Hydraulic horizontal pushing clamp used in normal-temperature environment

Abstract

The utility model relates to the field of material physical property testing, and discloses a hydraulic horizontal pushing clamp used in a normal temperature environment, which comprises a clamp body, the top end of the clamp body is in threaded connection with a connecting rod, the side wall of the clamp body is fixedly connected with a hydraulic cylinder through a hexagon socket cap screw, and the inner wall of the hydraulic cylinder is provided with a piston rod. A clamping mechanism is arranged on the side wall of the right end of the piston rod, a hydraulic hard pipeline is arranged on the outer wall of the clamp body, a right-angle connector is detachably installed at the lower end of the hydraulic hard pipeline, and a centering piece is arranged at the bottom end of the clamp body. According to the utility model, hydraulic oil is accurately conveyed to the hydraulic cylinder through the hydraulic hard pipeline and the right-angle joint, the hydraulic oil can be accurately controlled to enter and exit according to test requirements, the piston rods are pushed to stably reciprocate, and the upper rack, the lower rack and the gear shaft are matched to guarantee the synchronous movement of the piston rods on the two sides; and the clamping accuracy and stability of the clamping blocks are effectively improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to material physical performance test field especially, relate to a hydraulic flat push clamp for normal temperature environment. BACKGROUND

[0002] In material physical performance test field, the jig tool used is many, and the hydraulic flat push clamp is more applied at present, the hydraulic flat push clamp provides power with hydraulic oil as medium, reaches the purpose of clamping sample through parallel pushing both end piston rod action, but if both end piston rod movement is not consistent, or occurs self-rotation, will cause the clamping block holding position to be not centered, influences the authenticity and accuracy of experiment, therefore proposes a hydraulic flat push clamp for normal temperature environment to solve above -mentioned problem. SUMMARY

[0003] In order to make up for above insufficient, the utility model provides a hydraulic flat push clamp for normal temperature environment, aims at improving the problem that piston rod exists movement inconsistency in prior art.

[0004] In order to realize the above purpose, the utility model adopts the following technical scheme: a hydraulic flat push clamp for normal temperature environment, including the clamping body, the top end of the clamping body is connected with connecting rod in screw thread, the lateral wall of the clamping body is fixedly connected with hydraulic cylinder through internal hexagonal cylindrical head screw, the inner wall of the hydraulic cylinder is provided with piston rod, the right end lateral wall of the piston rod is provided with clamping mechanism, the outer wall of the clamping body is provided with hydraulic hard pipe line, the lower end of the hydraulic hard pipe line is detachably installed with right angle joint, the bottom of the clamping body is provided with centering piece, the inner wall of the clamping body is provided with synchronous assembly;

[0005] The clamping mechanism includes cylindrical pin, the cylindrical pin is inserted in the right end lateral wall of piston rod, the right end of the cylindrical pin is fixedly connected with clamping block, and the clamping block and the piston rod are fixedly connected through internal hexagonal flat end set screw.

[0006] Further description of the above technical scheme:

[0007] The synchronous assembly includes gear shaft, the gear shaft is rotatably connected on the inner wall of the clamping body, the outer wall of the gear shaft is engaged with lower rack and upper rack respectively, and the outer walls of the lower rack and the upper rack are fixedly connected with synchronous rod respectively.

[0008] Further description of the above technical scheme:

[0009] The synchronous rod is fixedly connected on the outer wall of the piston rod.

[0010] Further description of the above technical scheme:

[0011] The cylindrical pins are provided in multiple groups, and the multiple groups of cylindrical pins are symmetrically arranged on the clamping block.

[0012] As a further description of the above technical solution:

[0013] The centering pieces are axially symmetrically distributed in the middle of the clamping body.

[0014] As a further description of the above technical solution:

[0015] The right-angle joint communicates with the internal hole of the clamping body.

[0016] As a further description of the above technical solution:

[0017] The piston rod is slidingly connected to the inner wall of the clamping body.

[0018] The utility model has the advantages of the following:

[0019] 1. In the utility model, the hydraulic hard pipeline and the right-angle joint are used to accurately deliver hydraulic oil to the hydraulic cylinder, the hydraulic oil can be accurately controlled to enter and exit according to test requirements, the piston rod is stably reciprocated, the cooperation of the upper rack, the lower rack and the gear shaft ensures the synchronous movement of the two piston rods, the accuracy and stability of the clamping block clamping are effectively improved, in addition, the centering pieces of the clamping body can accurately constrain the position of the sample before clamping, the sample is strictly centered in the clamp, the accuracy and reliability of test data are greatly improved, the overall structure design is scientific and reasonable, and efficient and accurate sample clamping operation can be provided for related tests. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 The utility model provides a kind of clamping body overall schematic diagram of hydraulic flat push clamp for normal temperature environment for the utility model;

[0021] Figure 2 The utility model provides a kind of clamping body overall cross-sectional schematic diagram of hydraulic flat push clamp for normal temperature environment for the utility model;

[0022] Figure 3 The utility model provides a kind of clamping body back surface display schematic diagram of hydraulic flat push clamp for normal temperature environment for the utility model;

[0023] Figure 4 The utility model provides a kind of lower rack and upper rack and gear shaft overall three-dimensional schematic diagram of hydraulic flat push clamp for normal temperature environment for the utility model.

