Hoisting device for reducing water conservancy pipeline
By designing the combination of suspension frames, jaws, pulleys and retainers, the problem of the inability to lift variable-diameter water conservancy pipelines in the prior art is solved, and the stable lifting of equal-diameter and variable-diameter pipes is achieved, which expands the application scope and improves the Safety and convenience.
Patent Information
- Application Number
- CN202422756515.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-13
- Publication Date
- 2024-12-24
- Estimated Expiration
- 2034-11-13
AI Technical Summary
The prior art cannot effectively lift variable-diameter water conservancy pipelines because traditional pipeline hoisting fixtures cannot adapt to pipelines of different pipe diameters, resulting in unstable clamping.
A hoister including a suspension frame, jaw, an outer pulley, an inner pulley and a retainer is designed. By independently controlling the first and second rope bodies, the arc-shaped structure and maintenance of the jaws are automatically adapted to different pipe diameters. The device ensures clamping stability and safety.
It realizes stable lifting of equal diameter and variable diameter pipes, expands the scope of application, improves safety and convenience of use, and is simple to make and low cost.
Smart Images
Figure CN222225754U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of auxiliary installation of water conservancy pipelines, and in particular relates to a hoisting device for variable-diameter water conservancy pipelines. Background Art
[0002] The Chinese patent with publication number CN214326906U discloses a pipe hoisting clamp, which includes two clamps. The top ends of the two clamps will automatically retract when pulled by a wire rope to generate clamping force, thereby achieving pipe hoisting. However, since the two clamps are connected by a connecting rod to achieve linkage, they can only be used to clamp equal-diameter pipes. For variable-diameter pipes (i.e., pipes with different diameters at both ends), the use of this clamp will inevitably result in one clamp clamping the large-diameter section while the other clamp cannot clamp the small-diameter section. Utility Model Content
[0003] The utility model aims to provide a hoisting device for variable-diameter water conservancy pipelines, which can meet the hoisting requirements of equal-diameter pipelines and variable-diameter pipelines.
[0004] In order to achieve the above-mentioned purpose, the utility model provides the following technical solution: a hoist for a variable-diameter hydraulic pipeline, comprising:
[0005] Suspension rack,
[0006] A clamping claw, wherein two clamping claws are provided and respectively installed at two ends of the suspension frame, and the clamping claw has two hinged and symmetrically installed claw bodies, and the top ends of the two hinged claw bodies are connected to the first rope body;
[0007] An outer pulley, two of which are provided and symmetrically installed above the suspension frame;
[0008] An inner pulley, two outer pulleys are provided and are symmetrically mounted above the suspension frame; the inner pulley is closer to the center of the suspension frame than the outer pulley;
[0009] The second rope body has two ends which are respectively passed around the bottom of the inner pulley and the top of the outer pulley in sequence and then connected to the middle part of the first rope body.
[0010] Furthermore, the clamping portion of the claw body is an arc-shaped structure, a connecting pin is provided on the top of the structure, and the first rope body is connected to the connecting pins on the top of the two claw bodies in a ring sleeve manner.
[0011] Furthermore, an arc-shaped plate is arranged inside the arc-shaped structure, and the width of the arc-shaped plate is greater than the width of the arc-shaped structure.
[0012] Furthermore, a retainer is included, and the retainer can keep each of the clamping jaws in a clamped / opened state.
[0013] Furthermore, the retainer includes a retaining rod and a bolt assembly, the claw body is provided with a limiting axis, the retaining rod is provided with two and each is provided with a long groove, the bolt assembly passes through the long grooves of the two retaining rods to fix the retaining rods so that the bolt assembly abuts against the corresponding limiting axis to form a limit.
[0014] Furthermore, the top surface of the suspension frame is provided with outer columns and inner columns, the outer columns are provided with two groups to respectively install the outer pulleys, and the inner columns are provided with two groups to respectively install the inner pulleys.
[0015] Furthermore, a first reinforcing rib is provided between the outer column and the inner column located on the same side, and a second reinforcing rib is provided between the two groups of inner columns.
