Bourdon tube fixing device

Abstract

The utility model relates to the technical field of bourdon tube fixing, in particular to a bourdon tube fixing device which comprises a mounting seat and two mounting assemblies arranged in a mirror image mode, the inner wall of the mounting seat is rotatably connected with a first adjusting hand wheel, and the inner wall of the mounting seat is symmetrically and slidably connected with two sliding seats. The two sliding seats are connected with the forward and reverse threaded sections of the first adjusting hand wheel in a matched mode correspondingly, each installation assembly comprises an installation frame fixedly connected with the corresponding sliding seat, a lifting plate is slidably connected to the inner wall of each installation frame, and a plurality of installation holes distributed in a linear array mode are formed in each lifting plate. Each installation assembly further comprises a sliding sleeve arranged on one installation assembly and a sliding rod arranged on the other installation assembly. The two ends of the bourdon tube are arranged on the sliding sleeve and the sliding rod in a sleeving mode respectively, rapid mounting and dismounting of the bourdon tube are achieved, compared with a split type bolt locking structure adopted in the prior art, the clamping positions of multiple bolts do not need to be repeatedly adjusted, and the bourdon tube mounting and testing efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of spring tube fixing technology, and more specifically, to a spring tube fixing device. Background Technology

[0002] Most minimally invasive endoscopic medical devices consist of an end effector and a handle. The handle typically uses a traction wire to drive the end effector, thus completing the minimally invasive surgery. Generally, the traction wire is surrounded by a spring tube connected to one end of the handle. The spring tube is a flexible tubular component, usually made of metal or alloy. Its main function is to protect the traction wire, ensuring it is not damaged during endoscope use, bending, or exposure to external forces. Simultaneously, it provides flexibility to the minimally invasive medical device, allowing the user to flexibly adjust the angle and position of the device for easier observation of different areas.

[0003] In existing technologies, during the production testing of Bourdon tubes, it is necessary to simulate the pressure, bending, and other working conditions of the Bourdon tubes in actual operation to test key parameters such as pressure resistance, fatigue life, sealing performance, and deformation characteristics. Existing testing devices often use a split-type bolt locking method, with multiple independently adjustable bolts securing both ends of the Bourdon tube. However, due to the diverse specifications of Bourdon tubes, different diameter products require repeated adjustments to the clamping positions of multiple bolts, and this frequent bolt tightening and loosening reduces testing efficiency. Utility Model Content

[0004] This utility model proposes a spring tube fixing device, which fits the two ends of the spring tube onto the sliding sleeve and the sliding rod respectively, enabling the quick installation and removal of the spring tube and improving the testing efficiency of the spring tube.

[0005] This utility model proposes a spring tube fixing device, which includes a mounting base and two mirror-arranged mounting components;

[0006] The inner wall of the mounting base is rotatably connected to a first adjusting handwheel, and the inner wall of the mounting base is symmetrically slidably connected to two slide blocks, which are respectively engaged with the forward and reverse threaded sections of the first adjusting handwheel.

[0007] Each mounting component includes a mounting frame that is fixedly connected to the corresponding slide. A lifting plate is slidably connected to the inner wall of the mounting frame. The lifting plate has multiple mounting holes arranged in a linear array.

[0008] Each mounting component also includes a sliding sleeve disposed on one mounting component and a sliding rod disposed on another mounting component. The sliding sleeve and the sliding rod are respectively threadedly connected to the corresponding mounting holes and form a sliding fit. The outer ends of the sliding sleeve and the sliding rod are provided with threaded limit caps.

[0009] Preferably, it also includes two sets of height adjustment mechanisms. Each set of height adjustment mechanisms includes a connecting block fixedly connected to the lifting plate, a fixing plate fixedly connected to the mounting frame, and a second adjusting handwheel rotatably connected to the top of the connecting block. The top of the second adjusting handwheel passes through the fixing plate and is threadedly connected to it.

[0010] Preferably, it also includes a bending test assembly, which includes a third adjusting handwheel rotatably connected to the mounting base, a support frame rotatably connected to the third adjusting handwheel, and a stop plate slidably disposed within the support frame. A stop block is fixedly connected to the top of the stop plate, and the bottom of the support frame is fixed to the top of the mounting base.