[0024] LEGEND:

[0025] 11, connecting rod; 12, hydraulic cylinder; 13, piston rod; 14, clamping body; 15, inner hexagonal cylindrical head screw; 16, cylindrical pin; 17, clamping block; 18, inner hexagonal flat end set screw; 19, hydraulic hard pipeline; 20, right angle joint; 21, synchronous assembly; 2101, lower rack; 2102, gear shaft; 2103, upper rack; 2104, synchronous rod; 22, centering piece. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0027] With reference to Figures 1-3 An embodiment provided by the utility model: a hydraulic flat push clamp for normal temperature environment, comprising a clamping body 14, the clamping body 14 is the connecting frame of the whole component, guarantees the movement precision and stability, is the key support of the cooperative work of each component, the top end of the clamping body 14 is threadedly connected with a connecting rod 11, the top end of the connecting rod 11 is connected with a testing machine, accepts the force and instruction of the testing machine, guarantees the test precision and reliability, stably transmits the load and movement required by the test, the side wall of the clamping body 14 is fixedly connected with a hydraulic cylinder 12 by an inner hexagonal cylindrical head screw 15, the hydraulic cylinder 12 is used as a power source, uses hydraulic oil as medium, accurately converts hydraulic energy into mechanical energy, can control the in and out of hydraulic oil according to test demand, drives the piston rod 13 to reciprocate smoothly, provides strong power for the action of the clamp, the inner wall of the hydraulic cylinder 12 is provided with the piston rod 13, the piston rod 13 is the main component of the existing hydraulic rod 13, which will not be described in detail here, the right end side wall of the piston rod 13 is provided with a clamping mechanism, the outer wall of the clamping body 14 is provided with a hydraulic hard pipeline 19, the hydraulic hard pipeline 19 is used as a hydraulic oil conveying exclusive channel, stably conveys the hydraulic oil from the external hydraulic source to the hydraulic cylinder 12, its design is strictly according to the system pressure, flow demand and layout requirement, has the characteristics of high strength, high pressure resistance and low friction loss, ensures that the hydraulic oil transmission is efficient and stable, has no leakage risk, provides continuous and reliable power support for the stable work of the hydraulic cylinder 12, is the core path of maintaining the hydraulic power supply of the clamp, the lower end of the hydraulic hard pipeline 19 is detachably provided with a right angle joint 20, one end of the right angle joint 20 is accurately connected with the hydraulic hard pipeline 19, the other end is tightly matched with the internal hole of the clamping body 14, ensures that the hydraulic oil smoothly enters the hydraulic cylinder 12, the bottom end of the clamping body 14 is provided with a centering piece 22, the centering pieces 22 are symmetrically arranged during the test, strictly limit the sample position by virtue of its precise design and specific size and shape, guarantee the accurate centering of the sample in the clamp, the inner wall of the clamping body 14 is provided with a synchronous assembly 21.

[0028] The clamping mechanism comprises a cylindrical pin 16 inserted into the right end side wall of the piston rod 13, and the piston rod 13 has a hole corresponding to the cylindrical pin 16, so that the cylindrical pin 16 can be inserted. During the process that the hydraulic cylinder 12 drives the piston rod 13 to drive the clamping block 17 to clamp the sample, the stability of the clamping block 17 is greatly enhanced, the clamping force of the clamping block 17 on the sample is uniform and the position is constant, the test accuracy is effectively ensured, the right end of the cylindrical pin 16 is fixedly connected with the clamping block 17, and the clamping block 17 is fixedly connected with the piston rod 13 through the inner hexagonal flat end set screw 18.

