Equipment for detecting bending force of minimum bending radius of rubber tube

Abstract

The invention belongs to the technical field of bending force detection, and discloses a rubber tube minimum bending radius bending force detection device which comprises a base and two stand columns fixedly installed on the base, a fixing frame is fixedly installed on one side of one stand column, a guide rail frame is fixedly installed between the two stand columns, and the guide rail frame is fixedly installed on one side of the other stand column. A sliding seat is slidably connected to the guide rail frame, mounting plates are arranged on one side of the sliding seat and one side of the fixing frame, a pressure sensor is arranged between the fixing frame and the adjacent mounting plate, clamping mechanisms are arranged on the two mounting plates, and two guide rods are fixedly mounted on the two sides of the two mounting plates; and inverted U-shaped frames are slidably connected between the two sets of guide rods, top frames are fixedly installed in the middles of the two U-shaped frames, and a plurality of supporting rods are evenly arranged at the bottoms of the two top frames in the circumferential direction. Different rubber tubes can be clamped without adjusting the clamping force of the clamping mechanism, and the efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of bending force detection, and in particular relates to a bending force detection device for a rubber hose with a minimum bending radius. Background Art

[0002] Hose bending force detection usually uses a clamp to fix the two ends of the hose on a movable plate and a fixed plate respectively. The movable plate is moved close to the fixed plate so that the movable plate and the fixed plate squeeze the hose, so that its bending radius gradually decreases to the target length. The rebound force generated by the bending of the hose will gather at the joint position. According to the transmission of force, the force of the hose rebounding on the fixed plate is read by the pressure sensor on one side of the fixed plate to determine the size of the bending force. However, the existing clamping structure is often fixed by a pneumatic push rod and a clamping plate. If the clamping force is too large, the end of the hose will be squeezed and deformed, affecting the measurement of the bending force and bending radius of the hose. Therefore, different sizes of clamping forces need to be adjusted for different hose clamps, which is more troublesome to operate. Summary of the invention

[0003] The object of the present invention is to provide a hose minimum bending radius bending force detection device to solve the problem that the clamping operation of the existing hose minimum bending radius bending force detection device is relatively troublesome.

[0004] To achieve the above object, the present invention provides the following technical solutions:

[0005] A hose minimum bending radius bending force detection device comprises a base and two columns fixedly mounted on the base, wherein a fixing frame is fixedly mounted on one side of one of the columns, a guide rail frame is fixedly mounted between the two columns, a slide seat is slidably connected to the guide rail frame, mounting plates are provided on one side of the slide seat and the fixing frame, and the two mounting plates are arranged opposite to each other, a pressure sensor is provided between the fixing frame and the adjacent mounting plates, a clamping mechanism is provided on the two mounting plates, two guide rods are fixedly mounted on both sides of the two mounting plates, an inverted U-shaped frame is slidably connected between the two groups of guide rods, a top frame is fixedly mounted in the middle of the two U-shaped frames, and a plurality of support rods are evenly arranged circumferentially on the bottom of the two top frames.

[0006] Preferably, the mounting plate on one side of the slide is fixedly connected to the slide, the mounting plate on one side of the fixing frame is rotationally connected to the bottom of the fixing frame, and the pressure sensor is located above the rotational connection between the fixing frame and the corresponding mounting plate.

[0007] Preferably, a screw rod which is screwed and penetrates the slide seat is rotatably connected in the guide rail frame, a motor is fixedly mounted on the guide rail frame, and an output end of the motor is fixedly connected to one end of the screw rod.

[0008] Preferably, the clamping mechanism comprises a clamping pad fixedly mounted on one side of a mounting plate and two pneumatic push rods passing through and fixed on the mounting plate, and clamping plates are fixedly mounted on the telescopic ends of the two pneumatic push rods.

[0009] Preferably, the pneumatic push rod includes a cylinder and a piston slidably connected in the cylinder, a piston rod is fixedly mounted on one side of the piston and its end slides out of the cylinder, the clamp is fixedly connected to the end of the piston rod, gas channels are provided at both ends of the cylinder, and the two gas channels are respectively located on both sides of the piston.

[0010] Preferably, the bottom of the top frame is flush with the top of the clamping pad.

[0011] Preferably, a scale is fixedly mounted on the base, pointers are fixedly mounted on the bottom of the two clamping pads, and one side of the pointer is arranged tangent to the clamping side of the clamping pad, and the two pointers are located directly above the scale.

