Hydraulic lifting device special for electromagnetic chuck

Abstract

The utility model discloses a special hydraulic lifting device for an electromagnetic chuck, which comprises a base, and a group of racks, a hydraulic oil cylinder, a chain wheel, a chain wheel shaft, an adjusting pull rod, a chain and a synchronous gear are respectively mounted on the base; the racks are symmetrically arranged on the two sides of the surface of the base, the bottoms of the racks are connected with push rod heads of the hydraulic oil cylinders, and the bottom ends are meshed with synchronous gears connected through synchronous shafts. Two ends of the connecting shaft are respectively connected with the bottom ends of the adjusting pull rods; and the other end of the chain bypasses the chain wheel and then is connected with the top of the electromagnetic chuck. According to the utility model, the double hydraulic oil cylinders are adopted, and the two oil cylinders are synchronously stretched out and drawn back through the synchronizing mechanism, so that the two lifting points on the electromagnetic chuck are driven to synchronously lift through the chain wheel and chain mechanism, the lifting adjustment of the distance between the electromagnetic chuck and the lifting beam is realized, more flexible combined lifting operation can be realized, and the lifting device is small in size and convenient to operate. The self-weight is light, the structure is simple and maintenance is easy.

Description

Technical Field

[0001] This utility model belongs to the field of hydraulic equipment, specifically a hydraulic lifting device for electromagnetic chucks. Background Technology

[0002] Electromagnetic chucks are a commonly used material handling tool in industrial fields. When multiple electromagnetic chucks need to be used simultaneously during hoisting operations, the conventional practice is to fix several electromagnetic chucks to a dedicated lifting beam via chains, thereby enabling simultaneous lifting and hoisting operations. In this fixing method, one end of the chain is connected to the electromagnetic chuck, and the other end is connected to the lifting beam, thus creating a relatively fixed positional relationship between the lifting beam, chain, and electromagnetic chuck. The distance between the lifting beam and the electromagnetic chuck cannot be actively adjusted.

[0003] However, in the actual use of electromagnetic chucks, some working conditions require changing the overall height of the electromagnetic chuck lifting beam. For example, when the electromagnetic chuck is extended during loading and unloading, the overall height of the electromagnetic chuck lifting beam is relatively high; when moving, the electromagnetic chuck needs to be retracted to lower the overall height of the electromagnetic chuck lifting beam so as to pass through some situations with small clearance heights. As mentioned above, the existing technology has the problem that the distance between the lifting beam and the electromagnetic chuck cannot be actively adjusted. Utility Model Content

[0004] Based on the above, the purpose of this utility model is to provide a special hydraulic lifting device for electromagnetic chucks, which can realize the lifting and adjustment of the distance between the electromagnetic chuck and the lifting beam, so as to achieve more flexible lifting operations and expand the application range of electromagnetic chucks.

[0005] To achieve its purpose, this utility model adopts the following technical solution:

[0006] A hydraulic lifting device for electromagnetic chucks includes a base, on which a set of racks, hydraulic cylinders, sprockets, sprocket shafts, adjusting rods, chains, and synchronous gears are respectively installed.

[0007] A set of racks is symmetrically arranged on the left and right sides of the base surface. The bottom of the rack is connected to the hydraulic cylinder push rod head, and the bottom end meshes with the synchronous gear. The two synchronous gears are fixed to the base through the synchronous shaft. A connecting shaft is provided through the head of the hydraulic cylinder push rod, and the two ends of the connecting shaft are respectively connected to the bottom end of the adjusting rod. A set of sprockets is fixed to both sides of the base through two sprocket shafts. A chain is provided on the outer circumference of the sprocket. One end of the chain is connected to the top of the adjusting rod, and the other end of the chain is connected to the top of the electromagnetic chuck.

[0008] As a further improvement to the technical solution of this utility model, the adjusting rod is provided with a fixing nut and a screw, and the length of the adjusting rod can be adjusted by rotating the screw.

[0009] Furthermore, the top of the electromagnetic chuck is provided with a set of lifting lugs, and the other end of the chain is connected to the lifting lugs of the electromagnetic chuck.

[0010] Furthermore, the connecting flange of the hydraulic cylinder is fixed to the base by bolts.

[0011] The beneficial effects of this utility model are as follows:

[0012] This utility model provides a dedicated hydraulic lifting device for electromagnetic chucks. It employs a dual hydraulic cylinder layout and a mechanical synchronization mechanism to synchronize the extension and retraction of the two cylinders. This, in turn, drives the two lifting points on the electromagnetic chuck to move up and down synchronously via a sprocket and chain mechanism. Therefore, this utility model device enables adjustable height between the electromagnetic chuck and the mechanical lifting beam, allowing for more flexible combined lifting operations of the electromagnetic chuck and lifting beam, and further expanding the application range of the electromagnetic chuck. It is compact, lightweight, and has a simple structure that is easy to maintain. Attached Figure Description

[0013] Figure 1 This is an assembly diagram of the extended chain state of the hydraulic lifting device for the electromagnetic chuck of this utility model;

[0014] Figure 2 This is an assembly diagram of the chain retracted state of the hydraulic lifting device for the electromagnetic chuck of this utility model;

[0015] Figure 3 This is a side view assembly drawing of the hydraulic lifting device for electromagnetic chucks of this utility model;

[0016] Figure 4 This is a schematic diagram of the adjusting rod.

