Anti-falling device for sliding block of hydraulic machine

Abstract

The utility model discloses a hydraulic press slide block anti-drop device which comprises a shell, a piston, a slide block, clamping plates and a rack, a gear is rotated to drive the rack to move and drive a positive and negative tooth threaded rod to rotate, a lead screw structure is utilized to push the two clamping plates to be close to each other and clamp the piston rod, a clamping block is embedded into a clamping groove, and the slide block and the piston rod are connected. When the piston rod drives the sliding block to move up and down, the shell pushes the rack to move towards the middle of the sliding block every time the sliding block moves up and down, the gear is driven to rotate to tighten the clamping plate, and the sliding block is prevented from falling off from the bottom end of the piston rod after long-time piston movement.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic presses, in particular to a hydraulic press slide block anti-falling device. 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 three parts: the machine (host), the power system, and the hydraulic control system. Hydraulic presses are classified into valve hydraulic presses, liquid hydraulic presses, and engineering hydraulic presses.

[0003] The existing hydraulic press slider is fixed to the bottom end of the piston rod by using a nut. As the piston rod reciprocates up and down for a long time, the connection between the piston rod and the nut will gradually loosen, eventually causing the slider to fall off from the bottom of the piston rod. Utility Model Content

[0004] The purpose of this section is to summarize some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract of the specification and the name of the utility model of this application to avoid blurring the purpose of this section, the abstract of the specification and the name of the utility model, and such simplifications or omissions cannot be used to limit the scope of the utility model.

[0005] In view of the above problems and / or the problems existing in the existing anti-falling device for the slide block of a hydraulic press, the present utility model is proposed.

[0006] Therefore, the purpose of the utility model is to provide a hydraulic press slider anti-falling device, by arranging a block at the bottom of the piston rod, symmetrically installing two fixed plates on the top of the slider, the side walls of the fixed plates are rotatably connected to gears, the side walls of the gears are provided with positive and negative threaded rods, two clamping plates are symmetrically arranged inside the two fixed plates, and a clamping groove is provided on the inner wall of the clamping plate, and a rack is slidably connected to the top of the slider, the rack is meshed with the gear, and the rack is driven to move by rotating the gear, and the positive and negative threaded rods are driven to rotate, and the two clamping plates are pushed close to each other and clamp the piston rod by the screw structure, and the block is embedded in the inside of the clamping groove to connect the slider and the piston rod. When the piston rod drives the slider to move up and down, each time the slider moves up and down, the shell pushes the rack to move to the middle of the slider, driving the gear to rotate to tighten the clamping plate, thereby preventing the slider from falling off from the bottom end of the piston rod after long-term piston movement.

[0007] In order to solve the above technical problems, according to one aspect of the present invention, the present invention provides the following technical solutions:

[0008] A hydraulic press slide block anti-falling device, comprising:

[0009] A shell, wherein an air groove is provided at the bottom of the shell, and a support column is installed at the bottom of the shell;

[0010] A piston is located inside the gas groove, a piston rod is installed at the bottom of the piston, and a clamping block is installed at the bottom end of the piston rod;

[0011] A slider is located at the bottom end of the piston rod, two fixing plates are symmetrically installed on the top of the slider, the side walls of the fixing plates are rotatably connected with gears, the side walls of the gears are installed with positive and negative threaded rods, and the positive and negative threaded rods extend between the two fixing plates;

[0012] A clamping plate, wherein a slot is provided on the inner wall of the clamping plate, ear plates are installed at both ends of the clamping plate, threaded holes are provided on the side walls of the ear plates, and the positive and negative threaded rods are rotated to pass through the threaded holes;

[0013] A rack is slidably connected to the top of the sliding block, and the rack is meshed with the gear.

[0014] As a preferred solution of the hydraulic press slide block anti-falling device described in the utility model, a guide rod is installed between the two fixing plates, a guide hole is opened on the side wall of the ear plate, and the guide rod passes through the guide hole.

[0015] As a preferred solution of the anti-falling device for a hydraulic press slide block described in the utility model, a guide groove is provided on the top of the slide block.

[0016] As a preferred solution of the anti-falling device for the slide block of a hydraulic press described in the utility model, a second protrusion is installed on the side wall of the rack, and the top end of the second protrusion has a second arc surface.

[0017] As a preferred solution of the anti-falling device for the slide block of a hydraulic press described in the utility model, a first protrusion is installed at the bottom of the shell, and the bottom end of the first protrusion has a first arc surface.