[0012] Preferably, slides are slidably connected in both ends of the U-shaped frame, and first connecting rods are rotatably connected between the two slides and the clamping plate and the mounting frame.

[0013] Preferably, a slip ring is slidably provided above the top frame, and a plurality of slide grooves are opened in a circumferential array on the top frame, each of the slide grooves is slidably connected with a slider of an L-shaped structure, a second connecting rod is rotatably connected between the tops of the plurality of sliders and the slip ring, and the plurality of support rods are fixedly installed on the bottoms of the plurality of sliders respectively and one by one.

[0014] Preferably, a screw rod is rotatably connected between the U-shaped frame and the top frame, and the slip ring is screwed and connected to the outside of the screw rod.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] (1) The present invention is provided with support rods. When clamping the hose, the bottoms of the multiple support rods are inserted into the hose ends, so that the multiple support rods play an internal supporting role on the inner wall of the hose. In this way, a larger clamping force can always be used when the clamping mechanism clamps different hose ends. The presence of the multiple support rods will not cause the hose ends to deform and affect the measurement of the bending force and the bending radius. Therefore, different hoses can be clamped without adjusting the clamping force, thereby simplifying the clamping steps and improving efficiency.

[0017] (2) The present invention is provided with a slide and a first connecting rod. When the pneumatic push rod drives the clamping plate to approach the clamping pad, the two first connecting rods push the slide to move at the end of the U-shaped frame, so that the U-shaped frame slides on the two guide rods, so that the center of the top frame and the multiple support rods at the bottom of the top frame are always in the middle of the clamping plate and the clamping pad. When the clamping plate and the clamping pad clamp the end of the hose, the multiple support rods will not generate lateral unbalanced force on the hose to affect the measurement result.

[0018] (3) As described above, the arrangement of the slide and the first connecting rod enables the end of the hose to be directly slid from the bottom to the outside of the multiple support rods during clamping, and the end of the hose is made to contact the bottom of the top frame, and then the pneumatic push rod is started to complete the clamping. There is no need to align the end of the hose with the clamp plate and the top of the clamping pad separately, thereby improving the clamping efficiency.

[0019] (4) The present invention is provided with a screw rod, a slip ring, a second connecting rod and a slider. The slip ring is moved up and down by rotating the screw rod, so that the slider is pushed to move in the slide groove on the top frame through the second connecting rod, and then the support rod is driven to move, thereby changing the range surrounded by the outermost sides of the multiple support rods, so that it can be applied to the internal support operation of the hoses with different apertures, and then the bending force of the hoses with different apertures can be detected, thereby increasing practicality.

[0020] (5) The present invention is provided with a screw, a pointer and a scale, and the screw drives the slide to move to achieve precise adjustment of the minimum bending radius of the hose, thereby avoiding the hose from being broken due to excessive extrusion distance, resulting in the scrapping of the sample. At the same time, pointers at the bottom of the two clamping pads and a scale are set on the base, which is convenient for intuitively observing the bending radius of the hose and improving efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A perspective view of the present invention;

[0022] Figure 2 is a cross-sectional view of the present invention;

[0023] Figure 3 It is a three-dimensional diagram of the slide assembly of the present invention;

[0024] Figure 4 It is a stereogram of the clamping mechanism assembly of the present invention;

[0025] Figure 5 It is a cross-sectional view of the clamping mechanism assembly of the present invention;

[0026] Figure 6 It is a three-dimensional diagram of the slip ring assembly of the present invention;

[0027] Figure 7 It is a cross-sectional view of the pneumatic push rod assembly of the present invention;

[0028] In the figure: 1-base, 2-column, 3-motor, 4-guide rail frame, 5-cylinder, 6-U-frame, 7-slide, 8-first connecting rod, 9-piston rod, 10-clamp, 11-screw, 12-top frame, 13-pressure sensor, 14-fixed frame, 15-mounting plate, 16-clamping pad, 17-scale, 18-pointer, 19-slide, 20-screw, 21-guide rod, 22-slide, 23-second connecting rod, 24-slip ring, 25-support rod, 26-slider. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] See also Figure 1-Figure 7 As shown, the present invention provides the following technical solutions:

