Endoscope insertion tube hardness testing device

Abstract

An endoscope insertion tube hardness testing device comprises a rack, an insertion tube supporting mechanism is arranged on the rack, a hardness testing mechanism is arranged on the upper portion of the insertion tube supporting mechanism in a crossing mode, the insertion tube supporting mechanism comprises two supporting seats, and a lower supporting block and an upper supporting block which are used for clamping an insertion tube are arranged on the supporting seats. The upper supporting block is erected on the upper portion of the supporting base in an up-down elastic telescopic mode. The hardness testing mechanism is erected between the two supporting seats, the hardness testing mechanism comprises a pressure gauge which is arranged above the insertion pipe and can ascend and descend, a rubber pressing head for pressing the insertion pipe is arranged at the lower end of the pressure gauge, a proximity sensor is arranged below the insertion pipe, and a controller is further arranged on one side of the rack. The testing device effectively solves the problems that an existing testing device damages an insertion part and cannot be suitable for insertion parts with different outer diameters, and the reliability and adaptability of the testing device are improved.

Description

Technical Field

[0001] The utility model belongs to the field of testing instruments, and relates to a pipe testing device, in particular to an endoscope insertion tube hardness testing device. Background Art

[0002] An endoscope is a medical device that needs to be inserted into the human body for visual inspection of the internal organs. An endoscope generally includes an insertion tube, optical and electronic devices, etc. If the insertion tube is too soft, it is easy to bend and deform during the insertion process, while if the insertion tube is too hard, it will cause damage to human tissues. Therefore, the hardness of the insertion tube of the endoscope needs to be maintained within a reasonable range, which requires testing the hardness of the endoscope insertion tube during the production process of the instrument.

[0003] In the prior art, most of the hardness testing devices for the insertion part of electronic endoscopes basically adopt the form of Figure 1 Using a detection block to press the insertion part into a deformation limiting block to obtain the hardness test value of the insertion part. The above structure has technical defects. The insertion part includes an insertion tube, optical and electronic devices, etc. Pressing the insertion part into the deformation limiting block will cause irreversible damage to the insertion part; moreover, it cannot be applied to the hardness testing of insertion parts with different outer diameters. For example, the outer diameters of the insertion parts of electronic choledochoscopes and colonoscopes are quite different; in addition, the distance and height of the test support points for insertion parts with different outer diameters also need to be adjusted, and the above structure cannot be simply realized. Summary of the Utility Model

[0004] The purpose of the utility model is to solve the problems that the existing endoscope insertion tube hardness testing device will cause irreversible damage to the insertion part and cannot adapt to and adjust insertion tubes with different outer diameters, and to provide an endoscope insertion tube hardness testing device, which effectively solves the problems of damaging the insertion part by the existing testing device and not being applicable to insertion parts with different outer diameters, and improves the reliability and adaptability of the testing device.

[0005] The technical solution adopted by the utility model to solve its technical problems is: an endoscope insertion tube hardness testing device, including a frame, an insertion tube support mechanism is arranged on the frame, a hardness testing mechanism is straddled above the insertion tube support mechanism, the insertion tube support mechanism includes two support seats, a lower support block and an upper support block for clamping the insertion tube are arranged on the support seats, and the upper support block is elastically telescopic up and down and is arranged on the upper part of the support seat; the hardness testing mechanism is arranged between the two support seats, the hardness testing mechanism includes a liftable pressure gauge arranged above the insertion tube, a rubber pressing head for pressing the insertion tube is arranged at the lower end of the pressure gauge, a proximity sensor is arranged below the insertion tube, the proximity sensor is aligned with the pressure gauge up and down, and a controller is also arranged on one side of the frame.

[0006] In this device, the insertion tube is supported by being mounted on two support seats. Between the two support seats, the hardness of the insertion tube is tested by pressing down with a hardness testing mechanism. The upper limit of the support seat is an elastic lift, so the distance between the upper limit block and the lower limit block can change adaptively, and it can adapt to the hardness testing of insertion tubes with different outer diameters. The hardness testing mechanism uses a pressure gauge to press down until the lower wall of the insertion tube touches the proximity sensor, and then the hardness of the insertion tube is determined by the pressure reading of the controller. After the hardness of one position of the insertion tube is tested, it can be rotated by an angle to continue the test, or after being axially pulled out, the hardness test of the next point can be carried out, so as to perform multiple tests on each point and each rotation angle of the same point of the insertion tube, and obtain the complete hardness data of each part of the insertion tube. This device can be used to test the hardness of insertion tubes with different outer diameters. At the same time, when being extruded and deformed, the insertion part will not be excessively bent, there is no damage to the insertion part, and the hardness test results of adjacent points will not be affected by the test damage of a certain point of the insertion part. The controller can control the adjustment of the support seat, the start and stop of the pressure gauge, and the output of data.