[0016] Furthermore, it also includes an anti-bending shaft which also serves as a pivot, the anti-bending shaft passes through both ends of the suspension frame, and the two claw bodies of the clamp are coaxially mounted on the anti-bending shaft.
[0017] Furthermore, the end of the second rope body is perpendicular to the top surface of the suspension frame after being straightened.
[0018] Compared with the prior art, the beneficial effects of the utility model are:
[0019] 1. The two clamping jaws in the utility model are independently controlled by the first rope body and the second rope body, so that they can automatically adapt to pipes of different diameters, especially pipes with variable diameters, thereby expanding the scope of application.
[0020] 2. The outer pulley in the utility model can make the end of the second rope body pull the first rope body in a vertical state, so that the clamping claw will not be subjected to tension in other directions but only to vertical tension, avoiding lateral bending deformation.
[0021] 3. The retainer in the utility model can limit the opening and closing angles of the clamping jaws in two states, thereby improving safety during use.
[0022] 4. The utility model is simple to manufacture, made of common materials, low in cost, easy to use, simple to operate, and has high application value. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] Figure 1 This is a structural stereogram of a preferred embodiment of the utility model in a clamping state;
[0024] Figure 2 for Figure 1 A partial enlarged view of the middle A;
[0025] Figure 3 for Figure 1 A partial enlarged view of point B in the middle;
[0026] Figure 4 for Figure 1 A right side view of the structure of the illustrated embodiment;
[0027] Figure 5 for Figure 4 Structural cross-section view in CC direction;
[0028] Figure 6 This is a structural stereogram of a preferred embodiment of the utility model in an open state.
[0029] Figure numerals: 1. suspension frame; 1.1 outer column; 1.2. inner column; 1.3. first reinforcing rib; 1.4. second reinforcing rib; 2. clamping claw; 2.1. arc-shaped structure; 2.2. arc-shaped plate; 2.3. connecting pin; 2.4. limiting shaft; 3. first rope body; 4. outer pulley; 5. inner pulley; 6. second rope body; 7. anti-bending shaft; 8. pipeline; 9. retaining rod; 9.1. long groove; 10. bolt assembly. DETAILED DESCRIPTION
[0030] The technical solutions in the embodiments of the utility model are described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0031] like Figures 1 to 6 As shown, the utility model provides a hoisting device for variable-diameter water conservancy pipelines, comprising a suspension frame 1, a clamping claw 2, an outer pulley 4, an inner pulley 5 and a second rope body 6.
[0032] The suspension frame 1 is welded from H-shaped steel of model H100×100×6×8 or square hollow steel of model 100×100×6, with an overall length of 3700 mm and a width of 400 mm.
[0033] As a preferred example, the top surface of the suspension frame 1 is provided with an outer column 1.1 and an inner column 1.2, and both the outer column 1.1 and the inner column 1.2 are made of 100×50×5 rectangular hollow steel. The height of the outer column 1.1 is greater than the height of the inner column 1.2. The outer column 1.1 is provided with two groups to respectively install the outer pulley 4, and the inner column 1.2 is provided with two groups to respectively install the inner pulley 5. Obviously, the two outer pulleys 4 and the two inner pulleys 5 are symmetrically distributed.
[0034] The two ends of the suspension frame 1 are provided with pivots, and two clamping jaws 2 are respectively installed on the pivots. The clamping jaw 2 has two claw bodies symmetrically installed by hinged pivots, and the top ends of the two hinged claw bodies are connected with the first rope body 3.
[0035] The two ends of the second rope body 6 are connected to the middle part of the first rope body 3 after passing through the bottom of the inner pulley 5 and the top of the outer pulley 4 in turn. Obviously, the middle part of the second rope body 6, that is, the part between the inner pulleys 5, is used to connect the hook. When the hook hooks the second rope body 6 and lifts it upward, the second rope body 6 will pull the first rope body 3, thereby driving the two claws to be in a clamping state. The opening of the claw body of the clamp 2 can be achieved by manual pulling or by connecting a tension spring at its top. After the claw body contacts the pipe 8, the tension of the second rope body 6 and the first rope body 3 is reduced, and the claw body can be opened under the action of the tension spring or manual pulling and lowered to both sides of the pipe 8 to achieve subsequent clamping.