[0017] Reference numerals in the attached diagram: 1. Base; 2. Rack; 3. Hydraulic cylinder; 4. Sprocket; 5. Sprocket shaft; 6. Adjusting rod; 6.1. Fixing nut; 6.2. Screw; 7. Chain; 8. Synchronous gear; 9. Synchronous shaft; 10. Connecting shaft; 11. Electromagnetic chuck. Detailed Implementation

[0018] The composition and working process of the electromagnetic chuck-specific hydraulic lifting device of this utility model will be described in detail below with reference to the accompanying drawings.

[0019] This utility model provides a hydraulic lifting device for electromagnetic chucks, comprising a base 1, on which a set of racks 2, a hydraulic cylinder 3, sprockets 4, sprocket shafts 5, an adjusting rod 6, a chain 7, and a synchronous gear 8 are respectively installed. The set of racks 2 are symmetrically arranged on the left and right sides of the surface of the base 1. The bottom of the racks 2 is connected to the push rod head of the hydraulic cylinder 3, and the bottom end meshes with the synchronous gear 8. The two synchronous gears 8 are fixed to the base 1 by a synchronous shaft 9. A connecting shaft 10 is provided through the push rod head of the set of hydraulic cylinders 3, and the two ends of the connecting shaft 10 are respectively connected to the bottom end of the adjusting rod 6. The set of sprockets 4 are fixed to the two sides of the base 1 by two sprocket shafts 5. A chain 6 is provided on the outer periphery of the sprockets 4. One end of the chain 6 is connected to the top end of the adjusting rod 6, and the other end of the chain 6 is connected to the top of the electromagnetic chuck 11.

[0020] Specifically, the adjusting rod 6 is equipped with a fixing nut 6.1 and a screw 6.2. The length of the adjusting rod 6 can be adjusted by rotating the screw.

[0021] Specifically, the top of the electromagnetic chuck 11 is provided with a set of lifting lugs, and the other end of the chain 6 is connected to the lifting lugs of the electromagnetic chuck 11.

[0022] Specifically, the connecting flange of the hydraulic cylinder 3 is fixed to the base 1 by bolts.

[0023] The operation process of this utility model device is as follows:

[0024] Two hydraulic cylinders 3 are fixed to the base 1 via connecting flanges. When the hydraulic rods of the two hydraulic cylinders 3 extend or retract, since the hydraulic rods of the two hydraulic cylinders 3 are respectively connected to racks 2, and the two racks 2 respectively mesh with two synchronous gears 8, and the two synchronous gears 8 are connected by a synchronous shaft 9, the two synchronous gears 8 operate synchronously, and therefore the two racks 2 also operate synchronously, thus ensuring that the two hydraulic cylinders 3 extend and retract synchronously.

[0025] Two hydraulic cylinders 3 are connected to the lower ends of two adjusting rods 6 via a connecting shaft 10. The adjusting rods 6 have threaded holes and screws; rotating the screws adjusts the length of the adjusting rods 6. Before the hydraulic cylinders 3 actuate, adjusting the length of the adjusting rods 6 keeps the electromagnetic chuck 11 horizontal. Then, when the two hydraulic cylinders 3 extend and retract synchronously, the two adjusting rods 6 also move up and down synchronously, thereby driving the electromagnetic chuck 11 to move horizontally and synchronously up and down via two sets of sprockets 4 and chains 7.

Claims

1. A hydraulic lifting device specifically for electromagnetic chucks, characterized in that, Includes a base (1), on which a set of racks (2), hydraulic cylinders (3), sprockets (4), sprocket shafts (5), adjusting rods (6), chains (7) and synchronizing gears (8) are respectively installed; The set of racks (2) are symmetrically arranged on the left and right sides of the base (1). The bottom of the rack (2) is connected to the push rod head of the hydraulic cylinder (3), and the bottom end is meshed with the synchronous gear (8). The two synchronous gears (8) are fixed on the base (1) through the synchronous shaft (9). The push rod head of the set of hydraulic cylinders (3) is provided with a connecting shaft (10). The two ends of the connecting shaft (10) are respectively connected to the bottom end of the adjusting rod (6). The set of sprockets (4) are fixed on both sides of the base (1) through two sprocket shafts (5). The outer circumference of the sprocket (4) is provided with a chain (7). One end of the chain (7) is connected to the top of the adjusting rod (6), and the other end of the chain (7) is connected to the top of the electromagnetic chuck (11).

2. The hydraulic lifting device for electromagnetic chucks as described in claim 1, characterized in that, The adjusting rod (6) is equipped with a fixing nut (6.1) and a screw (6.2). The length of the adjusting rod (6) can be adjusted by rotating the screw.

3. The hydraulic lifting device for electromagnetic chucks as described in claim 1, characterized in that, The top of the electromagnetic chuck (11) is provided with a set of lifting lugs, and the other end of the chain (7) is connected to the lifting lugs of the electromagnetic chuck (11).

4. A hydraulic lifting device for electromagnetic chucks as described in any one of claims 1-3, characterized in that, The connecting flange of the hydraulic cylinder (3) is fixed to the base (1) by bolts.

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