Large impeller clamping mechanism

Abstract

The large impeller clamping mechanism comprises a clamping frame, connecting lug plates are fixed to the upper side and the lower side of the inner ring face of the clamping frame, a hydraulic cylinder is installed in the middle of the inner side of the clamping frame, the output end of the top of the hydraulic cylinder is connected with a hydraulic push rod, and the end of the hydraulic push rod is fixedly connected with a hydraulic push rod connecting plate; the two ends of the hydraulic push rod connecting plate are connected with connecting blocks correspondingly, the other ends of the connecting blocks are connected with clamping blocks correspondingly, and pin shafts are connected between the hydraulic push rod connecting plate and the connecting blocks, between the connecting blocks and the clamping blocks and between the clamping blocks and the connecting lug plates correspondingly. The connecting arm structure composed of the hydraulic push rod connecting plate and the connecting block is arranged, by means of hydraulic control of the hydraulic cylinder, the connecting arm structure is similar to a jack to stretch or retract, the clamping block is rotated, the dismounting operation is completed, the dismounting mode is easy to operate and quick in response, and the impeller is very quick and convenient to dismount.

Description

Technical Field

[0001] The utility model relates to the technical field of clamping mechanisms for slurry pump impellers, and particularly to a large impeller clamping mechanism. Background Technique

[0002] A slurry pump is a machine that increases the energy of a solid-liquid mixed medium by means of the action of centrifugal force (rotation of the impeller of the pump), and is a device that converts electrical energy into the kinetic energy and potential energy of the medium. The impellers used in slurry pumps are relatively large, and special auxiliary mechanisms, namely clamping mechanisms, are required for installation and removal.

[0003] In the prior art, due to the excessive weight of the impeller, the installation process is inconvenient. The principle of the existing impeller clamping mechanism in the market is to push open the gripper through threaded parts to achieve the purpose of disassembling and assembling the impeller. This structure is inconvenient to operate, has a slow response, is not fast and convenient for disassembling and assembling the impeller, and is prone to aging and deformation when using threaded parts to push open the gripper.

[0004] Therefore, those skilled in the art have provided a large impeller clamping mechanism to solve the problems raised in the above background technique. Content of the Utility Model

[0005] The purpose of the utility model is to provide a large impeller clamping mechanism to solve the problems of inconvenient operation, slow response, and easy aging of the existing impeller clamping mechanism that disassembles and assembles the impeller by pushing open the gripper through threaded parts in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution:

[0007] A large impeller clamping mechanism includes: a clamping frame. Connecting ear plates are fixedly arranged on both the upper and lower sides of the inner circumferential surface of the clamping frame. A hydraulic cylinder is installed in the middle of the inner side of the clamping frame. The top output end of the hydraulic cylinder is connected with a hydraulic push rod, and the end of the hydraulic push rod is fixedly connected with a hydraulic push rod connecting plate. Connecting blocks are respectively connected to both ends of the hydraulic push rod connecting plate. The other ends of the connecting blocks are respectively connected with clamping blocks. Pins are connected between the hydraulic push rod connecting plate and the connecting blocks, between the connecting blocks and the clamping blocks, and between the clamping blocks and the connecting ear plates. A lifting ring is fixedly connected to the middle above the clamping frame.

[0008] As a solution in the utility model, a support frame is welded to the back of the clamping frame, and the bottom of the hydraulic cylinder is installed inside the support frame.

[0009] As a solution in the utility model, mounting bolts are connected between the support frame and the clamping frame, and the mounting bolts are distributed in a triangular shape.

[0010] As a solution in the present utility model, a balance tie rod is arranged below the hydraulic cylinder, and the balance tie rod is an elastic telescopic structure.

[0011] As a solution in the present utility model, the bottom end of the balance tie rod is connected to the bottom base of the hydraulic cylinder, and the top end of the balance tie rod is connected to a connecting block located below the hydraulic push rod connecting plate.

