Multi-stage height-adjustable top barrel tool for crane

Abstract

The utility model provides a multistage height-adjustable top cylinder tool for a crane, which comprises an upper top cylinder and a lower top cylinder, the upper top cylinder is hollow, the bottom of the upper top cylinder is provided with a first limiting device, the first limiting device comprises more than one limiting ring, the limiting ring is provided with a limiting bulge, and the limiting bulge is provided with a limiting groove. The lower top cylinder is provided with a second limiting device, the second limiting device comprises more than two first limiting rings, the first limiting rings are provided with limiting grooves, a containing cavity for the first limiting rings to rotate is formed between the two limiting rings, and the upper top cylinder and the lower top cylinder are rotatably connected through the containing cavity; and the upper jacking cylinder and the lower jacking cylinder are slidably connected through the limiting groove, adjustment is convenient, the structure is simple, and safety and reliability are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of crane auxiliary equipment, in particular to a multi-stage height-adjustable top cylinder tooling for a crane. Background Art

[0002] With the continuous development of social economy, jacks are used more and more in various industries. It can help people easily lift heavy objects and solve many tasks that cannot be completed by manpower. Especially in large equipment such as cranes, auxiliary supports are usually required during installation and maintenance to ensure safety and stability. The auxiliary supports can be brackets, wooden pads, top cylinders, etc., ensuring that the jacked equipment will not be displaced. After adding the auxiliary support, the stability and safety can be greatly improved.

[0003] For example, in the patent document with the patent application number 202321692678.1 and the publication date of November 28, 2023, a manually adjustable simple auxiliary top cylinder is disclosed, which includes a base with an inverted T-shaped cross-section. The base is composed of a support main body and a support table surface arranged below the support main body; a screw cavity is arranged inside the support main body, and the lower end of a support screw is screwed into the screw cavity. A load-bearing table surface is arranged at the top of the support screw; above the support main body, a rotating nut is sleeved on the support screw, and the bottom surface of the rotating nut abuts against the upper surface of the support main body. By rotating the rotating nut, the support screw is driven to rise or fall in the screw cavity of the support main body to achieve height adjustment. Then it is used to replace the frame of the electric hydraulic jack to support the grain conveying equipment. It has low cost, small floor area and is easy to use.

[0004] In the above literature, a screw cavity is arranged inside the support main body, the support screw extends into the screw cavity, the rotating nut is sleeved on the support screw, and the movement of the support screw is controlled by the rotation of the rotating sleeve. The friction between the nut and the screw may cause wear and affect the service life. Moreover, by rotating the rotating sleeve to control the movement of the support screw, it may take several attempts to reach the required support height, increasing the complexity of the operation; and when not only one top cylinder is used for the support equipment and several top cylinders need to be at the same jacking height, the top cylinders in this literature have no scale and can only be visually estimated during jacking. By rotating the support screw to achieve lifting and lowering, it is impossible to conveniently and accurately make the heights of the support screw screwed out and screwed in consistent, easily resulting in inconsistent jacking heights among the top cylinders during jacking, thus causing uneven stress. Summary of the Invention

[0005] The utility model provides a multi-stage height-adjustable top cylinder tooling for a crane, which is convenient for multi-stage adjustment and has a simple structure.

[0006] To achieve the above-mentioned purpose, the technical solution of the utility model is: a multi-stage height-adjustable top cylinder tooling for a crane, comprising an upper top cylinder and a lower top cylinder, the upper top cylinder is sleeved outside the lower fixed cylinder, and a first limit device is arranged at the bottom of the upper top cylinder, the first limit device comprises one or more limit rings, and one or more limit rings are arranged at intervals along the axial direction of the upper top cylinder, and the limit rings are arranged with two or more limit protrusions at intervals along the circumferential direction of the upper cylinder, and the lower top cylinder is provided with two or more second limit devices, the second limit device comprises two or more first limit rings, and the two or more first limit rings are arranged at intervals along the axial direction of the upper cylinder, and the first limit ring is provided with two or more limit grooves at intervals along the circumferential direction of the lower cylinder, the limit protrusion is stuck between the two first limit rings, and the upper top cylinder and the lower top cylinder are slidably connected through the limit grooves.

