can be fixed in the positioning hole 7 through the two angle blocks 17, and a relatively stable state is maintained between the outer tube body 1 and the inner tube body 2.

[0028] For this adjustable steel support: when it is necessary to adjust the distance between the two corner plates 3 to adapt to installations in different environments, first make the inner tube body 2 slide in the moving groove 4 (at this time, the positioning rod 6 is completely retracted into the sliding sleeve 5, so the positioning rod 6 will not touch the outer tube body 1). When sliding to a suitable position, align the positioning rod 6 with one of the positioning holes 7. At this time, a person's hand can pull the two handles 8 through this positioning hole 7, slide the positioning rod 6 out of the sliding sleeve 5, and make the two angle blocks 17 face the clamping grooves on both sides of the positioning hole 7. Subsequently, rotate the knob 10 to drive the main bevel gear 12 and the two bevel gears 13 to operate, so that the screw rods 16 on both sides of the two bevel gears 13 operate accordingly, thereby driving the two angle blocks 17 to slide along the inner walls of the two side receiving grooves 15 (translate in opposite directions), so that the two angle blocks 17 respectively slide into the two clamping grooves, and the positioning rod 6 is fixed in this positioning hole 7, thus fixing the outer tube body 1 and the inner tube body 2, and realizing the adjustment of the positions of the two corner plates 3 while ensuring the stability of the outer tube body 1 and the inner tube body 2.

[0029] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. An adjustable steel support, comprising an outer tube body (1) and an inner tube body (2) that are slidably matched, wherein a movable groove (4) is formed on one side wall of the outer tube body (1), and the inner tube body (2) is inserted into the movable groove (4) in an anastomotic manner, characterized in that: A sliding sleeve (5) is prefabricated in the inner tube body (2), wherein a positioning rod (6) is slidably arranged in the sliding sleeve (5), and a plurality of positioning holes (7) distributed at equal intervals are formed on the outer wall of one side of the outer tube body (1), and the positioning rod (6) slides through one of the positioning holes (7); The side of the positioning rod (6) facing away from the sliding sleeve (5) is rotatably connected to a knob (10), and an inner chamber (11) is formed on a side of the positioning rod (6) close to the knob (10), wherein a main bevel gear (12) and two slave bevel gears (13) respectively meshed with two sides of the main bevel gear (12) are arranged in the inner chamber (11), and an inner support shaft (14) is coaxially connected to the main bevel gear (12) and the two slave bevel gears (13), respectively, and the inner support shaft (14) on the main bevel gear (12) is coaxially connected to the knob (10); Side receiving grooves (15) are provided on both sides of the outer wall of the positioning rod (6); the two inner support shafts (14) on the two bevel gears (13) are coaxially connected with screw rods (16); the two screw rods (16) are respectively threaded with angle blocks (17), and the angle blocks (17) are fitted with the inner walls of the side receiving grooves (15); and each of the positioning holes (7) is provided with slots matching the angle blocks (17) on both sides.

2. The adjustable steel support according to claim 1, characterized in that: Corner plates (3) are fixedly welded to the opposite sides of the outer tube body (1) and the inner tube body (2).

3. The adjustable steel support according to claim 1, characterized in that: The two sides of the side wall of the positioning rod (6) facing away from the sliding sleeve (5) are respectively connected with U-shaped handles (8).

4. The adjustable steel support according to claim 1, characterized in that: A groove (9) is formed at the center of a side wall of the positioning rod (6) facing away from the sliding sleeve (5), and the knob (10) is mounted on the inner wall of the groove (9).

5. The adjustable steel support according to claim 1, characterized in that: There are three inner support shafts (14) in total and all are rotatably connected to the positioning rod (6).

6. The adjustable steel support according to claim 1, characterized in that: The two screw rods (16) are respectively located in the two side receiving grooves (15), and the two screw rods (16) are both rotatably connected to the positioning rod (6).

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