[0031] A hose minimum bending radius bending force detection device comprises a base 1 and two columns 2 fixedly mounted on the base 1, wherein a fixing frame 14 is fixedly mounted on one side of one of the columns 2, a guide frame 4 is fixedly mounted between the two columns 2, a slide 19 is slidably connected to the guide frame 4, a mounting plate 15 is provided on one side of the slide 19 and the fixing frame 14, and the two mounting plates 15 are arranged opposite to each other, a pressure sensor 13 is provided between the fixing frame 14 and the adjacent mounting plates 15, a clamping mechanism is provided on the two mounting plates 15, two guide rods 21 are fixedly mounted on both sides of the two mounting plates 15, an inverted U-shaped frame 6 is slidably connected between the two groups of guide rods 21, a top frame 12 is fixedly mounted in the middle of the two U-shaped frames 6, and a plurality of support rods 25 are evenly arranged circumferentially at the bottom of the two top frames 12;

[0032] The mounting plate 15 on one side of the slide 19 is fixedly connected to the slide 19, the mounting plate 15 on one side of the fixing frame 14 is rotatably connected to the bottom of the fixing frame 14, and the pressure sensor 13 is located above the rotatable connection between the fixing frame 14 and the corresponding mounting plate 15;

[0033] The clamping mechanism includes a clamping pad 16 fixedly mounted on one side of the mounting plate 15 and two pneumatic push rods penetrating and fixed on the mounting plate 15, and the clamping plate 10 is fixedly mounted on the telescopic ends of the two pneumatic push rods;

[0034] Based on the above disclosed structure, when performing the minimum bending radius bending force detection operation of the hose:

[0035] First, slide the slide 19 on the guide frame 4 to drive the corresponding mounting plate 15 and the clamping mechanism to move, so that the distance between the clamping sides of the two clamping pads 16 in the two clamping mechanisms is equal to the initial bending radius of the hose, and then slide the two ends of the hose onto the outer sides of the two groups of multiple support rods 25, and make the two ends of the hose respectively contact with the bottom of the two top frames 12, so that the two groups of multiple support rods 25 support the inner wall of the hose, and then start the two groups of pneumatic push rods of the two clamping mechanisms respectively to drive the two clamping plates 10 close to the corresponding clamping pads 16, so that the two groups of clamping plates 10 and the clamping pads 16 clamp and fix the two ends of the hose respectively. Due to the presence of multiple support rods 25, the pneumatic push rod can always use a gas source with a relatively high pressure, so that a relatively large clamping force is provided when driving the clamping plate 10 close to the clamping pad 16, and the supporting effect of the multiple support rods 25 will not cause deformation of the hose end, thereby simplifying the clamping steps and improving efficiency.

[0036] The pressure sensor 13 is preferably connected to a pressure value display. The value of the pressure value display connected to the pressure sensor 13 is cleared, and then the slide 19 is slid on the guide frame 4 to drive the corresponding mounting plate 15 to move toward the fixed frame 14, so that the two ends of the hose clamped by the clamping mechanism are close to each other, thereby reducing the bending radius of the hose, until the slide 19 moves to the set position to make the bending radius of the hose at the minimum state. The rebound force exerted on the bending of the hose causes the hose to apply pressure to the clamping pads 16 and the mounting plate 15 on both sides. Then, according to the transmission of force, the magnitude of the force is sensed by the pressure sensor 13 between the fixed frame 14 and the mounting plate 15, so that the rebound force value can be directly read on the pressure value display, and then the magnitude of the bending force can be determined.

[0037] Preferably, regarding the sliding of the slide 19, a screw 20 that is screwed through the slide 19 is rotatably connected in the guide frame 4, and a motor 3 is fixedly installed on the guide frame 4, and the output end of the motor 3 is fixedly connected to one end of the screw 20. Based on this, the motor 3 drives the screw 20 to rotate, so that the slide 19 slides along the guide frame 4 toward the fixed frame 14, thereby driving the mounting plate 15 on one side of the slide 19 and the clamping mechanism to drive the clamped hose end to approach the hose end clamped by the other clamping mechanism, thereby reducing the bending radius of the hose; conversely, the slide 19 moves in the direction away from the fixed frame 14, thereby increasing the bending radius of the hose, thereby avoiding excessive hose extrusion distance and breakage to cause the sample to be scrapped through the precise adjustment of the screw 20.