[0012] As a solution in the present utility model, the sizes of the clamping block and the connecting ear plate match each other, and a rotatable structure is formed by pins between the hydraulic push rod connecting plate and the connecting block, between the connecting block and the clamping block, and between the clamping block and the connecting ear plate.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] 1. A connecting arm structure composed of a hydraulic push rod connecting plate and a connecting block is provided. By using the hydraulic control of the hydraulic cylinder, the connecting arm structure is similar to the extension or retraction of a jack, so as to rotate the clamping block. The clamping block extends to both sides to grasp the inner side of the impeller inlet, and the clamping block retracts to the middle to release the impeller inlet. This disassembly and assembly method is simple in operation, fast in response, and very quick and convenient when disassembling and assembling the impeller.

[0015] 2. A balance tie rod is equipped. With the elastic telescopic performance of the balance tie rod, the stability of the above-mentioned connecting arm structure is maintained, so that the above-mentioned connecting arm structure can play a stable and good pulling and adjusting role on the clamping block. As the connecting arm structure changes stably, the rotation of the clamping block becomes more stable, thereby avoiding clamping damage to the impeller. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic structural diagram of a disassembled connecting member of a large impeller clamping mechanism.

[0017] Figure 2 It is a schematic overall structural diagram of a large impeller clamping mechanism.

[0018] Figure 3 It is a schematic top view structural diagram of a large impeller clamping mechanism.

[0019] Figure 4 It is a schematic side view structural diagram of a large impeller clamping mechanism.

[0020] In the figure: 1. Clamping frame; 2. Connecting ear plate; 3. Support frame; 4. Hydraulic cylinder; 5. Installation bolt; 6. Hydraulic push rod; 7. Hydraulic push rod connecting plate; 8. Balance tie rod; 9. Connecting block; 10. Clamping block; 11. Pin; 12. Hoisting ring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] 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. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0022] Please refer to Figures 1 to 4 , the embodiments of the present utility model provide a large impeller clamping mechanism, including: a clamping frame 1, connecting ear plates 2 are fixed on both the upper and lower sides of the inner circumferential surface of the clamping frame 1, and a hydraulic cylinder 4 is installed in the middle of the inner side of the clamping frame 1. A support frame 3 is welded on the back of the clamping frame 1, and the bottom of the hydraulic cylinder 4 is installed inside the support frame 3. Installation bolts 5 are connected between the support frame 3 and the clamping frame 1, and the installation bolts 5 are distributed in a triangular shape;

[0023] Specifically, the support frame 3 is used to install the hydraulic cylinder 4, so that the hydraulic cylinder 4 is stably installed and can operate smoothly and normally. The support frame 3 is assembled on the back of the clamping frame 1 by using the installation bolts 5, which is convenient for disassembly and assembly, and thus convenient for disassembling and assembling the hydraulic cylinder 4, facilitating maintenance and daily maintenance work;

[0024] The top output end of the hydraulic cylinder 4 is connected to a hydraulic push rod 6, and the end of the hydraulic push rod 6 is fixedly connected to a hydraulic push rod connecting plate 7. Connecting blocks 9 are respectively connected to both ends of the hydraulic push rod connecting plate 7. A balance pull rod 8 is arranged below the hydraulic cylinder 4, and the balance pull rod 8 is an elastic telescopic structure. The bottom end of the balance pull rod 8 is connected to the bottom base of the hydraulic cylinder 4, and the top end of the balance pull rod 8 is connected to the connecting block 9 located below the hydraulic push rod connecting plate 7;

[0025] Specifically, the balance pull rod 8 is provided to produce a balanced pulling effect on the connecting arm structure composed of the hydraulic push rod connecting plate 7 and the connecting block 9. The balance pull rod 8 has elastic telescopic ability and can maintain the stability of the above-mentioned connecting arm structure by means of its own elastic expansion and contraction, so that the above-mentioned connecting arm structure can maintain a good and effective pulling and adjusting effect on the clamping block 10, and make the rotation of the clamping block 10 more stable, thereby avoiding clamping damage to the impeller;

[0026] The other ends of the connecting blocks 9 are respectively connected to clamping blocks 10. Pin shafts 11 are connected between the hydraulic push rod connecting plate 7 and the connecting blocks 9, between the connecting blocks 9 and the clamping blocks 10, and between the clamping blocks 10 and the connecting ear plates 2. The sizes between the clamping blocks 10 and the connecting ear plates 2 match, and the pin shafts 11 between the hydraulic push rod connecting plate 7 and the connecting blocks 9, between the connecting blocks 9 and the clamping blocks 10, and between the clamping blocks 10 and the connecting ear plates 2 form a rotatable structure. A lifting ring 12 is fixedly connected to the middle of the upper part of the clamping frame 1;