[0007] Preferably, the support seats of the insertion tube support mechanism are horizontally slidably arranged. The insertion tube support mechanism includes a base. On the base, horizontal chutes are respectively arranged corresponding to the two support seats. The support seats are slidably arranged in the horizontal chutes. A support adjustment motor and a support adjustment belt are arranged below the base. The support adjustment belt is horizontally arranged and pulleys are arranged at both ends. One of the pulleys is connected to the output end of the support adjustment motor; the two support seats are respectively fixed to the return section and the forward section of the support adjustment belt. The distance between the two support seats can be adjusted to meet the different test support requirements of different insertion tubes. When adjusting the distance, the support adjustment motor drives the support adjustment belt to rotate. When the support adjustment belt rotates, the two support seats slide horizontally inwards or outwards synchronously. This synchronous adjustment form can ensure that the hardness testing mechanism is centered between the two support seats.

[0008] Preferably, the support seat includes an outer support seat frame and an inner support seat frame. The outer support seat frame is a U-shaped structure with an open upper end. A plurality of horizontal card slots are arranged on the inner sides of the two vertical arms of the outer support seat frame. A plurality of horizontal card strips are arranged on the outer walls of both sides of the inner support seat frame. The horizontal card strips are adapted to any horizontal card slot; a lower support block and an upper support block are arranged on the inner support seat frame. Through the selective cooperation of the horizontal card strips and the horizontal card slots, the clamping height between the inner support seat frame and the outer support seat frame can be adjusted, so as to adjust the support height to meet the changing support height requirements of insertion tubes with different outer diameters.

[0009] Preferably, guide grooves are correspondingly arranged on both sides of the inner support seat frame. Convex shafts that can be inserted along the guide grooves are arranged at both ends of the lower support block and the upper support block. The lower support block and the upper support block can be quickly assembled and disassembled by inserting the convex shafts into the guide grooves.

[0010] Preferably, the lower support block is a rotatable support roller, and an arc-shaped groove is formed in the circumferential direction of the lower support block. The lower support block can rotate as the insertion tube moves axially, reducing the moving resistance of the insertion tube.

[0011] Preferably, a vertical guide shaft is provided at the upper end of the upper support block, a spring is sleeved outside the vertical guide shaft, the lower surface of the upper support block is a semi-roller surface, and an arc-shaped groove is formed in the lower surface of the lower support block. The opposite side surfaces of the lower support block and the upper support block are adapted to the insertion tube by means of the arc-shaped grooves.

[0012] Preferably, the hardness testing mechanism includes a portal frame, vertical lifting belts are symmetrically arranged on both sides of the portal frame, the pressure gauge is fixedly held between the two lifting belts on both sides, an upper belt shaft is arranged at the upper ends of the two lifting belts, upper belt pulleys are respectively arranged at both ends of the upper belt shaft, a lower belt shaft is arranged at the lower ends of the two lifting belts, lower belt pulleys are respectively arranged at both ends of the lower belt shaft, and a lifting motor is connected to the end of the lower belt shaft.

[0013] Preferably, a pressure gauge sliding block is sleeved outside the pressure gauge, and the pressure gauge is fixedly held by the pressure gauge sliding block and the two lifting belts on both sides respectively.

[0014] Preferably, the lower belt shaft is arranged below the insertion tube support mechanism.

[0015] Preferably, an arc-shaped groove is formed in the lower surface of the rubber indenter.

[0016] The utility model effectively solves the problems of the existing testing device damaging the insertion part and being unable to be applicable to insertion parts with different outer diameters, improving the reliability and adaptability of the testing device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The following further describes the utility model with reference to the drawings.

[0018] Figure 1 FIG. is a schematic side structure diagram of the utility model.

[0019] Figure 2 FIG. is a schematic top view structure diagram of the utility model.

[0020] Figure 3 FIG. is an exploded view of the insertion tube support mechanism of the utility model.

[0021] Figure 4 FIG. is an exploded view of the hardness testing mechanism of the utility model.