[0011] Preferably, both the sliding sleeve and the sliding rod adopt a two-section telescopic structure. The telescopic structure includes a first connecting part and a second connecting part that are inserted into each other. The end of the first connecting part is provided with an axially extending connecting groove, and the end of the second connecting part is fixedly provided with a protrusion that slides with the connecting groove.

[0012] Preferably, the protrusion has a rotating shaft embedded in it, and the two ends of the rotating shaft extend into the shaft holes on the side wall of the connecting groove to form a rotating pair, so that the first connecting part and the second connecting part form a hinged connection.

[0013] Preferably, the outer wall of the second connecting part is provided with an external thread and a locking threaded sleeve is fitted on it. When the threaded sleeve is tightened, its end presses against the outer wall of the first connecting part to achieve axial fixation of the two-section structure.

[0014] Preferably, the sliding mating surface between the slide and the mounting base is provided with a ball linear guide structure. The guide structure includes a slider fixed to the bottom of the slide and a guide groove installed in the mounting base. The slider is embedded with a set of circulating balls.

[0015] The beneficial effects of this utility model, achieved through the above technical solution, are as follows:

[0016] 1. In this utility model, the two ends of the spring tube are respectively fitted onto the sliding sleeve and the sliding rod, which enables the quick installation and disassembly of the spring tube. Compared with the split bolt locking structure used in the prior art, this design does not require repeated adjustment of the clamping position of multiple bolts, thus improving the efficiency of spring tube installation and testing.

[0017] 2. In this utility model, the locking threaded sleeve is rotated to the second connecting part. At this time, the first connecting part can rotate around the pivot. The third adjusting handwheel is rotated to make the abutment slide in the support frame. The abutment block at the top of the abutment gradually approaches the spring tube and applies pressure, causing the spring tube to bend upward. This gives the device the function of performing bending tests on the spring tube, enriches the test types of the device, and meets the user's needs for various performance tests of the spring tube. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the installation structure of the lifting plate of this utility model;

[0020] Figure 3 This is a schematic diagram of the mounting structure of the protrusion of this utility model;

[0021] Figure 4 This is a schematic diagram of the installation structure of the abutment plate of this utility model.

[0022] In the diagram: 1. Mounting base; 2. First adjusting handwheel; 3. Slide; 4. Mounting frame; 5. Lifting plate; 6. Mounting hole; 7. Connecting block; 8. Fixing plate; 9. Second adjusting handwheel; 10. Sliding sleeve; 11. Limit cap; 12. Sliding rod; 13. Protrusion; 101. First connecting part; 102. Second connecting part; 103. Connecting groove; 14. Rotating shaft; 15. Threaded sleeve; 16. Support frame; 17. Third adjusting handwheel; 18. Support plate; 19. Support block. Detailed Implementation

[0023] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this utility model. In this utility model, unless otherwise expressly specified and limited, the term "fixed connection" should be interpreted broadly. For example, "fixed connection" can mean fixed installation, detachable connection, or integral; it can mean mechanical connection or electrical connection; it can mean direct connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0024] like Figure 1 and Figure 2 As shown, a spring tube fixing device includes a mounting base 1 and two mirror-arranged mounting components. The inner wall of the mounting base 1 is rotatably connected to a first adjusting handwheel 2, and the inner wall of the mounting base 1 is symmetrically slidably connected to two slide blocks 3. The two slide blocks 3 are respectively engaged with the forward and reverse threaded sections of the first adjusting handwheel 2.

[0025] Each mounting component includes a mounting frame 4 fixedly connected to the corresponding slide 3, and a lifting plate 5 slidably connected to the inner wall of the mounting frame 4. The lifting plate 5 has multiple mounting holes 6 arranged in a linear array.

[0026] Each mounting component also includes a sliding sleeve 10 disposed in one mounting component and a sliding rod 12 disposed in another mounting component. The sliding sleeve 10 and the sliding rod 12 are respectively threadedly connected to the corresponding mounting holes 6 and form a sliding fit. The outer ends of the sliding sleeve 10 and the sliding rod 12 are provided with threaded limit caps 11.

