Hydraulic machine nut fixing device

Abstract

The utility model relates to the technical field of hydraulic machines, in particular to a hydraulic machine nut fixing device which comprises a guide rod and a plate body, the guide rod extends into the plate body and is fixedly connected with the plate body, a nut is further arranged on the guide rod, the nut is in threaded connection with the guide rod, the nut abuts against the plate body, and a fixing groove is formed in the nut. The plate body is further provided with a pressing plate, the pressing plate is provided with insertion teeth corresponding to the fixing grooves, and the insertion teeth are used for being embedded into the fixing grooves and abut against the groove walls of the fixing grooves. The nut can abut against the plate body so as to limit swing of the guide rod, the pressing plate is arranged on the plate body, the inserting teeth are arranged on the pressing plate, the fixing grooves corresponding to the inserting teeth are formed in the nut, the inserting teeth can interfere with the nut after extending into the fixing grooves, and therefore the situation that the nut is loosened in the swing process is reduced, the situation that the nut is loosened is reduced, and the service life of the nut is prolonged. The tightness of the nut is further improved, the situation that the guide rod is affected due to looseness of the nut is reduced, and the operation stability of the hydraulic machine is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic presses, and in particular to a nut fixing device for a hydraulic press. Background Art

[0002] A hydraulic press is a machine that uses liquid as the working medium and is made according to Pascal's principle to transfer energy to achieve various processes. A hydraulic press generally consists of a main body, a power system, and a hydraulic control system. It usually uses an extrusion method to process products such as metals, plastics, woods, and powders, and is used for pressing processes and compression molding processes.

[0003] To make the pressure rod move more stably during operation, a hydraulic press usually sets corresponding guide rods to guide the pressure plate and the pressure rod. In the prior art, nuts are usually set on the guide rods for fixation, and the nuts form abutment with the corresponding plate bodies to limit the sway of the guide rods. However, no reinforcement measures are taken for the nuts themselves, and the nuts are prone to loosening. Content of the Utility Model

[0004] In order to solve the problem that in the prior art, nuts are usually set on the guide rods of a hydraulic press for fixation, the nuts form abutment with the corresponding plate bodies to limit the sway of the guide rods, but no reinforcement measures are taken for the nuts themselves, and the nuts are prone to loosening, this application provides a nut fixing device for a hydraulic press, and the specific scheme is as follows.

[0005] A nut fixing device for a hydraulic press includes a guide rod and a plate body. The guide rod extends into the plate body and is fixedly connected to the plate body. A nut is further arranged on the guide rod. The nut is threadedly connected to the guide rod. The nut abuts against the plate body. A fixing groove is formed on the nut. A pressure plate is further arranged on the plate body. Insert teeth corresponding to the fixing groove are arranged on the pressure plate. The insert teeth are used for being embedded in the fixing groove and forming abutment with the groove wall of the fixing groove.

[0006] By adopting the above technical solution, a nut is arranged on the guide rod, and the nut can form abutment with the plate body to limit the sway of the guide rod. At the same time, a pressure plate is arranged on the plate body, insert teeth are arranged on the pressure plate, and a fixing groove corresponding to the insert teeth is arranged on the nut. After the insert teeth extend into the fixing groove, interference can be formed on the nut, so as to reduce the loosening of the nut during the swaying process, reduce the loosening of the nut itself, further improve the fastening degree of the nut itself, reduce the situation that the guide rod is affected due to the loosening of the nut, and further improve the operation stability of the hydraulic press.

[0007] Optionally, a plurality of the fixing grooves are arranged at equal intervals along the circumferential direction of the nut.

[0008] By adopting the above technical solution, a plurality of fixing grooves are arranged at equal circumferential intervals along the nut, so that the insertion teeth of the pressing plate can normally extend into each insertion tooth without specially adjusting the angle after the nut is rotated and fixed, improving the convenience during the installation of the nut and the pressing plate.