[0022] In the figure: 1. Frame, 2. Insertion tube support mechanism, 3. Hardness testing mechanism, 4. Controller, 5. Insertion tube, 21. Base plate, 22. Horizontal chute, 23. Scale, 24. Support base, 25. Support adjustment motor, 26. Support adjustment belt, 27. Belt pulley, 241. Outer frame of support base, 242. Horizontal card slot, 243. Inner frame of support base, 244. Horizontal card strip, 245. Guide slot, 246. Convex shaft, 247. Lower support block, 248. Upper support block, 249. Spring, 31. Gantry frame, 32. Pressure gauge, 33. Rubber indenter, 34. Proximity sensor, 35. Lifting motor, 36. Lifting belt, 37. Pressure gauge sliding block, 38. Upper belt shaft, 39. Upper belt pulley, 40. Lower belt shaft, 41. Lower belt pulley. Detailed implementation mode

[0023] The present utility model will be further described below through specific embodiments in conjunction with the accompanying drawings.

[0024] Embodiment: An endoscope insertion tube hardness testing device, as Figure 1 , 2 shown. This device includes a frame 1, an insertion tube support mechanism 2 is arranged on the frame 1, a hardness testing mechanism 3 is straddled above the insertion tube support mechanism 2, and a controller 4 is also arranged on one side of the frame.

[0025] The structure of the insertion tube support mechanism 2 is as Figure 2 , 3 shown. The insertion tube support mechanism 2 includes two support bases 24, and the test section of the insertion tube is assumed to be between the two support bases. The support base 23 includes an outer frame 241 of the support base and an inner frame 243 of the support base. The outer frame 241 of the support base is a U-shaped structure with an open upper end. A plurality of horizontal card slots 242 are arranged on the inner sides of the two vertical arms of the outer frame 241 of the support base. A plurality of horizontal card strips 244 are arranged on the outer walls of both sides of the inner frame 243 of the support base, and the horizontal card strips 244 are adapted to any horizontal card slot 242; a lower support block 247 and an upper support block 248 are arranged in the inner frame of the support base. Guide slots 245 are correspondingly arranged on both sides of the inner frame 243 of the support base. Convex shafts 246 that can be inserted along the guide slots are arranged at both ends of the lower support block and the upper support block. The lower support block 247 is a rotatable support roller, and an arc-shaped groove is formed in the circumferential direction of the lower support block. A vertical guide shaft is arranged at the upper end of the upper support block 248, a spring 249 is sleeved outside the vertical guide shaft, the lower surface of the upper support block is a semi-roller surface, and an arc-shaped groove is formed in the lower surface of the lower support block.

[0026] The support base 24 of the insertion tube support mechanism 2 is horizontally slidably arranged. The insertion tube support mechanism includes a base 21. Horizontally sliding grooves 22 are respectively arranged on the base 21 corresponding to the two support bases. The support base 24 is slidably arranged in the horizontal sliding groove 22 through a support base outer frame 241. A scale 23 is arranged on the upper surface of the base on the side of the support base. A support adjustment motor 25 and a support adjustment belt 26 are arranged below the base 21. The support adjustment belt is horizontally arranged and pulley wheels 27 are arranged at both ends. One of the pulley wheels is connected to the output end of the support adjustment motor; the support base outer frames 241 of the two support bases 24 pass through the horizontal sliding grooves 22 downward and are respectively fixed to the departure section and the return section of the support adjustment belt 27.

[0027] The hardness testing mechanism 3 is centrally arranged between the two support bases. As Figure 2 , 4 shown, the hardness testing mechanism 3 includes a portal frame 31. Vertically arranged lifting belts 36 are symmetrically arranged on both sides of the portal frame. A pressure gauge sliding block 37 is sleeved outside the pressure gauge 32. The pressure gauge 32 is respectively clamped and fixed to the lifting belts 36 on both sides through the pressure gauge sliding block 37. Upper belt shafts 38 are arranged at the upper ends of the two lifting belts 36. Upper pulley wheels 39 are respectively arranged at both ends of the upper belt shafts. Lower belt shafts 310 are arranged at the lower ends of the two lifting belts 36. Lower pulley wheels 311 are respectively arranged at both ends of the lower belt shafts. The end of the lower belt shaft is connected with a lifting motor 35. The lower belt shaft 310 is arranged below the insertion tube support mechanism 2. A rubber pressing head 33 for pressing the insertion tube is arranged at the lower end of the pressure gauge 32. An arc-shaped groove is arranged on the lower surface of the rubber pressing head. The rubber pressing head 33 is aligned with the central axis of the insertion tube 5 from above. A proximity sensor 34 is arranged below the central axis of the insertion tube. The proximity sensor is vertically aligned with the pressure gauge.