[0029] With reference to Figures 2-4 , the synchronous assembly 21 comprises a gear shaft 2102 rotationally connected to the inner wall of the clamping body 14, and the outer wall of the gear shaft 2102 is engaged with a lower rack 2101 and an upper rack 2103 respectively. Through the cooperation of the lower rack 2101, the upper rack 2103 and the gear shaft 2102, the displacement and speed of the piston rod 13 on both sides can be consistent, so that the test is not affected by the uneven clamping of the clamping block 17 due to asynchronization or self-rotation. The outer walls of the lower rack 2101 and the upper rack 2103 are fixedly connected with a synchronous rod 2104, which mainly serves to connect the piston rod 13 with the lower rack 2101 and the upper rack 2103. The synchronous rod 2104 is fixedly connected to the outer wall of the piston rod 13, and the outer wall of the piston rod 13 has a corresponding groove to meet the synchronous movement of the piston rod 13 with the synchronous rod 2104. The cylindrical pin 16 is provided in multiple groups, and the multiple groups of cylindrical pins 16 are symmetrically arranged on the clamping block 17.

[0030] With reference to Figures 2-4 The centering piece 22 is axially symmetrically distributed in the middle of the clamping body 14, the right angle joint 20 communicates with the internal hole of the clamping body 14, and the piston rod 13 is slidingly connected to the inner wall of the clamping body 14.

[0031] Working principle: first, the hydraulic hard pipeline 19 delivers hydraulic oil from the external hydraulic source, and the hydraulic oil is accurately introduced into the hydraulic cylinder 12 through the right angle joint 20. According to the test requirements, the hydraulic cylinder 12 accurately controls the inflow and outflow of the hydraulic oil, and drives the piston rod 13 to slide smoothly and reciprocally in the clamping body 14. During this process, the upper rack 2103, the lower rack 2101 and the gear shaft 2102 ensure the synchronous movement of the piston rod 13 on both sides. When one side of the piston rod 13 moves under force, the synchronous rod 2104 fixedly connected to the outer wall of the piston rod 13 moves with it, driving the lower rack 2101 or the upper rack 2103 connected thereto to move. According to the gear transmission principle, the accuracy of clamping of the clamping block 17 is ensured.

[0032] Before clamping, the centering piece 22 of the clamping body 14 can accurately constrain the position of the sample during the test, so as to ensure that the sample is strictly centered in the clamp.

[0033] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and is not intended to limit the present application, although the foregoing embodiments of the present application has been described in detail, for the skilled in the art, it still can be modified, or for part of the technical features of the equivalent replacement, the spirit and principles of the present application, made any modification, equivalent replacement, improvement, etc., should be included within the scope of the present application.

Claims

1. Hydraulic flat push clamp for normal temperature environment, comprising a clamp body (14), characterized in that: The top end of the clamping body (14) is threadedly connected with a connecting rod (11), the side wall of the clamping body (14) is fixedly connected with a hydraulic cylinder (12) through an internal hexagonal cylindrical head screw (15), the inner wall of the hydraulic cylinder (12) is provided with a piston rod (13), the right end side wall of the piston rod (13) is provided with a clamping mechanism, the outer wall of the clamping body (14) is provided with a hydraulic hard pipe (19), the lower end of the hydraulic hard pipe (19) is detachably installed with a right angle joint (20), the bottom end of the clamping body (14) is provided with a centering piece (22), and the inner wall of the clamping body (14) is provided with a synchronous assembly (21). The clamping mechanism comprises a cylindrical pin (16), the cylindrical pin (16) is inserted into the right end side wall of the piston rod (13), and the right end of the cylindrical pin (16) is fixedly connected with a clamping block (17).

2. The hydraulic flat push clamp for normal temperature environment according to claim 1, characterized in that: The synchronous assembly (21) comprises a gear shaft (2102), the gear shaft (2102) is rotatably connected to the inner wall of the clamping body (14), the outer wall of the gear shaft (2102) is respectively engaged with a lower rack (2101) and an upper rack (2103), and the outer walls of the lower rack (2101) and the upper rack (2103) are respectively fixedly connected with a synchronous rod (2104).

3. The hydraulic flat push clamp for normal temperature environment according to claim 2, characterized in that: The synchronous rod (2104) is fixedly connected to the outer wall of the piston rod (13).

4. The hydraulic flat push clamp for normal temperature environment according to claim 1, characterized in that: The cylindrical pins (16) are provided in multiple groups, and the multiple groups of cylindrical pins (16) are symmetrically arranged on the clamping block (17).

5. The hydraulic flat push clamp for normal temperature environment according to claim 1, characterized in that: The centering piece (22) is axially symmetrically distributed in the middle of the clamping body (14).

6. The hydraulic flat push clamp for normal temperature environment according to claim 1, characterized in that: The right angle joint (20) communicates with the internal hole of the clamping body (14).

7. The hydraulic flat gripper for normal temperature environment as claimed in claim 1 wherein: The piston rod (13) is slidably connected to the inner wall of the clamping body (14).

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