[0009] Optionally, the fixing grooves are triangularly arranged and the shapes and sizes of all the fixing grooves are the same.

[0010] By adopting the above technical solution, the fixing grooves are triangularly arranged, which is convenient for the insertion teeth to form interference after extending into them, can also improve the interference formed by the insertion teeth, reduce the situation of the insertion teeth coming out of the fixing grooves, and further improve the fixing effect on the nut.

[0011] Optionally, the insertion teeth are arc-shaped, and the end of the insertion tooth away from the pressing plate cannot abut against the groove wall of the fixing groove.

[0012] By adopting the above technical solution, the insertion teeth are arc-shaped, so it is less likely to form wear with the groove wall of the fixing groove when the insertion teeth extend into the fixing groove, and can also reduce the frictional damage between the insertion teeth and the nut when fixing the nut, improving the service life of the pressing plate.

[0013] Optionally, a plurality of insertion teeth are provided, and the insertion teeth are arranged in parallel along the pressing plate.

[0014] By adopting the above technical solution, by providing a plurality of insertion teeth, the plurality of insertion teeth can extend into the fixing grooves of the nut, and the plurality of insertion teeth form interference with the nut at the same time, thereby further improving the fixing effect on the nut and further reducing the loosening of the nut.

[0015] Optionally, the length of the insertion teeth near the middle of the pressing plate is shorter than that of the insertion teeth away from the middle of the pressing plate.

[0016] By adopting the above technical solution, since the nut is cylindrical, the distance between the insertion teeth on both sides of the pressing plate from the fixing groove is farther, so the closer the insertion teeth are to the middle of the pressing plate, the shorter their length, and the farther the insertion teeth are from the middle of the pressing plate, the longer their length, so that the insertion teeth at each position can extend into the corresponding fixing groove.

[0017] Optionally, waist-shaped grooves are formed on the pressing plate, bolts are arranged in the waist-shaped grooves, and the bolts pass through the waist-shaped grooves and are threadedly connected to the plate body.

[0018] By adopting the above technical solution, by forming waist-shaped grooves on the pressing plate and fixing the pressing plate to the plate body through bolts, the installation convenience of the pressing plate can be increased.

[0019] Optionally, there are two waist-shaped grooves, and the waist-shaped grooves are arranged in parallel.

[0020] By adopting the above technical solution, two parallel kidney-shaped grooves are provided, and bolts can be respectively arranged on the sides of the two kidney-shaped grooves away from each other, and the pressure plate can be fixed from two diagonal positions, which can further improve the fixing effect of the pressure plate and the stabilizing effect on the nut.

[0021] Optionally, fixing grooves are provided at both the upper and lower ends of the nut.

[0022] By adopting the above technical solution, fixing grooves are provided at both the upper and lower ends of the nut, which makes the installation of the nut more convenient and can reduce the situation where the nut cannot interfere with the inserted teeth of the pressure plate due to direction problems during installation.

[0023] Optionally, guiding inclined surfaces are provided at both the upper and lower ends of the nut.

[0024] By adopting the above technical solution, guiding inclined surfaces are provided at both the upper and lower ends, which can reduce the situation where the nut is worn due to excessive fitting with the plate body, and further improve the service life of the nut.

[0025] In summary, the present application has at least the following beneficial effects:

[0026] 1. The present application solves the problem that in the prior art, a nut is usually provided to fix the guiding rod of a hydraulic press. The nut abuts against the corresponding plate body to limit the sway of the guiding rod, but no reinforcement measures are taken for the nut itself, and the nut is prone to looseness. The present application reduces the looseness of the nut on the guiding rod by providing a pressure plate, and the inserted teeth on the pressure plate extend into the nut to form interference with the nut, thereby further reducing the looseness of the guiding rod and improving the stability of the hydraulic press.