[0018] As a preferred solution of the hydraulic press slide block anti-falling device described in the utility model, a guide plate is installed at the bottom of the rack, the guide plate is located inside the guide groove, and an anti-slip plate is installed at the bottom of the second protrusion.

[0019] Compared with the prior art: a card block is arranged at the bottom of the piston rod, two fixed plates are symmetrically installed on the top of the slider, the side walls of the fixed plates are rotatably connected to gears, the side walls of the gears are provided with positive and negative threaded rods, two clamping plates are symmetrically arranged inside the two fixed plates, and a card slot is opened on the inner wall of the clamping plate. A rack is slidably connected to the top of the slider, and the rack is meshed with the gear. The rack is driven to move by rotating the gear, and the positive and negative threaded rods are driven to rotate, and the screw structure is used to push the two clamping plates close to each other and clamp the piston rod, and the card block is embedded in the card slot to connect the slider and the piston rod. When the piston rod drives the slider to move up and down, each time the slider moves up and down, the shell pushes the rack to move to the middle of the slider, driving the gear to rotate to tighten the clamping plate, thereby preventing the slider from falling off from the bottom end of the piston rod after long-term piston movement. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solution of the implementation of the utility model, the utility model will be described in detail below in combination with the drawings and detailed implementation. Obviously, the drawings described below are only some implementations of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0021] Figure 1 This is the overall structural diagram of a hydraulic press slider anti-falling device of the utility model;

[0022] Figure 2 This is a partial structural diagram of a hydraulic press slide anti-falling device of the utility model;

[0023] Figure 3 This is a structural diagram of a slider of a hydraulic press slider anti-falling device of the utility model;

[0024] Figure 4 This is a structural diagram of a clamping plate of a hydraulic press slide anti-falling device of the utility model;

[0025] Figure 5 This is a structural diagram of a rack of a hydraulic press slide anti-falling device of the utility model;

[0026] Figure 6 This is a bottom structural diagram of a housing of a hydraulic press slide block anti-falling device according to the utility model. DETAILED DESCRIPTION

[0027] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0028] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the implementation of the present invention, for the sake of convenience, the cross-sectional diagram showing the device structure will not be partially enlarged according to the general proportion, and the schematic diagram is only an example, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0029] In order to make the purpose, technical solution and advantages of the present invention more clear, the implementation mode of the present invention will be further described in detail below with reference to the accompanying drawings.

[0030] The utility model provides a hydraulic press slider anti-falling device, by arranging a clamping block at the bottom of a piston rod, symmetrically installing two fixing plates on the top of the slider, the side walls of the fixing plates are rotatably connected to gears, the side walls of the gears are provided with positive and negative threaded rods, two clamping plates are symmetrically arranged inside the two fixing plates, a clamping groove is provided on the inner walls of the clamping plates, a rack is slidably connected to the top of the slider, the rack is meshed with the gear, the rack is driven to move by rotating the gear, and the positive and negative threaded rods are driven to rotate, and the two clamping plates are pushed close to each other and clamp the piston rod by a screw rod structure, the clamping block is embedded in the inside of the clamping groove, connecting the slider and the piston rod, when the piston rod drives the slider to move up and down, each time the slider moves up and down, the shell pushes the rack to move toward the middle of the slider, drives the gear to rotate to tighten the clamping plate, and prevents the slider from falling off from the bottom end of the piston rod after a long period of piston movement.

[0031] Figure 1-6 The figure shows a schematic diagram of a hydraulic press slide anti-falling device according to the utility model. Figure 1-Figure 6 A hydraulic press slider anti-dropping device of this embodiment includes a housing 100, a piston 200, a slider 300, a clamping plate 400 and a rack 500.

[0032] An air groove 110 is opened at the bottom of the shell 100, a support column 120 is installed at the bottom of the shell 100, a first protrusion 130 is installed at the bottom of the shell 100, and the bottom end of the first protrusion 130 has a first arc surface 140. When the gear 320 rotates to drive the splint 400 to move into place, the second protrusion 510 is located inside the first protrusion 130. When the slider 300 moves upward, the side wall of the second protrusion 510 should fit with the side wall of the first protrusion 130.

[0033] The piston 200 is located inside the gas groove 110 , a piston rod 210 is installed at the bottom of the piston 200 , and a clamping block 220 is installed at the bottom end of the piston rod 210 .

