Tower crane standard section angle steel V-shaped floating device

Abstract

The utility model relates to the technical field of standard knot production equipment, in particular to a tower crane standard knot angle steel V-shaped floating device which comprises a floating barrel, a hydraulic cylinder, a sliding block, a floating rod, a locking block, a spring, a V-shaped block, a supporting seat and a sealing cover. The sealing cover is arranged at the left end of the floating cylinder; the hydraulic cylinder is arranged at the right end of the floating cylinder; the sliding block is movably arranged on the inner side of the floating cylinder; the spring is compressed between the sliding block and the sealing cover through the locking block. The lower end of the right end part of the sliding block is provided with a lower inclined surface with low left and high right; the upper end of the floating rod is in sliding connection with the lower inclined surface through a supporting seat; by means of the angle steel positioning device, excessive deformation of angle steel caused by forced positioning can be avoided, and finally the dimensional accuracy of the angle steel is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of standard section production equipment, in particular to a V-shaped floating device for standard section angle steel of a tower crane. Background Art

[0002] Currently, the standard angle steel sections of tower cranes are straightened using a dedicated angle steel machine. This machine primarily consists of three tightening cylinders and three fixed V-blocks corresponding to the positions of the three tightening cylinders. During correction, the angle steel is positioned using the three fixed V-blocks before processing. Although the angle steel is manually straightened before processing, some degree of distortion and arching still exists. After processing and fixation, the ends of the angle steel are less affected by the V-block positioning. However, the middle section of the angle steel is forcibly squeezed by the V-blocks, flattening the arched area. This forced positioning can cause excessive deformation of the angle steel. Although the angle steel is processed under ideal conditions, once the fixed V-blocks are released, the angle steel will rebound to its initial state, causing errors in the subsequent processing of the angle steel. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the purpose of the utility model is to provide a V-shaped floating device for standard section angle steel of tower crane, which can avoid excessive deformation of the angle steel due to forced positioning and ultimately ensure the dimensional accuracy of the angle steel.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a V-shaped floating device of standard section angle steel for a tower crane, comprising a floating cylinder, a hydraulic cylinder, a slider, a floating rod, a locking block, a spring, a V-shaped block, a support seat and a sealing cover; the sealing cover is arranged at the left end of the floating cylinder, and the hydraulic cylinder is arranged at the right end of the floating cylinder; the slider is movably arranged on the inner side of the floating cylinder; the spring is compressed between the slider and the sealing cover through the locking block; a lower inclined surface with a lower left side and a higher right side is provided at the lower end of the right end portion of the slider; the upper end of the floating rod is slidably connected to the lower inclined surface through the support seat; the V-shaped block is fixedly arranged at the lower end of the floating rod.

[0005] Preferably, the support seat is composed of a base and a sleeve, the base is fixedly connected to the middle part of the outer periphery of the floating cylinder, the sleeve is arranged radially through the floating cylinder, and a through hole with the same inner diameter and coaxial with the inner diameter of the floating cylinder is also provided on the sleeve; the upper end of the floating rod is at least partially provided in the sleeve; the locking block is provided in the sleeve, and the lower end of the locking block is slidably connected to the outer periphery of the slider; the outer periphery of the slider is provided with a groove that cooperates with the locking block.

[0006] Preferably, the groove includes an upper bevel and a left bevel; the lower end of the locking block is in surface contact with the upper bevel and in point contact with the left bevel; at the same time, the angle between the upper bevel and the axis of the locking block is greater than the angle between the left bevel and the axis of the locking block.

[0007] Preferably, the angle between the lower inclined surface and the horizontal plane is 15°~45°.

[0008] Preferably, the lower inclined surface is parallel to the upper inclined surface.

[0009] Preferably, the top end of the floating rod is provided with a convex inclined surface matching the lower inclined surface.

[0010] Preferably, it further comprises a limiting member; the limiting member is arranged between the floating rod and the support seat, so that the floating rod abuts against the slider.

[0011] Preferably, it further comprises an adjusting screw; the adjusting screw passes through the sealing cover and is pressed against the spring.

[0012] Preferably, the adjusting screw is threadably connected to the sealing cover.

[0013] Preferably, the groove is located in the middle of the slider body.

[0014] Compared with the existing technology, the beneficial effect of the utility model is: by making the V-block float up and down, it is ensured that the angle steel can still maintain a certain degree of twisting arch within a given range after being fixed, so that the angle steel can still maintain its initial state before processing after processing is completed, while avoiding excessive deformation of the angle steel due to forced positioning, it also ensures the dimensional accuracy of the angle steel. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a cross-sectional view of the floating device of the present invention;

[0016] Figure 2 This is a schematic diagram of the slider structure of the utility model;

[0017] Figure 3 This is a schematic diagram of the V-shaped block and connecting rod structure of the utility model;

[0018] Figure 4 This is a working diagram of the floating device of the present invention.