[0038] In addition, a scale 17 is fixedly mounted on the base 1, and pointers 18 are fixedly mounted on the bottoms of the two clamping pads 16, and one side of the pointer 18 is tangent to the clamping side of the clamping pad 16, and the two pointers 18 are located directly above the scale 17. Based on this, one side of the pointer 18 is tangent to the clamping side of the clamping pad 16, and when the slide 19 moves, the mounting plate 15 drives the clamping pad 16 to move, and then drives the pointer 18 to move above the scale 17, so as to facilitate intuitive observation of the bending radius of the hose.

[0039] As mentioned above, the preferred pneumatic push rod includes a cylinder 5 and a piston slidably connected in the cylinder 5, a piston rod 9 whose end slides out of the cylinder 5 is fixedly mounted on one side of the piston, and a clamp 10 is fixedly connected to the end of the piston rod 9. Gas channels are provided at both ends of the cylinder 5, and the two gas channels are respectively located on both sides of the piston. Based on this, when high-pressure gas is passed into the gas channel on the cylinder 5 away from the end of the piston rod 9, the gas pushes the piston to move so that the piston rod 9 extends out of the cylinder 5, so that the clamp 10 is away from the clamping pad 16; when high-pressure gas is passed into the gas channel on the cylinder 5 close to the end of the piston rod 9, the gas pushes the piston to retract the piston rod 9 back into the cylinder 5, so that the clamp 10 is close to the clamping pad 16 to clamp the end of the hose. Due to the arrangement of multiple support rods 25, a high-pressure gas source can be used uniformly, and there is no need to adjust the pressure of the gas source, which simplifies the clamping steps and improves efficiency.

[0040] In addition, the two ends of the U-shaped frame 6 are slidably connected to the slide 7, and the two slides 7 are rotatably connected to the clamping plate 10 and the mounting frame 15 by the first connecting rod 8. Based on this, when the pneumatic push rod contracts and drives the clamping plate 10 to approach the clamping pad 16, the two first connecting rods 8 on both sides of the slide 7 rotate on the clamping plate 10 and the mounting frame 15 respectively, so that the slide 7 rises at the end of the U-shaped frame 6, so that the slide 7 drives the U-shaped frame 6 to slide on the two guide rods 21 close to the mounting plate 15, and because the two first connecting rods 8 are the same length, the U-shaped frame 6 is always in the middle of the clamping side of the clamping plate 10 and the clamping pad 16, so that the center of the top frame 12 and the multiple support rods 25 at the bottom of the top frame 12 is always in the center of the clamping side of the clamping plate 10 and the clamping pad 16, so that when the clamping plate 10 and the clamping pad 16 clamp the end of the hose, the multiple support rods 25 will not generate lateral unbalanced force on the hose to affect the detection result.

[0041] Preferably, the bottom of the top frame 12 is flush with the top of the clamping pad 16. Based on this, since the rebound force generated by the bending of the hose will be concentrated at the joint position, when clamping the end of the hose, the end of the hose needs to be flush with the top of the clamping pad 16 to more accurately detect the bending force, so that when the end of the hose is slidably sleeved on the outside of the multiple support rods 25, the end of the hose can directly collide with the bottom of the top frame 12, and there is no need to align the end of the hose with the clamping plate 10 and the top of the clamping pad 16 separately, thereby improving the clamping efficiency.

[0042] Furthermore, regarding the plurality of support rods 25, it is preferred to have the following structure:

[0043] A slip ring 24 is slidably provided above the top frame 12, and a plurality of slide grooves 22 are provided in a circumferential array on the top frame 12, and a slider 26 of an L-shaped structure is slidably connected in each slide groove 22, and a second connecting rod 23 is rotatably connected between the top of the plurality of sliders 26 and the slip ring 24, and a plurality of support rods 25 are fixedly installed on the bottom of the plurality of sliders 26 in a one-to-one correspondence;

[0044] A screw rod 11 is rotatably connected between the U-shaped frame 6 and the top frame 12 , and a slip ring 24 is screwed and connected to the outer side of the screw rod 11 .

[0045] As can be seen from the above, rotating the screw 11 causes the slip ring 24 to move downward along the screw 11, so that the multiple second connecting rods 23 respectively push the multiple sliders 26 to slide outward in the corresponding slide grooves 22, thereby driving the multiple support rods 25 to slide outward, increasing the range surrounded by the outermost sides of the multiple support rods 25, which is used to provide internal support for hoses with larger apertures; conversely, rotating the screw 11 causes the slip ring 24 to move upward along the screw 11, reducing the range surrounded by the outermost sides of the multiple support rods 25, which is used to provide internal support for hoses with smaller apertures, so that the multiple support rods 25 can provide internal support for hoses with different apertures, thereby increasing practicality.