[0007] In the above arrangement, the upper top cylinder is provided with a limiting ring, the limiting ring is provided with a limiting protrusion, the lower top cylinder is provided with a first limiting ring, and the first limiting ring is provided with a limiting groove. When the limiting protrusion of the upper top cylinder and the limiting groove of the lower top cylinder are aligned with each other, the upper top cylinder can slide on the limiting groove of the lower top cylinder. When the upper top cylinder and the lower top cylinder slide to the jacking height, the limiting protrusion is rotated between the two first limiting rings so that the limiting protrusion is stuck between the two first limiting rings, thereby misaligning the limiting protrusion and the limiting groove, and completing the jacking height setting between the upper top cylinder and the lower top cylinder. Adjustment can be achieved by only rotating axial movement, which is convenient for adjustment. At the same time, the lifting height can be determined by the position of the first limiting ring exposed from the upper cylinder on the lower cylinder, thereby facilitating the determination of the lifting height, and the structure is simple.

[0008] Furthermore, the first limiting device includes two limiting rings, and the limiting rings are provided with four limiting protrusions evenly spaced along the circumferential direction.

[0009] With the above arrangement, two limit rings can form a cavity for the groove ring to rotate, thereby preventing the problem of inconvenience in alignment caused by the provision of multiple limit rings. By evenly arranging four limit protrusions in the circumferential direction, the stability of the limit ring during rotation and under external force can be ensured, so that the load is evenly distributed to each limit protrusion, thereby enhancing stability and extending service life.

[0010] Furthermore, the first limiting ring is provided with four limiting grooves evenly spaced along the circumferential direction.

[0011] In the above arrangement, the groove ring is provided with four limiting grooves which can cooperate with the limiting protrusions, and can accurately control the moving range of the limiting protrusions. When the limiting protrusions and the limiting grooves are staggered, the upper ejector tube and the lower ejector tube cannot move, thereby ensuring the stability of the tooling.

[0012] Furthermore, the spacing between the two first limiting rings along the axial direction of the lower cylinder is 5 mm.

[0013] With the above settings, through the precise spacing of the first limiting rings, when multiple tooling are needed to lift the same equipment during the lifting process, the number of groove rings of the upper lifting cylinder extending out of the lower lifting cylinder can be used to ensure that multiple tooling are at the same lifting height.

[0014] Furthermore, the cross-sectional area of the limiting groove is larger than the cross-sectional area of the limiting protrusion.

[0015] With the above settings, the limiting groove allows the limiting protrusion to move, enabling the upper lifting cylinder to extend into and move between the lower lifting cylinders. When the limiting groove and the limiting protrusion are misaligned, the setting of the lifting height is completed.

[0016] Furthermore, the upper lifting cylinder is provided with an upper support, and the lower lifting cylinder is provided with a lower support.

[0017] With the above settings, through the settings of the upper support and the lower support, the contact area between the upper lifting cylinder and the lower one and the equipment during the lifting process can be increased, and the pressure borne can be more evenly distributed, avoiding tilting caused by uneven force.

[0018] Furthermore, the lower lifting cylinder is of a cylindrical structure, and scale lines are provided along the axial direction of the lower lifting cylinder at the position where the first limiting ring is provided.

[0019] With the above settings, the cylindrical structure can evenly disperse the external pressure, enhance the overall rigidity, effectively prevent deformation, thereby improving the overall stability. By providing scale lines along the axial direction of the lower cylinder, it is convenient to determine the lifting height.

[0020] Furthermore, the axes of the upper lifting cylinder and the lower lifting cylinder are aligned.

[0021] With the above settings, when the axes of the upper lifting cylinder and the lower lifting cylinder are aligned, it can ensure the alignment of the upper lifting cylinder and the lower lifting cylinder in the vertical direction, helping to reduce the uneven force caused by the axis offset, thereby improving the stability of the overall structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present utility model.

[0023] Figure 2 It is a front view of the lower lifting cylinder of the present utility model.

[0024] Figure 3 It is a top view of the lower lifting cylinder of the present utility model.

[0025] Figure 4 It is a cross-sectional view of the upper lifting cylinder of the present utility model.

[0026] Figure 5 It is Figure 4 an enlarged view of part A in

[0027] Figure 6 This is the upward view of the upper top cylinder in the present utility model.

[0028] Figure 7 This is the assembly perspective view of the upper cylinder body and the lower cylinder body in the present utility model.