[0019] In the figure: 1 floating cylinder, 2 hydraulic cylinder, 3 slider, 4 floating rod, 5 locking block, 6 spring, 7 V-block, 8 support seat, 9 sealing cover, 31 upper inclined surface, 32 lower inclined surface, 33 left inclined surface, 41 convex inclined surface, 81 sleeve, 82 through hole. DETAILED DESCRIPTION

[0020] The following describes the specific embodiments of the present invention in detail in conjunction with the accompanying drawings so that those skilled in the art can more clearly understand how to practice the present invention. Although the present invention is described in conjunction with its preferred specific embodiments, these embodiments are only illustrative, not limiting, of the scope of the present invention.

[0021] Specific embodiment 1: Please refer to Figure 1-4A tower crane standard section angle steel V-shaped floating device includes: a floating cylinder 1, a hydraulic cylinder 2, a slide block 3, a floating rod 4, a locking block 5, a spring 6, a V-shaped block 7, a support seat 8 and a sealing cover 9.

[0022] The floating cylinder 1 is a tubular structure, and a sealing cover 9 is provided at the left end of the floating cylinder 1 to seal the left end of the floating cylinder 1; the hydraulic cylinder 2 is provided at the right end of the floating cylinder 1, and the piston rod of the hydraulic cylinder 2 can axially extend and retract back and forth in the floating cylinder 1; the support seat 8 is composed of a base and a sleeve 81, the base is fixedly connected to the middle part of the outer periphery of the floating cylinder 1, and the sleeve 81 radially penetrates the floating cylinder 1. At the same time, a through hole 82 with the same inner diameter and coaxial with the inner diameter of the floating cylinder 1 is also provided on the sleeve 81; the locking block 5, the slider 3, the floating rod 4 and the V-shaped block 7 are arranged along the The support seat 8 is axially arranged from top to bottom, wherein the locking block 5 is slidably arranged in the sleeve 81, the slider 3 is slidably arranged in the floating cylinder 1, the locking block 5 is crimped with the slider 3, the upper end of the floating rod 4 is slidably connected to the outer periphery of the slider 3, the upper end of the V-block 7 is fixedly connected to the lower end of the floating rod 4, and the spring 6 is compressed between the slider 3 and the sealing cover 9; under the action of the spring 6 and the hydraulic cylinder 2, the slider 3 can slide back and forth along its axis in the floating cylinder 1 within a given range, so that the floating rod 4 together with the V-block 7 has the ability to float up and down.

[0023] The cam 33 is pressed against the top of the handle 31 and the cam 34 is pressed against the handle 35, so that the cam 33 is pressed against the handle 35. When the cam 33 is pressed, the cam 33 is pressed against the handle 35, so that the cam 33 is pressed against the handle 35. When the cam 33 is pressed, the cam 33 is pressed against the handle 35, so that the cam 33 is pressed against the handle 35.

[0024] Furthermore, the lower end of the right end of the slider 3 is formed with a lower inclined surface 32, which is parallel to the upper inclined surface 31. This causes the outer diameter of the right end of the slider 3 to taper outward. When the top end of the floating rod 4 contacts the lower inclined surface 32, the floating rod 4 can move up and down along the lower inclined surface 32. Furthermore, the L-shaped groove allows the locking block 5 to not only limit the position of the slider 3 but also prevent the slider 3 from rotating circumferentially, ensuring that the lower inclined surface 32 always faces downward and contacts the floating rod 4, achieving the up and down floating function.

[0025] In one embodiment, the angle between the lower slope 32 and the horizontal plane can be selected to be 45 degrees, 30 degrees, or 15 degrees.

[0026] In one embodiment, in order to better connect with the slider 3 , a convex inclined surface 41 is formed on the top of the floating rod 4 to match the lower inclined surface 32 .

[0027] At least part of the upper portion of the floating rod 4 is disposed within the support seat 8. To prevent the floating rod 4 from slipping off the support seat 8, the floating device should include a limiting member (not shown in the figure) during implementation. The limiting member is disposed between the floating rod 4 and the support seat 8 so that the floating rod 4 is always in contact with the slider 3.

[0028] In one embodiment, the floating device further includes an adjusting screw, which passes through the sealing cover 9 and is pressed against the spring 6 . The adjusting screw is threadedly connected to the sealing cover 9 , and the compression state of the spring 6 can be adjusted by rotating the adjusting screw.