[0028] The controller 4 sets the test support point spacing on the display screen, drives the support adjustment motor to drive the moving blocks of the two support bases to move towards or away from each other to the specified position; adjusts the support height of the support block, passes the insertion tube through the insertion tube support mechanism, provides support by the lower support block, and presses and fixes it by the upper support block; clicks to start the test on the controller display screen, drives the lifting motor to drive the pressure gauge to move up and down. The rubber pressing head of the pressure gauge presses down the midpoint of the test section of the insertion tube. After contacting the proximity sensor, the hardness test value is obtained. Drives the lifting motor to drive the pressure gauge to reset, rotates or moves the insertion section, repeats the above actions to obtain the hardness test values at different positions and different angles of the insertion section. After the test is completed, the controller outputs the hardness test report of the insertion part.

Claims

1. An endoscope insertion tube hardness testing device, comprising a frame, characterized in that: An insertion tube support mechanism is provided on the frame. A hardness testing mechanism is straddled above the upper part of the insertion tube support mechanism. The insertion tube support mechanism includes two support seats. A lower support block and an upper support block for clamping the insertion tube are provided on the support seats. The upper support block is elastically telescopic up and down and is erected on the upper part of the support seat. The hardness testing mechanism is erected between the two support seats. The hardness testing mechanism includes a liftable pressure gauge arranged above the insertion tube. A rubber pressure head for pressing the insertion tube is provided at the lower end of the pressure gauge. A proximity sensor is provided below the insertion tube. The proximity sensor is vertically aligned with the pressure gauge. A controller is also provided on one side of the frame.

2. The hardness testing device for an endoscope insertion tube according to claim 1, wherein: The support seats of the insertion tube support mechanism are slidably arranged horizontally. The insertion tube support mechanism includes a base. Horizontal chutes are respectively provided on the base corresponding to the two support seats. The support seats are slidably arranged in the horizontal chutes. A support adjustment motor and a support adjustment belt are provided below the base. The support adjustment belt is horizontally arranged and belt pulleys are provided at both ends. One of the belt pulleys is connected to the output end of the support adjustment motor. The two support seats are respectively fixed to the return section and the forward section of the support adjustment belt.

3. An endoscope insertion tube hardness testing device according to claim 1 or 2, characterized in that: The support seat includes a support seat outer frame and a support seat inner frame. The support seat outer frame is a U-shaped structure with an open upper end. A plurality of horizontal card slots are provided on the inner sides of the two vertical arms of the support seat outer frame. A plurality of horizontal card strips are provided on the outer walls of both sides of the support seat inner frame. The horizontal card strips are adapted to any of the horizontal card slots. The lower support block and the upper support block are arranged on the support seat inner frame.

4. An endoscope insertion tube hardness testing device according to claim 1 or 2, characterized in that: Guide grooves are correspondingly provided on both sides of the support seat inner frame. Convex shafts that can be inserted along the guide grooves are provided at both ends of the lower support block and the upper support block.

5. An endoscope insertion tube hardness testing device according to claim 1 or 2, characterized in that: The lower support block is a rotatable support roller. An arc-shaped groove is provided on the circumferential surface of the lower support block.

6. An endoscope insertion tube hardness testing device according to claim 1 or 2, characterized in that: A vertical guide shaft is provided at the upper end of the upper support block. A spring is sleeved outside the vertical guide shaft. The lower surface of the upper support block is a semi-roller surface. An arc-shaped groove is provided on the lower surface of the lower support block.

7. An endoscope insertion tube hardness testing device according to claim 1 or 2, characterized in that: The hardness testing mechanism includes a portal frame. Vertical lifting belts are symmetrically provided on both sides of the portal frame. The pressure gauge is clamped and fixed between the two lifting belts on both sides. Upper belt shafts are provided at the upper ends of the two lifting belts. Upper belt pulleys are respectively provided at both ends of the upper belt shafts. Lower belt shafts are provided at the lower ends of the two lifting belts. Lower belt pulleys are respectively provided at both ends of the lower belt shafts. The end of the lower belt shaft is connected with a lifting motor.

8. An endoscope insertion tube hardness testing device according to claim 7, characterized in that: A pressure gauge sliding block is sleeved outside the pressure gauge. The pressure gauge is clamped and fixed to the lifting belts on both sides through the pressure gauge sliding block respectively.

9. An endoscope insertion tube hardness testing device according to claim 7, characterized in that: The lower belt shaft is arranged below the insertion tube support mechanism.

10. An endoscope insertion tube hardness testing device according to claim 1 or 2, characterized in that: An arc-shaped groove is provided on the lower surface of the rubber pressure head.

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