[0029] Explanation of the reference numerals in the attached drawings: 1 - upper top cylinder; 11 - upper support; 12 - limiting ring; 121 - limiting protrusion; 122 - cavity; 2 - lower top cylinder; 21 - lower support; 22 - first limiting ring; 221 - limiting groove. Detailed implementation manner

[0030] As Figures 1-6 shown, a multi - level height - adjustable top cylinder tooling for a crane includes an upper top cylinder 1 and a lower top cylinder 2. The upper top cylinder 1 is hollow - provided and sleeved outside the lower top cylinder 2. A first limiting device is provided at the bottom of the upper top cylinder 1. The first limiting device includes more than one limiting ring 12. More than one limiting ring 12 is arranged at intervals along the axial direction of the upper top cylinder 1. The limiting ring 12 is provided with limiting protrusions 121 at intervals along the circumferential direction of the inner side wall of the upper top cylinder 1. The lower top cylinder 2 is provided with more than two second limiting devices. The second limiting device includes more than two first limiting rings 22 arranged at intervals along the axial direction of the lower top cylinder 2. The first limiting ring 22 is provided with more than two limiting grooves 221 arranged at intervals along the circumferential direction of the lower top cylinder 2. A cavity 122 for the first limiting ring 22 to rotate is provided between the two limiting rings 12. The upper top cylinder 1 and the lower top cylinder 2 are rotatably connected through the cavity 122, and the upper top cylinder 1 and the lower top cylinder 2 are slidably connected through the limiting grooves 221. The upper top cylinder 1 is provided with a limiting ring 12, and the limiting ring 12 is provided with a limiting protrusion 121. The lower top cylinder 2 is provided with a first limiting ring 22, and the first limiting ring 22 is provided with a limiting groove 221. By fitting the limiting protrusion 121 of the upper top cylinder 1 and the limiting groove 221 of the lower top cylinder 2, the upper top cylinder 1 can slide between the lower top cylinders 2. When the upper top cylinder 1 slides on the lower top cylinder 2 and reaches the jacking height, a cavity 122 for the first limiting ring 22 to rotate is provided between the two limiting rings 12. Rotate the upper top cylinder 1 to misalign the limiting protrusion 121 and the limiting groove 221, so that the limiting protrusion 121 rotates between two first limiting rings 22 along the axial direction of the lower cylinder body 2 between the two limiting grooves 221, and the limiting protrusion 121 is restricted between the two first limiting rings 22, thus completing the setting of the jacking height between the upper top cylinder 1 and the lower top cylinder 2.

[0031] As Figure 1 shown, the cylinder body of the lower top cylinder 2 is of a cylindrical structure. The cylindrical structure can evenly disperse the external pressure, enhance the overall rigidity, effectively prevent deformation, and thus improve the overall stability.

[0032] The axes of the upper top tube 1 and the lower top tube 2 are consistent. When the axes of the upper top tube 1 and the lower top tube 2 are consistent, the vertical alignment of the upper top tube 1 and the lower top tube 2 can be ensured, which helps to reduce the uneven force caused by the axis deviation, thereby improving the stability of the overall structure.

[0033] like Figures 2-3 As shown, the first limiting ring 22 is evenly provided with four limiting grooves 221 along the circumferential direction of the lower cylinder 2. Figures 4-6 As shown, the first limiting device includes two limiting rings 12, and the limiting rings 12 are evenly provided with four limiting protrusions 121 along the circumferential direction. The two limiting rings 12 can form a cavity 122 for the first limiting ring 22 to rotate. By evenly providing four limiting protrusions 121 in the circumferential direction, the stability of the limiting ring 12 when rotating and bearing external force can be ensured, so that the load is evenly distributed on each limiting protrusion 121, thereby enhancing stability and extending service life. Figure 7 As shown, the inner walls of the two limiting grooves 221 form an angle A with the center of the lower cylinder 2 . In this embodiment, A is 45 degrees, so that the four limiting grooves 221 and the first limiting ring 22 are evenly spaced and distributed on the lower cylinder 2 .

[0034] When the limiting protrusion 121 is rotated to the position of the limiting groove 221, the limiting protrusion 121 can move in the limiting groove 221 along the axial direction, and then the upper cylinder 1 is rotated so that the limiting protrusion 121 is positioned between the two first limiting rings 22, and the cross-sectional size of the limiting protrusion 221 is matched with the cross-sectional size of the first limiting ring 22, so that the limiting protrusion 221 is stuck in the first limiting ring 22, so that it can cooperate with the limiting protrusion 121, and the moving range of the limiting protrusion 121 can be accurately controlled. When the limiting protrusion 121 and the limiting groove 221 are staggered, the upper top cylinder 1 and the lower top cylinder 2 cannot move, thereby ensuring the stability of the tooling.

