Hydraulic clamp for universal testing machine

Abstract

The utility model provides a hydraulic clamp for a universal testing machine, which relates to the technical field of testing machines and comprises a fixed base, two sliding grooves are formed in the top of the fixed base, and two clamping devices are connected to the inner walls of the sliding grooves formed in the top of the fixed base in a sliding mode. Firstly, a hydraulic rod fixed to one side of a fixing frame drives a fixing frame to move towards one end of a workpiece, when the fixing frame moves to a designated position, movement is stopped, then an air cylinder is started, the air cylinder drives a driving block to move through a connecting frame, and the driving block drives a movable block to move while moving; by means of the device, the probability that indentation, deformation and even cracks appear on the surface of the workpiece, the performance of the workpiece is affected, and follow-up use is affected is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to test machine technical field especially relates to a hydraulic clamp for universal testing machine. BACKGROUND

[0002] The hydraulic clamp for universal testing machine is a device for fixing and clamping test samples to perform mechanical property tests such as tension, compression, and bending on the universal testing machine. The clamp uses hydraulic principle to apply clamping force, ensuring that the test sample does not slip or damage during the test process, thereby ensuring the accuracy and repeatability of the test results.

[0003] The existing hydraulic clamp for universal testing machine, when in use, first fixes one clamping base to the hydraulic rods on the upper ends of the two supporting blocks, adjusts the other clamping base to the fixed position in the sliding groove through the fixed shaft and the fixed sheet, then moves one clamping base according to the type of workpiece and fixes some workpieces through the two limiting shafts on the upper end, clamps and fixes sheet-shaped workpieces through the clamping groove and the fixing bolt, and rotates the rotating handle on one side to change the angle of the workpiece, facilitating the operation of the upper end universal testing machine and the normal operation of the testing machine, thereby improving the practicality of the device. However, the existing hydraulic clamp for universal testing machine clamps sheet-shaped workpieces through the clamping groove and the fixing bolt and fixes workpieces through the limiting shaft. When using the fixing bolt, the bolt may generate a large local stress on the surface of the sheet-shaped workpiece during the tightening process, causing indentation, deformation, or even cracks on the surface of the workpiece, affecting the performance and subsequent use of the workpiece.

[0004] Therefore, it is necessary to provide a new hydraulic clamp for universal testing machine to solve the above technical problems. SUMMARY

[0005] To solve the above technical problems, the utility model provides a hydraulic clamp for universal testing machine.

[0006] The hydraulic clamp for universal testing machine provided by the utility model comprises a fixed base, two sliding grooves are formed in the top of the fixed base, and two clamping devices are slidably connected to the inner walls of the sliding grooves formed in the top of the fixed base.

[0007] The clamping device comprises a fixed component, two fixed frames, and two hydraulic rods. The two fixed frames are fixedly connected to the side walls on one side of the fixed base. The two hydraulic rods are fixedly connected to the side walls on one side of the two fixed frames, respectively. The ends of the two hydraulic rods away from the fixed frames are fixedly connected with sliding blocks, respectively. The two hydraulic rods are arranged in the two sliding grooves formed in the top of the fixed base. The sliding blocks are fixedly connected with a fixed frame on the top. The fixed component is fixedly connected to the inner wall of the fixed frame.

[0008] Preferably, the fixed assembly includes a driving member and a connecting frame, one end of the driving member is fixedly connected to the inner wall of the fixed frame, and the telescopic end of the driving member is fixedly connected to one end of the connecting frame, one end of the connecting frame away from the driving member is fixedly connected with a driving block, the side walls of the driving block are slidably connected with movable blocks, the upper and lower ends of the movable blocks are fixedly connected with sliding blocks, the sliding blocks are slidably connected inside the slide rails arranged inside the fixed frame, and the side wall of the movable block is fixedly connected with a clamping claw.

[0009] Preferably, the fixed base is provided with receiving grooves at both ends of the top, and the inner wall of the receiving groove is rotatably connected with a protection plate through a hinge.

[0010] Preferably, the through hole in the protection plate is provided with a transparent observation window, and one end of the protection plate is fixedly connected with two arc-shaped supports, and one end of the two arc-shaped supports away from the protection plate is slidably connected with the inner wall of the groove of the receiving groove.

[0011] Preferably, the driving member is a gas cylinder, one end of the gas cylinder is fixedly connected to the inner wall of the fixed frame, and the telescopic end of the gas cylinder is fixedly connected to one end of the connecting frame.

[0012] Preferably, the side walls of the driving block are inclined, and the side wall of the movable block is inclined, and the inclined surface of the movable block matches the inclined surface of the driving block.

[0013] Preferably, the side wall of the clamping claw is fixedly connected with a rubber soft block.