[0029] When in use, the floating device needs to be fixedly installed in the angle steel machine and pressed against the upper side of the oil steel.

[0030] Working principle of this floating device:

[0031] After the angle steel is processed and in place, operate the tightening cylinders I and II to lift the angle steel to the fixed V-blocks I and II; 2. Operate the V-shaped floating device, and push the slider through the hydraulic cylinder 2 on the right to make the V-block 7 contact the angle steel; 3. Operate the tightening cylinder III to fix the middle part of the angle steel. Due to the guiding effect of the lower inclined surface of the slider and the action of the spring, the floating rod 4 and the V-block 7 can obtain the ability to float up and down, so that the pressure applied by the floating device on the angle steel is a slow pressure, and the angle steel will not produce excessive deformation under soft positioning; 4. After the angle steel is processed, release all the tightening cylinders, the angle steel will naturally fall and be transported out, the piston rod of the hydraulic cylinder 2 of the V-shaped floating device will retract, and the spring potential energy will be released to make the slider return to its initial position.

[0032] Through this technical solution, by making the V-block float up and down, it is ensured that the angle steel can still maintain a certain degree of twisting arch within a given range after being fixed, so that the angle steel can still maintain its initial state before processing after processing. While avoiding excessive deformation of the angle steel due to forced positioning, it also ensures the dimensional accuracy of the angle steel.

[0033] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A V-shaped floating device for standard angle steel of tower crane, characterized by: The invention comprises a floating cylinder (1), a hydraulic cylinder (2), a slider (3), a floating rod (4), a locking block (5), a spring (6), a V-shaped block (7), a support seat (8) and a sealing cover (9); the sealing cover (9) is arranged at the left end of the floating cylinder (1), and the hydraulic cylinder (2) is arranged at the right end of the floating cylinder (1); the slider (3) is movably arranged inside the floating cylinder (1); the spring (6) is compressed between the slider (3) and the sealing cover (9) through the locking block (5); a lower inclined surface (32) with a lower left side and a higher right side is provided at the lower end of the right end portion of the slider (3); the upper end of the floating rod (4) is slidably connected to the lower inclined surface (32) through the support seat (8); and the V-shaped block (7) is fixedly arranged at the lower end of the floating rod (4).

2. The V-shaped floating device for standard angle steel of tower crane according to claim 1 is characterized in that: The support seat (8) is composed of a base and a sleeve (81), the base is fixedly connected to the middle part of the outer periphery of the floating cylinder (1), the sleeve (81) is radially penetrated by the floating cylinder (1), and a through hole (82) having the same inner diameter as the floating cylinder (1) and being coaxial is provided on the sleeve (81); the upper end of the floating rod (4) is at least partially provided in the sleeve (81); the locking block (5) is provided in the sleeve (81), and the lower end of the locking block (5) is slidably connected to the outer periphery of the slider (3); the outer periphery of the slider (3) is provided with a groove matching the locking block (5).

3. The V-shaped floating device for standard angle steel of tower crane according to claim 2 is characterized in that: The groove comprises an upper inclined surface (31) and a left inclined surface (33); the lower end of the locking block (5) is in surface contact with the upper inclined surface (31) and in point contact with the left inclined surface (33); and at the same time, the angle between the upper inclined surface (31) and the axis of the locking block (5) is greater than the angle between the left inclined surface (33) and the axis of the locking block (5).

4. The V-shaped floating device for standard angle steel of tower crane according to claim 1 is characterized in that: The angle between the lower inclined surface (32) and the horizontal plane is 15° to 45°.

5. The V-shaped floating device for standard angle steel of tower crane according to claim 3 is characterized in that: The lower inclined surface (32) is parallel to the upper inclined surface (31).

6. The V-shaped floating device for standard angle steel of tower crane according to claim 1, characterized in that: The top end of the floating rod (4) is provided with a convex inclined surface (41) that matches the lower inclined surface (32).

7. The V-shaped floating device for standard angle steel of tower crane according to claim 1, characterized in that: It also includes a limiting member; the limiting member is arranged between the floating rod (4) and the support seat (8), so that the floating rod (4) and the slider (3) abut against each other.

8. The V-shaped floating device for standard angle steel of tower crane according to claim 1, characterized in that: It also includes an adjusting screw; the adjusting screw passes through the sealing cover (9) and is crimped with the spring (6).

9. The V-shaped floating device for standard angle steel of tower crane according to claim 8, characterized in that: The adjusting screw is threadedly connected to the sealing cover (9).

10. The V-shaped floating device for standard angle steel of tower crane according to claim 2, characterized in that: The groove is located in the middle of the slider (3) body.

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