[0027] 2. The present application also further improves the fixing effect of the inserted teeth on the nut by providing a plurality of inserted teeth and a plurality of fixing grooves, and simultaneously extending the inserted teeth into the plurality of fixing grooves, thereby further reducing the looseness of the nut during hydraulic operation and further improving the stability of the hydraulic press. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a perspective view of this embodiment.

[0029] Figure 2 is a perspective view of this embodiment, mainly used to show the situation where the nut is removed.

[0030] DESCRIPTION OF THE REFERENCE NUMERALS:

[0031] 1. Guiding rod;

[0032] 2. Plate body;

[0033] 3. Nut; 31. Fixing groove; 32. Guiding inclined surface;

[0034] 4. Pressure plate; 41. Inserted teeth; 42. Waist-shaped groove; 421. Bolt. Detailed implementation manners

[0035] The following further details the present application with reference to the accompanying drawings through specific embodiments.

[0036] A fixing device for a nut 3 of a hydraulic press, as Figure 1 shown, includes a guide rod 1 and a plate body 2. The guide rod 1 extends into the plate body 2 and is fixedly connected to the plate body 2. A nut 3 is further arranged on the guide rod 1. The nut 3 is threadedly connected to the guide rod 1 and abuts against the plate body 2. In specific implementation, the plate body 2 can be the top plate or the bottom plate of the hydraulic press. The nut 3 can be arranged on the upper side or the lower side of the plate body 2. After the nut 3 is threadedly connected to the guide rod 1 and abuts against the plate body 2, it can play a stabilizing role on the guide rod 1. The guide rod 1 extends into it, and the template fixed on the piston rod of the oil cylinder serves as the upper die. The upper die is slidably connected to the guide rod 1, and the bottom plate of the hydraulic press serves as the lower die. The upper die and the lower die cooperate with each other to press and form the product.

[0037] As Figure 1 and Figure 2 shown, a fixing groove 31 is formed on the nut 3, and a pressure plate 4 is further arranged on the plate body 2. Inserted teeth 41 corresponding to the fixing groove 31 are arranged on the pressure plate 4. The inserted teeth 41 are used to be embedded in the fixing groove 31 and abut against the groove wall of the fixing groove 31. In specific implementation, after the inserted teeth 41 extend into the fixing groove 31, the rotation of the nut 3 can be restricted, so that the rotation of the nut 3 can be restricted, thereby reducing the loosening of the nut 3.

[0038] As Figure 1 shown, a plurality of fixing grooves 31 are arranged at equal intervals along the circumferential direction of the nut 3. The fixing grooves 31 are arranged in a triangular shape and the shapes and sizes of all the fixing grooves 31 are the same. Fixing grooves 31 are arranged at both the upper and lower ends of the nut 3. In specific implementation, the nut 3 can be inserted by the corresponding inserted teeth 41 after being installed on the plate body 2 without special adjustment, so as to form a fixing effect, and both the upper and lower ends of the nut 3 can be normally installed on the plate body 2, improving the convenience of installation.

[0039] As Figure 2As shown, the pinion 41 is arranged in an arc shape, and the end of the pinion 41 away from the pressure plate 4 cannot abut against the groove wall of the fixed groove 31. There are multiple pinions 41, and the pinions 41 are arranged parallel to the pressure plate 4. The length of the pinion 41 near the middle of the pressure plate 4 is shorter than that of the pinion 41 away from the middle of the pressure plate 4. In specific implementation, this embodiment is provided with three pinions 41, wherein the middle pinion 41 is arranged at the center position of the pressure plate 4, and the pinions 41 on both sides have the same shape and size. The pinions 41 can be inserted into a plurality of corresponding fixed grooves 31 at the same time, thereby further improving the fixing effect on the pulley. The arc-shaped pinions 41 can also be better inserted into the fixed grooves 31, and the wear between the pinions 41 and the nut 3 during fixing can be reduced, further improving the service life.