[0014] Preferably, the bottom of the fixed base is fixedly connected with a plurality of evenly arranged anti-skid pads.

[0015] Compared with the related art, the hydraulic clamp for the universal testing machine has the following advantages

[0016] Advantages:

[0017] When the workpiece needs to be clamped and fixed, the fixed frame is first driven by the hydraulic rod fixed on one side of the fixed frame to move towards the workpiece, and when it moves to the specified position, the movement is stopped, and then the gas cylinder is started to drive the driving block to move through the connecting frame, the driving block moves while driving the movable block to move, thereby driving the clamping claw arranged on the movable block to move and clamping and fixing the workpiece through the clamping claw. This device reduces the probability of causing indentation, deformation or even cracks on the surface of the workpiece, affecting the performance of the workpiece and subsequent use. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 The structure diagram of the hydraulic clamp for the universal testing machine is provided.

[0019] Figure 2 Fig. 2 is a structural schematic view of the clamping device in another state; Figure 1

[0020] Figure 3 Fig. 3 is a structural schematic view of the clamping device; Figure 1

[0021] Figure 4 Fig. 4 is a sectional structural schematic view of the clamping device; Figure 3

[0022] Figure 5 Fig. 5 is a structural schematic view of the fixing assembly. Figure 4

[0023] Reference numerals in the drawing: 1, fixed base; 2, sliding groove; 3, fixed frame; 4, hydraulic rod; 5, sliding block; 6, connecting frame; 7, driving block; 8, movable block; 9, fixed frame; 10, clamping claw; 11, storage groove; 12, protective plate; 13, transparent observation window; 14, arc-shaped support; 15, air cylinder; 16, rubber soft block; 17, anti-skid pad. DETAILED DESCRIPTION

[0024] The utility model will be further described below in combination with the drawings and embodiments.

[0025] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 , among which, Figure 1 Fig. 1 is a structural schematic view of a hydraulic clamp for a universal testing machine provided by the utility model; Figure 2 Fig. 2 is a structural schematic view of the clamping device in another state; Figure 1 Fig. 3 is a structural schematic view of the clamping device; Figure 3 Fig. 4 is a sectional structural schematic view of the clamping device; Figure 1 Fig. 5 is a structural schematic view of the fixing assembly. Figure 4 Figure 3 In the specific implementation process, as Figure 5 Figure 4

[0026] In the specific implementation process, as Figures 1 to 5 ​​​​​​​As shown, the top of the fixed base 1 is provided with two sliding grooves 2, and the inner wall of the sliding groove 2 provided on the top of the fixed base 1 is slidably connected with two clamping devices, the clamping device comprises a fixed component, two fixed frames 3 and two hydraulic rods 4, both of the two fixed frames 3 are fixedly connected to one side of the side wall of the fixed base 1, both of the two hydraulic rods 4 are fixedly connected to one side of the side wall of the two fixed frames 3, and the end of the two hydraulic rods 4 away from the fixed frame 3 is fixedly connected with a sliding block 5, and the two hydraulic rods 4 are arranged in the two sliding grooves 2 provided on the top of the fixed base 1, the top of the sliding block 5 is fixedly connected with a fixed frame 9, and the fixed component is fixedly connected to the inner wall of the fixed frame 9.

[0027] It should be noted that the bottom of the fixed base 1 is fixedly connected with a plurality of evenly arranged anti-skid pads 17.

[0028] The fixed component comprises a driving member and a connecting frame 6, one end of the driving member is fixedly connected to the inner wall of the fixed frame 9, and the telescopic end of the driving member is fixedly connected to one end of the connecting frame 6, the end of the connecting frame 6 away from the driving member is fixedly connected with a driving block 7, both sides of the driving block 7 are slidably connected with a movable block 8, and both ends of the movable block 8 are fixedly connected with a sliding block, the sliding block is slidably connected inside the sliding rail arranged inside the fixed frame 9, and one side of the movable block 8 is fixedly connected with a clamping jaw 10.

[0029] It should be noted that the driving member is a gas cylinder 15, one end of the gas cylinder 15 is fixedly connected to the inner wall of the fixed frame 9, and the telescopic end of the gas cylinder 15 is fixedly connected to one end of the connecting frame 6.

[0030] Moreover, both sides of the driving block 7 are inclined, one side of the movable block 8 is inclined, and the slope of the movable block 8 matches the slope of the driving block 7, and the movable block 8 is moved by the driving block 7.

[0031] One side of the clamping jaw 10 is fixedly connected with a rubber soft block 16, and the rubber soft block 16 arranged on the clamping jaw 10 can reduce the damage to the workpiece.