[0027] A spring tube is a flexible tubular component, usually made of metal or alloy. Its main function is to protect the traction wire, ensuring that it is not damaged when the endoscope is used, bent, or subjected to certain external forces. At the same time, it also provides a certain degree of flexibility for minimally invasive medical devices, allowing the operator to flexibly adjust the angle and position of the devices for easier observation of different areas.

[0028] Therefore, in the production testing process of spring tubes, it is necessary to simulate the pressure, bending and other working conditions of spring tubes in actual operation to test key parameters such as pressure resistance, fatigue life, sealing performance and deformation characteristics. Traditional testing devices mostly adopt a split bolt locking structure, which fixes the two ends of the spring tube by multiple independently adjustable fastening bolts. However, due to the variety of spring tube specifications, different tube diameter products require repeated adjustment of the clamping position of multiple bolts, and the frequent bolt tightening and loosening operations reduce the testing efficiency.

[0029] According to the implementation scheme of this application, during the testing of the spring tube, the two ends of the spring tube are respectively fitted onto the sliding sleeve 10 and the sliding rod 12, and the limiting cap 11 limits the two ends of the spring tube, so as to realize the quick installation and disassembly of the spring tube. Compared with the split bolt locking structure used in the traditional design, there is no need to repeatedly adjust the clamping position of multiple bolts, which improves the efficiency of spring tube installation and testing.

[0030] In some embodiments, such as Figure 2 As shown, the device also includes two sets of height adjustment mechanisms. Each set of height adjustment mechanisms includes a connecting block 7 fixedly connected to the lifting plate 5, a fixing plate 8 fixedly connected to the mounting frame 4, and a second adjusting handwheel 9 rotatably connected to the top of the connecting block 7. The top of the second adjusting handwheel 9 passes through the fixing plate 8 and is threadedly connected to it. The height adjustment mechanism can adapt to the installation requirements of spring tubes with different diameters.

[0031] In some embodiments, such as Figure 3 and Figure 4 As shown, the device also includes a bending test assembly, which includes a third adjusting handwheel 17 rotatably connected to the mounting base 1, a support frame 16 rotatably connected to the third adjusting handwheel 17, and a stop plate 18 slidably disposed in the support frame 16. A stop block 19 is fixedly connected to the top of the stop plate 18, and the bottom of the support frame 16 is fixed to the top of the mounting base 1.

[0032] Both the sliding sleeve 10 and the sliding rod 12 adopt a two-section telescopic structure. The telescopic structure includes a first connecting part 101 and a second connecting part 102 that are inserted into each other. The end of the first connecting part 101 is provided with an axially extending connecting groove 103, and the end of the second connecting part 102 is fixedly provided with a protrusion 13 that slides with the connecting groove 103.

[0033] The protrusion 13 has a rotating shaft 14 embedded in it. Both ends of the rotating shaft 14 extend into the shaft holes on the sidewall of the connecting groove 103, forming a rotating pair. This allows the first connecting part 101 and the second connecting part 102 to form a hinged connection. The outer wall of the second connecting part 102 has an external thread and a locking threaded sleeve 15 is fitted onto it. When the threaded sleeve 15 is tightened, its end presses against the outer wall of the first connecting part 101, achieving axial fixation of the two-section structure. The sliding mating surface between the slide block 3 and the mounting base 1 has a ball linear guide structure. This guide structure includes a slider fixed to the bottom of the slide block 3 and a guide groove installed in the mounting base 1. The slider has a set of circulating balls embedded in it. The bending test assembly enables bending tests on the spring tube, enriching the test types of the device and meeting the user's needs for various performance tests of the spring tube.

[0034] Working principle: Rotate the first adjusting handwheel 2 to make the two slide blocks 3 slide in opposite directions along the inner wall of the mounting base 1, thereby driving the mounting frame 4 fixed on the slide block 3 to move and adjust the distance between the two mounting frames 4 according to the length of the spring tube;

[0035] Rotate the second adjusting handwheel 9, and the lifting plate 5 slides along the inner wall of the mounting frame 4. Adjust the height of the mounting hole 6 on the lifting plate 5 so that the sliding sleeve 10 and the sliding rod 12 can be at a suitable height to accommodate spring tubes of different diameters.