[0040] As Figure 1 and Figure 2 shown, the pressure plate 4 is provided with kidney-shaped grooves 42, and bolts 421 are arranged in the kidney-shaped grooves 42. The bolts 421 pass through the kidney-shaped grooves 42 and are threadedly connected to the plate body 2. There are two kidney-shaped grooves 42, and the kidney-shaped grooves 42 are arranged in parallel. In specific implementation, the bolts 421 in this embodiment are respectively arranged at the two ends of the kidney-shaped grooves 42 away from each other, and the pressure plate 4 is fixed at the diagonal line, thereby further increasing the stability of the pressure plate 4 on the plate body 2 and further increasing the stabilizing effect of the pressure plate 4 on the nut 3.

[0041] As Figure 1 shown, guiding inclined surfaces 32 are provided at both the upper and lower ends of the nut 3. In specific implementation, when the nut 3 is slightly loose, the nut 3 can shake within a certain range, reducing the situation where interference is formed due to inability to shake, resulting in damage to the guiding rod 1 and the nut 3.

[0042] Working principle: First, thread the nut 3 onto the guiding rod 1, then insert the pinions 41 of the pressure plate 4 into the nut 3, and then connect the pressure plate 4 to the plate body 2 through the bolts 421, so as to fix the nut 3 and reduce the loosening of the nut 3.

[0043] The above is the preferred embodiment of the present application. The protection scope of the present application is not limited by this. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A fixing device for a hydraulic press nut (3), comprising a guide rod (1) and a plate body (2), wherein the guide rod (1) extends into the plate body (2) and is fixedly connected to the plate body (2), and is characterized in that: A nut (3) is further provided on the guide rod (1). The nut (3) is in threaded connection with the guide rod (1). The nut (3) abuts against the plate body (2). A fixing groove (31) is formed in the nut (3). A pressing plate (4) is further provided on the plate body (2). Insertion teeth (41) corresponding to the fixing groove (31) are provided on the pressing plate (4). The insertion teeth (41) are used for being embedded in the fixing groove (31) and abutting against the groove wall of the fixing groove (31).

2. The fixing device for the nut (3) of a hydraulic press according to claim 1, characterized in that: A plurality of the fixing grooves (31) are arranged at equal intervals along the circumferential direction of the nut (3).

3. A fixing device for a hydraulic press nut (3) according to claim 2, characterized in that: The fixing grooves (31) are arranged in a triangular shape, and the shapes and sizes of the fixing grooves (31) are the same.

4. A fixing device for a hydraulic press nut (3) according to claim 3, characterized in that: The insertion teeth (41) are arranged in an arc shape, and one end of the insertion teeth (41) far away from the pressing plate (4) cannot abut against the groove wall of the fixing groove (31).

5. A fixing device for a hydraulic press nut (3) according to claim 4, characterized in that: A plurality of the insertion teeth (41) are provided, and the insertion teeth (41) are arranged in parallel along the pressing plate (4).

6. The fixing device for the nut (3) of a hydraulic press according to claim 5, characterized in that: The length of the insertion teeth (41) near the middle of the pressing plate (4) is shorter than that of the insertion teeth (41) far away from the middle of the pressing plate (4).

7. A fixing device for a hydraulic press nut (3) according to claim 1, characterized in that: A kidney-shaped groove (42) is formed in the pressing plate (4). A bolt (421) is arranged in the kidney-shaped groove (42). The bolt (421) passes through the kidney-shaped groove (42) and is in threaded connection with the plate body (2).

8. A fixing device for a hydraulic press nut (3) according to claim 7, characterized in that: Two of the kidney-shaped grooves (42) are provided, and the kidney-shaped grooves (42) are arranged in parallel.

9. A fixing device for a hydraulic press nut (3) according to claim 1, characterized in that: Fixing grooves (31) are provided at both the upper and lower ends of the nut (3).

10. A fixing device for a hydraulic press nut (3) according to claim 1, characterized in that: Guide inclined surfaces (32) are formed at both the upper and lower ends of the nut (3).

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