[0035] The spacing between the two first limit rings 22 on the axial defense line of the lower cylinder is 5 mm. Through the precise spacing of the first limit rings 22, when multiple tools are needed to jack up the same equipment during the jacking process, the number of groove rings 22 extending from the upper cylinder 1 by the lower cylinder 2 can ensure that multiple tools are at the same jacking height. The position where the first limit ring 22 is provided on the lower cylinder 2 is provided with a scale line along the axial direction of the lower cylinder 2 (not shown in the figure).

[0036] The limiting groove 221 allows the limiting protrusion 121 to move, so that the upper top tube 1 can extend into the lower top tube 2 for movement. When the limiting groove 221 and the limiting protrusion 121 are misaligned, the setting of the lifting height is completed.

[0037] The upper top cylinder 1 is provided with an upper support 11, and the lower top cylinder 2 is provided with a lower support 21. Through the arrangement of the upper support 11 and the lower support 21, the contact area between the upper top cylinder 1 and the lower top and the equipment during the jacking process can be increased, the bearing pressure can be more evenly distributed, and the tilting caused by uneven force can be avoided.

[0038] The working principle of the utility model is as follows: when the jack or other lifting device lifts the equipment to the required height, the lower top cylinder 2 is placed at the bottom of the lifted equipment, the lower top cylinder 2 is provided with a groove ring 22, the groove ring 22 is provided with a limiting groove 221, the upper top cylinder 1 is provided with a limiting ring 12, and the limiting ring 12 is provided with a limiting protrusion 121. At this time, when the upper top cylinder 1 is rotated to make the position of the limiting protrusion 121 consistent with the limiting groove 221, the upper top cylinder 1 is pushed into the lower top cylinder 2. When the required height is reached, the upper top cylinder 1 is rotated to make the limiting protrusion 121 and the limiting groove 221 completely staggered, completing the fixation between the upper top cylinder 1 and the lower top cylinder 2, and the jack is slowly dropped. The equipment contacts the upper support 11 of the upper top cylinder 1, and the upper top cylinder 1 and the lower top cylinder 2 are subjected to force to complete the auxiliary support of the equipment.

[0039] After the lifting is completed, the limiting protrusion 121 and the limiting groove 221 are matched, and the upper top tube 1 is moved out to complete the separation of the upper top tube 1 and the lower top tube 2.

Claims

1. A multi-level height-adjustable top cylinder tooling for a crane, characterized in that: It includes an upper top cylinder and a lower top cylinder, the upper top cylinder is sleeved on the outside of the lower fixed cylinder, and a first limiting device is arranged at the bottom of the upper top cylinder, the first limiting device includes one or more limiting rings, and the one or more limiting rings are arranged at intervals along the axial direction of the upper top cylinder, and the limiting rings are arranged with two or more limiting protrusions at intervals along the circumferential direction of the upper cylinder, and the lower top cylinder is provided with two or more second limiting devices, the second limiting device includes two or more first limiting rings, and the two or more first limiting rings are arranged at intervals along the axial direction of the upper cylinder, and the first limiting ring is provided with two or more limiting grooves at intervals along the circumferential direction of the lower cylinder, the limiting protrusion is stuck between the two first limiting rings, and the upper top cylinder and the lower top cylinder are slidably connected through the limiting grooves.

2. The multi-level height-adjustable top cylinder tooling for a crane according to claim 1, characterized in that: The first limiting device includes two limiting rings, and the limiting rings are provided with four limiting protrusions evenly spaced along the circumferential direction.

3. The multi-level height-adjustable top cylinder tooling for a crane according to claim 1, characterized in that: The first limiting ring is provided with four limiting grooves evenly spaced along the circumferential direction.

4. The multi-level height-adjustable top cylinder tooling for a crane according to claim 1, characterized in that: The distance between the two first limiting rings along the axial direction of the lower cylinder is 5 mm.

5. The multi-level height-adjustable top cylinder tooling for a crane according to claim 1, characterized in that: The cross-sectional area of ​​the limiting groove is greater than the cross-sectional area of ​​the limiting protrusion.

6. The multi-level height-adjustable top cylinder tooling for a crane according to claim 1, characterized in that: The upper top cylinder is provided with an upper support, and the lower top cylinder is provided with a lower support.

7. The multi-level height-adjustable top cylinder tooling for a crane according to claim 1, characterized in that: The lower top cylinder is a cylindrical structure, and a scale line is arranged along the axial direction of the lower top cylinder at the position where the first limiting ring is arranged on the lower top cylinder.

8. The multi-level height-adjustable top cylinder tooling for a crane according to claim 1, characterized in that: The upper top cylinder and the lower top cylinder have the same axis.

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