[0027] Specifically, the hydraulic push rod connecting plate 7 and the connecting block 9, the connecting block 9 and the clamping block 10, and the clamping block 10 and the connecting ear plate 2 are all rotatably adjusted through the pin shaft 11. The hydraulic push rod connecting plate 7 moves following the telescopic movement of the hydraulic push rod 6, thereby pulling the connecting block 9. After the angle of the connecting block 9 is adjusted, the clamping block 10 rotates accordingly, so that the clamping block 10 can be pushed outwards or retracted inwards, thereby realizing the clamping of the impeller. This clamping method is similar to the operation mechanism of a jack, and the power comes from the hydraulic control of the hydraulic cylinder 4. The operation is simple, the response is fast, and it is also very quick and convenient to disassemble and assemble the impeller.

[0028] The working principle of the present utility model is as follows:

[0029] Assemble and connect the clamping mechanism, and install the clamping mechanism at the corresponding installation position of the equipment. When clamping the impeller, start the hydraulic cylinder 4. The hydraulic cylinder 4 uses its own hydraulic control principle to make the hydraulic push rod 6 extend, and the hydraulic push rod connecting plate 7 is pushed out. The connecting block 9 is pulled and tilted, and the clamping block 10 is pushed outwards, so that it can grasp the inner side of the impeller inlet. When disassembling the impeller, start the hydraulic cylinder 4 to make the hydraulic push rod 6 shorten, and the hydraulic push rod connecting plate 7 is retracted. The connecting block 9 pulls the clamping block 10 to retract inwards, so that the clamping block 10 will leave the inner side of the impeller inlet, and the impeller can be disassembled.

[0030] The above is only the preferred specific embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution and the inventive concept of the present utility model, makes equivalent substitutions or changes, and should be covered by the protection scope of the present utility model.

Claims

1. A large impeller clamping mechanism, characterized in that: include: A clamping frame (1), wherein connecting ear plates (2) are fixed on both upper and lower sides of the inner ring surface of the clamping frame (1), and a hydraulic cylinder (4) is installed in the middle of the inner side of the clamping frame (1), the top output end of the hydraulic cylinder (4) is connected to a hydraulic push rod (6), and the end of the hydraulic push rod (6) is fixedly connected to a hydraulic push rod connecting plate (7), both ends of the hydraulic push rod connecting plate (7) are respectively connected to a connecting block (9), and the other end of the connecting block (9) is respectively connected to a clamping block (10), and pins (11) are connected between the hydraulic push rod connecting plate (7) and the connecting block (9), between the connecting block (9) and the clamping block (10), and between the clamping block (10) and the connecting ear plate (2), and a lifting ring (12) is fixedly connected to the middle of the upper part of the clamping frame (1).

2. A large impeller clamping mechanism according to claim 1, characterized in that: A support frame (3) is welded to the back of the clamping frame (1), and the bottom of the hydraulic cylinder (4) is installed on the inner side of the support frame (3).

3. A large impeller clamping mechanism according to claim 2, characterized in that: Mounting bolts (5) are connected between the support frame (3) and the clamping frame (1), and the mounting bolts (5) are distributed in a triangular shape.

4. A large impeller clamping mechanism according to claim 1, characterized in that: A balancing rod (8) is provided below the hydraulic cylinder (4), and the balancing rod (8) is an elastic telescopic structure.

5. A large impeller clamping mechanism according to claim 4, characterized in that: The bottom end of the balancing rod (8) is connected to the bottom base of the hydraulic cylinder (4), and the top end of the balancing rod (8) is connected to a connecting block (9) located below the hydraulic push rod connecting plate (7).

6. A large impeller clamping mechanism according to claim 1, characterized in that: The dimensions of the clamping block (10) and the connecting ear plate (2) match each other, and pins (11) are provided between the hydraulic push rod connecting plate (7) and the connecting block (9), between the connecting block (9) and the clamping block (10), and between the clamping block (10) and the connecting ear plate (2) to form a rotatable structure.

Images