[0046] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hose minimum bending radius bending force detection device, characterized by: The invention comprises a base (1) and two columns (2) fixedly mounted on the base (1), wherein a fixing frame (14) is fixedly mounted on one side of one of the columns (2), a guide rail frame (4) is fixedly mounted between the two columns (2), a slide seat (19) is slidably connected to the guide rail frame (4), a mounting plate (15) is provided on one side of the slide seat (19) and the fixing frame (14), and the two mounting plates (15) are arranged opposite to each other, a pressure sensor (13) is provided between the fixing frame (14) and the adjacent mounting plate (15), a clamping mechanism is provided on the two mounting plates (15), two guide rods (21) are fixedly mounted on both sides of the two mounting plates (15), an inverted U-shaped frame (6) is slidably connected between the two groups of guide rods (21), a top frame (12) is fixedly mounted in the middle of the two U-shaped frames (6), and a plurality of support rods (25) are evenly arranged at the bottom of the two top frames (12) in a circumferential direction.

2. The hose minimum bending radius bending force detection device according to claim 1 is characterized by: The mounting plate (15) on one side of the slide (19) is fixedly connected to the slide (19), the mounting plate (15) on one side of the fixed frame (14) is rotatably connected to the bottom of the fixed frame (14), and the pressure sensor (13) is located above the rotatable connection between the fixed frame (14) and the corresponding mounting plate (15).

3. The hose minimum bending radius bending force detection device according to claim 1 is characterized by: A screw rod (20) which is screwed and penetrates the slide seat (19) is rotatably connected inside the guide rail frame (4), and a motor (3) is fixedly mounted on the guide rail frame (4), and an output end of the motor (3) is fixedly connected to one end of the screw rod (20).

4. The hose minimum bending radius bending force detection device according to claim 1, characterized in that: The clamping mechanism comprises a clamping pad (16) fixedly mounted on one side of a mounting plate (15) and two pneumatic push rods penetrating and fixed on the mounting plate (15), wherein clamping plates (10) are fixedly mounted on the telescopic ends of the two pneumatic push rods.

5. The hose minimum bending radius bending force detection device according to claim 4 is characterized by: The pneumatic push rod comprises a cylinder (5) and a piston slidably connected in the cylinder (5); a piston rod (9) whose end slides out of the cylinder (5) is fixedly mounted on one side of the piston; the clamping plate (10) is fixedly connected to the end of the piston rod (9); gas channels are provided at both ends of the cylinder (5), and the two gas channels are respectively located on both sides of the piston.

6. The minimum bending radius bending force detection device for a hose according to claim 4, characterized in that: The bottom of the top frame (12) is flush with the top of the clamping pad (16).

7. The hose minimum bending radius bending force detection device according to claim 4, characterized in that: A scale (17) is fixedly mounted on the base (1), and pointers (18) are fixedly mounted on the bottoms of the two clamping pads (16), with one side of the pointer (18) being tangent to the clamping side of the clamping pad (16), and the two pointers (18) being located directly above the scale (17).

8. The hose minimum bending radius bending force detection device according to claim 4, characterized in that: The two ends of the U-shaped frame (6) are slidably connected to the slides (7), and the two slides (7) are rotatably connected to the clamping plate (10) and the mounting frame (15) by a first connecting rod (8).

9. The hose minimum bending radius bending force detection device according to claim 8, characterized in that: A slip ring (24) is slidably provided above the top frame (12), and a plurality of slide grooves (22) are provided in a circumferential array on the top frame (12), and a sliding block (26) of an L-shaped structure is slidably connected in each of the slide grooves (22), and a second connecting rod (23) is rotatably connected between the tops of the plurality of sliding blocks (26) and the slip ring (24), and the plurality of support rods (25) are fixedly mounted on the bottoms of the plurality of sliding blocks (26) in a one-to-one correspondence.

10. The hose minimum bending radius bending force detection device according to claim 9, characterized in that: A screw rod (11) is rotatably connected between the U-shaped frame (6) and the top frame (12), and the slip ring (24) is screwed and connected to the outside of the screw rod (11).

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