[0036] As a preferred example, the clamping part of the claw body is an arc-shaped structure 2.1, and a connecting pin 2.3 is arranged on the top thereof. The first rope body 3 is connected to the connecting pins 2.3 on the top of the two claw bodies in a loop manner. "Loop" means that the first rope body 3 is connected to form a circle at the end, so as to achieve a sleeve connection with the connecting pin 2.3. The curvature and length of the arc-shaped structure 2.1 must meet the requirement that when the clamp 2 is in the clamping state, the end of the arc-shaped structure 2.1 is higher than the bottom edge of the clamped pipe. Preferably, the height difference H between the two is 10 cm, so that when the clamp is in the open state after being hoisted into place, the claw body can open outward to detach smoothly from the pipe 8.
[0037] As a preferred example, an arc plate 2.2 is provided inside the arc structure 2.1, and the width of the arc plate 2.2 is greater than the width of the arc structure 2.1. The arc plate 2.2 serves to increase the contact area with the pipe 8, thereby improving the clamping stability. As a preferred example, a rubber plate can also be provided on the inner wall of the arc plate 2.2 to avoid damaging the pipe 8.
[0038] As a preferred example, in order to improve the safety of the clamping jaws in the two states, the hoisting device further includes a retainer, which can keep each clamping jaw 2 in a clamped / opened state.
[0039] As a preferred example, the retainer includes a retaining rod 9 and a bolt assembly 10, the claw body is provided with a limit axis 2.4, the retaining rod 9 is provided with two and each is provided with a long groove 9.1, and the bolt assembly 10 passes through the long grooves 9.1 of the two retaining rods 9 to fix the retaining rod 9 so that the bolt assembly 10 abuts against the corresponding limit axis 2.4 to form a limit. When the retainer of this structure is in use, when the clamping jaw 2 clamps pipes 8 of different diameters, the center distances of the limit axes 2.4 on the two claw bodies are different, so the bolt assembly 10 can change the position in the long groove 9.1 to constrain the limit axis 2.4, prevent the claw body from opening outward or retracting inward, and improve safety.
[0040] As a preferred example, in order to improve the ability of the columns to withstand the force when the outer pulley 4 and the inner pulley 5 are pulled by the second rope body 6, a first reinforcing rib 1.3 is provided between the outer column 1.1 and the inner column 1.2 on the same side, and a second reinforcing rib 1.4 is provided between the two groups of inner columns 1.2. The first reinforcing rib 1.3 and the second reinforcing rib 1.4 are both fixed by welding.
[0041] As a preferred example, in order to improve the bending resistance of the suspension frame 1, the present hoist also includes an anti-bending shaft 7 which also serves as a pivot. That is, the anti-bending shaft 7 is installed through both ends of the suspension frame 1, and the two claws of the clamp 2 are coaxially installed on the anti-bending shaft 7.
[0042] As a preferred example, in order to make the top of the claw body only receive the upward traction force of the first rope body 3 to avoid lateral bending, the end of the second rope body 6 is straightened and perpendicular to the top surface of the suspension frame 1. In other words, the setting position of the outer pulley 4 needs to be determined according to the end state of the second rope body 6.
[0043] When grabbing the pipe 8, the hook of the crane is connected to the second rope body 6 and the hoist is transferred to the top of the pipe 8, and then gradually descends to the height where the clamp 2 contacts the surface of the pipe 8. At this time, due to the support of the pipe 8, the traction of the second rope body 6 is reduced, and the on-site personnel can open the claw body outward to make the hoist automatically fall. After the claw body reaches the appropriate position, the hook is controlled to rise, the second rope body 6 is tightened and pulls the first rope body 3, so that it pulls the top of the claw body so that the arc plate 2.2 clamps the outer wall of the pipe 8, and the clamp 2 is in a clamping state. When the pipe 8 moves to the specified position, the hook is lowered until the pipe 8 touches the ground. At this time, the claw body is opened again under the operation of the on-site personnel. In order to prevent the clamp 2 from returning to the clamping state when the hoist is raised, the retainer 9 is used to keep the two claws in the open state. Then the hoist can be lifted and removed to complete the lifting operation of the pipe 8.