[0034] The slider 300 is located at the bottom end of the piston rod 210, and two fixed plates 310 are symmetrically installed on the top of the slider 300. The side wall of the fixed plate 310 is rotatably connected with a gear 320. The side wall of the gear 320 is installed with a positive and negative threaded rod 330. The positive and negative threaded rod 330 extends between the two fixed plates 310. A guide groove 350 is opened on the top of the slider 300, and a clamping groove 410 is opened on the inner wall of the clamping plate 400. Ear plates 420 are installed at both ends of the clamping plate 400. The side wall of the ear plate 420 is opened with a threaded hole 430. The positive and negative threaded rod 330 rotates through the threaded hole 430, a guide rod 340 is installed between the two fixed plates 310, and a guide hole 440 is opened on the side wall of the ear plate 420. The guide rod 340 passes through the guide hole 440, and the positive and negative threaded rod 330 is driven to rotate by the rotating gear 320. When the positive and negative threaded rod 330 rotates, the screw structure is used to push the two clamping plates 400 to approach each other and clamp the piston 200. The block 220 is embedded in the slot 410 to limit and fix the slider 300 at the bottom end of the piston 200. At the same time, when the gear 320 rotates, it drives the rack 500 to move toward the center position of the slider 300.

[0035] The rack 500 is slidably connected to the top of the slider 300, the rack 500 is meshed with the gear 320, a second protrusion 510 is installed on the side wall of the rack 500, the top of the second protrusion 510 has a second arc surface 520, a guide plate 530 is installed at the bottom of the rack 500, the guide plate 530 is located inside the guide groove 350, and an anti-slip plate 540 is installed at the bottom of the second protrusion 510. When the gear 320 rotates, it drives the rack 500 to move toward the center of the slider 300 until the clamping plate 400 moves into place to clamp the piston 200. When the clamping plate 400 is loose, the clamping plate 540 The plate 400 drives the positive and negative threaded rod 330 and the gear 320 to reverse, and the gear 320 drives the rack 500 to move toward both sides of the slider 300. When the slider 300 drives the rack 500 to rise, the first curved surface 140 fits with the second curved surface 520. As the slider 300 and the rack 500 move upward, the first curved surface 140 squeezes the second protrusion 510 and the rack 500 along the second curved surface 520 to move toward the inside of the slider 300, driving the gear 320 and the positive and negative threaded rod 330 to rotate forward, pushing the clamping plate 400 to reset the clamping piston 200.

[0036] Although the present invention has been described above with reference to the embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the various features in the embodiments disclosed in the present invention may be used in combination with each other in any manner, and the fact that these combinations are not exhaustively described in this specification is only for the sake of omitting space and saving resources. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A hydraulic press slider anti-falling device, characterized in that: include: A housing (100), wherein an air groove (110) is provided at the bottom of the housing (100), and a support column (120) is installed at the bottom of the housing (100); A piston (200) is located inside the gas groove (110), a piston rod (210) is installed at the bottom of the piston (200), and a clamping block (220) is installed at the bottom end of the piston rod (210); A slider (300) is located at the bottom end of the piston rod (210), and two fixing plates (310) are symmetrically installed on the top of the slider (300). The side wall of the fixing plate (310) is rotatably connected to a gear (320), and the side wall of the gear (320) is installed with a positive and negative threaded rod (330), and the positive and negative threaded rod (330) extends between the two fixing plates (310); A clamping plate (400), wherein a clamping groove (410) is provided on the inner wall of the clamping plate (400), ear plates (420) are installed at both ends of the clamping plate (400), and a threaded hole (430) is provided on the side wall of the ear plate (420), and the positive and negative threaded rod (330) is rotatably passed through the threaded hole (430); A rack (500) is slidably connected to the top of the slider (300), and the rack (500) is meshed with the gear (320).

2. The anti-falling device for a hydraulic press slide according to claim 1, characterized in that: A guide rod (340) is installed between the two fixing plates (310), a guide hole (440) is opened on the side wall of the ear plate (420), and the guide rod (340) passes through the guide hole (440).

3. The anti-falling device for a hydraulic press slide according to claim 2, characterized in that: A guide groove (350) is provided on the top of the sliding block (300).

4. The anti-falling device for a hydraulic press slide according to claim 3, characterized in that: A second protrusion (510) is installed on the side wall of the rack (500), and the top end of the second protrusion (510) has a second arc-shaped surface (520).

5. The anti-falling device for a hydraulic press slide according to claim 4, characterized in that: A first convex block (130) is installed at the bottom of the housing (100), and the bottom end of the first convex block (130) has a first arc-shaped surface (140).

6. The anti-falling device for a hydraulic press slide according to claim 5, characterized in that: A guide plate (530) is installed at the bottom of the rack (500), and the guide plate (530) is located inside the guide groove (350). An anti-slip plate (540) is installed at the bottom of the second protrusion (510).

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