[0036] Place the two ends of the spring tube onto the sliding sleeve 10 and the sliding rod 12 respectively, and rotate the limiting cap 11 to limit the two ends of the spring tube to complete the installation of the spring tube. Adjust the distance between the two sliding blocks 3 and squeeze the two ends of the spring tube. When the spring tube elastically contracts, the elasticity of the spring tube is tested.

[0037] When a bending test is required on the spring tube, the locking threaded sleeve 15 is rotated onto the second connecting part 102. At this time, the first connecting part 101 can rotate around the pivot 14. The third adjusting handwheel 17 is rotated so that the abutment 18 slides in the support frame 16. The abutment block 19 at the top of the abutment 18 gradually approaches the spring tube and applies pressure, causing the spring tube to bend upward for testing.

[0038] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A spring tube fixing device, characterized in that, include: Mounting base (1), with a first adjusting handwheel (2) rotatably connected to its inner wall, and two sliding blocks (3) symmetrically slidably connected to the inner wall of mounting base (1), the two sliding blocks (3) respectively engaging with the forward and reverse threaded sections of the first adjusting handwheel (2); The two mirror-mounted mounting components each include a mounting frame (4) fixedly connected to the corresponding slide (3), and a lifting plate (5) slidably connected to the inner wall of the mounting frame (4). The lifting plate (5) has multiple mounting holes (6) arranged in a linear array. A sliding sleeve (10) is provided on one of the mounting components and a sliding rod (12) is provided on the other mounting component. The sliding sleeve (10) and the sliding rod (12) are respectively threaded into the corresponding mounting holes (6) and form a sliding fit. The outer ends of the sliding sleeve (10) and the sliding rod (12) are provided with threaded limit caps (11).

2. The spring tube fixing device according to claim 1, characterized in that: It also includes two sets of height adjustment mechanisms. Each set of height adjustment mechanisms includes a connecting block (7) fixedly connected to the lifting plate (5), a fixing plate (8) fixedly connected to the mounting frame (4), and a second adjusting handwheel (9) rotatably connected to the top of the connecting block (7). The top of the second adjusting handwheel (9) passes through the fixing plate (8) and is threadedly connected to it.

3. The spring tube fixing device according to claim 2, characterized in that: It also includes a bending test assembly, which includes a third adjusting handwheel (17) rotatably connected to the mounting base (1), a support frame (16) rotatably connected to the third adjusting handwheel (17), and a stop plate (18) slidably disposed in the support frame (16). A stop block (19) is fixedly connected to the top of the stop plate (18), and the bottom of the support frame (16) is fixed to the top of the mounting base (1).

4. The spring tube fixing device according to claim 3, characterized in that: Both the sliding sleeve (10) and the sliding rod (12) adopt a two-section telescopic structure. The telescopic structure includes a first connecting part (101) and a second connecting part (102) that are inserted into each other. The end of the first connecting part (101) is provided with an axially extending connecting groove (103), and the end of the second connecting part (102) is fixedly provided with a protrusion (13) that slides with the connecting groove (103).

5. The spring tube fixing device according to claim 4, characterized in that: The protrusion (13) has a rotating shaft (14) embedded in it. The two ends of the rotating shaft (14) extend into the shaft hole on the side wall of the connecting groove (103) to form a rotating pair, so that the first connecting part (101) and the second connecting part (102) form a hinged connection.

6. The spring tube fixing device according to claim 5, characterized in that: The outer wall of the second connecting part (102) is provided with an external thread and a locking threaded sleeve (15) is fitted on it. When the threaded sleeve (15) is tightened, its end presses against the outer wall of the first connecting part (101) to achieve axial fixation of the two-section structure.

7. The spring tube fixing device according to claim 6, characterized in that: The sliding mating surfaces of the slide (3) and the mounting base (1) are provided with a ball linear guide structure.

8. The spring tube fixing device according to claim 7, characterized in that: The guide rail structure includes a slider fixed to the bottom of the slide block (3) and a guide rail groove installed in the mounting base (1), with a set of circulating balls embedded in the slider.

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