[0044] It should be noted that, when the hoist descends and releases the pipe 8 , the outer wall of the upper part of the pipe 8 will contact the inner side of the claw body and push it to both sides, which also plays a role in assisting the opening of the clamping jaws 2 .
[0045] Since the clamping jaws 2 clamp the pipes 8 respectively, the clamping purpose can be achieved for pipes of equal diameter or pipes of variable diameter, and the application is more extensive.
[0046] The matters not described in detail in the present invention are all known technologies to those skilled in the art.
[0047] It should be noted that the above specific implementation methods are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model is described in detail with reference to the embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified and replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.
Claims
1. A hoisting device for a variable diameter hydraulic pipeline, characterized in that: include: Suspension bracket (1), A clamping claw (2), wherein two clamping claws (2) are provided and are respectively mounted at two ends of the suspension frame (1), and the clamping claw (2) comprises two hinged and symmetrically mounted claw bodies, and the top ends of the two hinged claw bodies are connected to a first rope body (3); An outer pulley (4), wherein two outer pulleys (4) are provided and are symmetrically mounted above the suspension frame (1); An inner pulley (5), two outer pulleys (4) are provided and are symmetrically mounted above the suspension frame (1); the inner pulley (5) is closer to the center of the suspension frame (1) relative to the outer pulley (4); A second rope body (6), wherein two ends of the second rope body (6) respectively pass around the bottom of the inner pulley (5) and the top of the outer pulley (4) in sequence and then connect to the middle of the first rope body (3).
2. A hoisting device for a variable diameter hydraulic pipeline according to claim 1, characterized in that: The clamping portion of the claw body is an arc-shaped structure ( 2.1), a connecting pin (2.3) is arranged on the top of the two claw bodies, and the first rope body (3) is connected to the connecting pins (2.3) on the tops of the two claw bodies in a ring sleeve manner.
3. A hoisting device for a variable diameter hydraulic pipeline according to claim 2, characterized in that: An arc-shaped plate (2.2) is arranged on the inner side of the arc-shaped structure (2.1), and the width of the arc-shaped plate (2.2) is greater than the width of the arc-shaped structure (2.1).
4. The hoisting device for variable diameter hydraulic pipeline according to claim 1, characterized in that: Also included is a retainer capable of keeping each of the clamping jaws (2) in a clamped / opened state.
5. A hoisting device for a variable diameter hydraulic pipeline according to claim 4, characterized in that: The retainer comprises a retaining rod (9) and a bolt assembly (10); the claw body is provided with a limit axis (2.4); the retaining rod (9) is provided with two and each is provided with a long slot (9.1); the bolt assembly (10) passes through the long slots (9.1) of the two retaining rods (9) to fix the retaining rod (9) so that the bolt assembly (10) abuts against the corresponding limit axis (2.4) to form a limit.
6. A hoisting device for a variable diameter hydraulic pipeline according to claim 4, characterized in that: The top surface of the suspension frame (1) is provided with an outer column (1.1) and an inner column (1.2), the outer column (1.1) being provided with two groups for respectively mounting the outer pulleys (4), and the inner column (1.2) being provided with two groups for respectively mounting the inner pulleys (5).
7. A hoisting device for a variable diameter hydraulic pipeline according to claim 6, characterized in that: A first reinforcing rib (1.3) is provided between the outer column (1.1) and the inner column (1.2) located on the same side, and a second reinforcing rib (1.4) is provided between the two groups of inner columns (1.2).
8. The hoisting device for variable diameter hydraulic pipeline according to claim 1, characterized in that: It also includes an anti-bending shaft (7) which also serves as a pivot. The anti-bending shaft (7) passes through both ends of the suspension frame (1). The two claw bodies of the clamping claw (2) are coaxially mounted on the anti-bending shaft (7).
9. The hoisting device for variable diameter hydraulic pipeline according to claim 1, characterized in that: The end of the second rope body (6) is stretched straight and is perpendicular to the top surface of the suspension frame (1).