[0032] In use, when the workpiece needs to be clamped and fixed, first, the hydraulic rod 4 fixed on one side of the fixed frame 3 drives the fixed frame 9 to move towards the workpiece, and when it moves to the specified position, it stops moving, and then the gas cylinder 15 is started, the gas cylinder 15 drives the driving block 7 to move through the connecting frame 6, the driving block 7 moves while driving the movable block 8 to move, thereby driving the clamping jaw 10 arranged on the movable block 8 to move, and clamping and fixing the workpiece through the clamping jaw 10.

[0033] Both ends of the top of the fixed base 1 are provided with a receiving groove 11, and the inner wall of the receiving groove 11 is rotatably connected with a protective plate 12 through a hinge.

[0034] When necessary, the inner wall of the through hole of the protection plate 12 is provided with a transparent observation window 13, and one end of the protection plate 12 is fixedly connected with two arc-shaped supports 14, and the ends of the two arc-shaped supports 14 away from the protection plate 12 are slidably connected with the inner wall of the groove of the receiving groove 11.

[0035] The working principle of the utility model is as follows: when it is necessary to clamp and fix the workpiece during use, firstly, the fixed frame 3 on one side of the hydraulic rod 4 drives the fixed frame 9 to move to the direction of the workpiece, when it is moved to the specified position, stop moving, then start the air cylinder 15, the air cylinder 15 drives the driving block 7 to move through the connecting frame 6, the driving block 7 moves at the same time, will drive the movable block 8 to move, thereby drive the clamping jaw 10 arranged on the movable block 8 to move, and clamp and fix the workpiece through the clamping jaw 10.

[0036] The circuit and the control involved in the utility model are prior art, and too much repetition is not performed here.

[0037] The above-mentioned is only the embodiment of the utility model, and does not limit the patent range of the utility model, and equivalent structure or equivalent process conversion using the contents of the utility model specification and drawings, or direct or indirect application in other related technical fields, are also included in the patent protection range of the utility model.

Claims

1. A hydraulic clamp for a universal testing machine, characterized in that, It includes a fixed base (1), the top of which has two sliding grooves (2), and the inner wall of the sliding grooves (2) on the top of the fixed base (1) is slidably connected to two clamping devices; The clamping device includes a fixing component, two fixing frames (3) and two hydraulic rods (4). The two fixing frames (3) are fixedly connected to one side wall of the fixing base (1). The two hydraulic rods (4) are respectively fixedly connected to one side wall of the two fixing frames (3). The end of each hydraulic rod (4) away from the fixing frame (3) is fixedly connected to a slider (5). The two hydraulic rods (4) are respectively set in two sliding grooves (2) on the top of the fixing base (1). The top of the slider (5) is fixedly connected to a fixing frame (9). The fixing component is fixedly connected to the inner wall of the fixing frame (9).

2. The hydraulic clamp for a universal testing machine according to claim 1, characterized in that, The fixing component includes a drive component and a connecting frame (6). One end of the drive component is fixedly connected to the inner wall of the fixing frame (9), and the telescopic end of the drive component is fixedly connected to one end of the connecting frame (6). A drive block (7) is fixedly connected to the end of the connecting frame (6) away from the drive component. Movable blocks (8) are slidably connected to both side walls of the drive block (7). Sliding blocks are fixedly connected to both the upper and lower ends of the movable block (8). The sliding blocks are slidably connected to the slide rail inside the fixing frame (9). A clamping claw (10) is fixedly connected to one side wall of the movable block (8).

3. The hydraulic clamp for a universal testing machine according to claim 1, characterized in that, The fixed base (1) has storage slots (11) at both ends of its top, and the inner wall of the storage slots (11) is connected to a protective plate (12) by a hinge.

4. The hydraulic clamp for a universal testing machine according to claim 3, characterized in that, The inner wall of the through hole opened on the protective plate (12) is provided with a transparent observation window (13), and two arc-shaped brackets (14) are fixedly connected to one end of the protective plate (12). The ends of the two arc-shaped brackets (14) away from the protective plate (12) are slidably connected to the inner wall of the groove opened in the storage slot (11).

5. The hydraulic clamp for a universal testing machine according to claim 2, characterized in that, The driving component is a cylinder (15), one end of which is fixedly connected to the inner wall of the fixed frame (9), and the telescopic end of the cylinder (15) is fixedly connected to one end of the connecting frame (6).

6. The hydraulic clamp for a universal testing machine according to claim 2, characterized in that, The drive block (7) is inclined on both sides, and the side wall of the movable block (8) is inclined on one side, and the inclined surface of the movable block (8) matches the inclined surface of the drive block (7).

7. The hydraulic clamp for a universal testing machine according to claim 2, characterized in that, A rubber block (16) is fixedly connected to one side wall of the clamping claw (10).

8. The hydraulic clamp for a universal testing machine according to claim 3, characterized in that, The bottom of the fixed base (1) is fixedly connected with several evenly arranged anti-slip pads (17).

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