A tensioning force detection device for expansion sleeves

Abstract

This utility model relates to the field of expansion sleeve detection technology and discloses an expansion sleeve tension force detection device, including: a bracket and a pressure applying mechanism installed on the top of the bracket to pressurize the expansion sleeve; an inner seat and an outer ring seat installed at the bottom of the bracket, wherein the inner seat is disposed inside the outer ring seat and the axis of the inner seat and the axis of the outer ring seat are both arranged on the same straight line; multiple sets of inner display mechanisms are installed at equal angles on the inner seat; through the cooperation between the inner seat, the outer ring seat, the inner display mechanism and the outer display mechanism, the inner display mechanism set at equal angles on the inner seat can detect and display the internal pressure when the expansion sleeve is locked, while the multiple sets of outer display mechanisms on the outer ring seat can display the external support pressure generated when the expansion sleeve is locked, thereby facilitating the simultaneous detection of the internal fastening force and the external support force when the expansion sleeve is locked, and improving the efficiency of expansion sleeve tension force detection.

Description

Technical Field

[0001] This utility model relates to the field of expansion sleeve detection technology, specifically to an expansion sleeve tension detection device. Background Technology

[0002] In the field of mechanical transmission, expansion sleeves are widely used in industries such as automobile manufacturing, wind power equipment, and machine tool processing due to their advantages such as keyless connection, convenient disassembly and assembly, and large torque transmission. As equipment manufacturing develops towards high precision and high reliability, the requirements for the connection performance of expansion sleeves are becoming increasingly stringent. Tension force, as the core parameter for measuring its connection strength, directly affects the safety and stability of equipment operation.

[0003] However, the tension of the expansion sleeve needs to be tested before use. The traditional testing method is to measure the change distance of the expansion sleeve with a vernier caliper. This testing method is slow and relies heavily on human experience. It cannot accurately quantify the actual tension effect. Therefore, the efficiency of testing the tension of the expansion sleeve needs to be further improved. So we need to propose a tension testing device for expansion sleeves. Utility Model Content

[0004] The purpose of this utility model is to provide a tensioning force detection device for a tension sleeve. By setting an internal tensioning force display mechanism and an external tensioning force display mechanism, it can simultaneously display the internal tensioning effect and the external tensioning effect of the tension sleeve, so as to facilitate and quickly detect the tensioning force of the tension sleeve, improve the efficiency of tensioning force detection of the tension sleeve, and solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a tensioning force detection device for a sleeve, comprising:

[0006] A support frame, and a pressure-applying mechanism installed on top of the support frame to apply pressure to the expansion sleeve;

[0007] An inner seat and an outer ring seat are installed at the bottom of the bracket. The inner seat is located inside the outer ring seat, and the axis of the inner seat and the axis of the outer ring seat are both located on the same straight line.

[0008] Multiple sets of inner display mechanisms are installed at equal angles on the inner seat, and multiple sets of outer display mechanisms are installed at equal angles on the outer ring seat. The tension force during the tightening of the expansion sleeve is detected by the multiple sets of inner display mechanisms and multiple sets of outer display mechanisms.

[0009] Preferably, each of the multiple sets of the inner display mechanism includes an inner top block and a transparent tube. A first slider is fixedly connected to one side of the inner top block. An inner piston is provided at one end of the first slider inserted into the inner seat. A needle is provided at the end of the transparent tube.

[0010] Preferably, an oil injection pipe is provided in the middle of the upper surface of the inner seat, and multiple sets of hydraulic oil chambers for the sliding installation of the first slider are opened on the outer side of the inner seat. The multiple sets of hydraulic oil chambers are connected to the oil injection pipe through oil passages. The side view cross section of the hydraulic oil chamber is U-shaped. A sealing hole connected to the hydraulic oil chamber is opened on the upper surface of the inner seat, and a first rubber plug is embedded in the sealing hole. The transparent tube is connected to the hydraulic oil chamber through the first rubber plug by a needle. Two sets of locking blocks that engage with the inner seat are provided at the end of the transparent tube.

[0011] Preferably, the inner side of the outer ring seat has multiple sets of straight oil cavities for mounting the external display mechanism, the upper surface of the outer ring seat has oil injection holes that communicate with the multiple sets of straight oil cavities, and the upper surface of the outer ring seat is provided with scale lines.

[0012] Preferably, the external display mechanism includes a second slider and a sealing plug installed at both ends of the straight oil chamber. A pressure gauge for detecting the pressure inside the straight oil chamber is installed on the sealing plug. An outer top block is fixedly connected to one end of the second slider. An arc-shaped groove that abuts against the outside of the expansion sleeve is opened on one side of the outer top block. An outer piston is provided at one end of the second slider located inside the straight oil chamber. A second rubber plug is embedded in the oil injection hole.

[0013] Preferably, it also includes a sealing element installed inside the oil injection pipe. The sealing element mainly consists of a threaded sleeve, a connecting rod, and an isolation plug. The threaded sleeve is fixed to the upper end of the connecting rod, the isolation plug is fixed to the lower end of the connecting rod, and the threaded sleeve is threadedly installed on the upper outer side of the oil injection pipe.

[0014] Preferably, the pressure applying mechanism includes a handwheel screw threaded to the top of the bracket, a connecting plate rotatably connected to the lower end of the handwheel screw, a pressure ring disposed below the connecting plate, multiple sets of columns fixedly connected between the pressure ring and the connecting plate, a guide rod penetrating the bracket fixedly connected to the connecting plate, and a positioning frame supporting the inner seat and the outer ring seat disposed at the lower end of the bracket.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] This utility model mainly utilizes the cooperation between the inner seat, outer ring seat, inner display mechanism, and outer display mechanism. The inner display mechanism, which is set at equal angles on the inner seat, can detect and display the internal pressure when the expansion sleeve is locked. At the same time, multiple sets of outer display mechanisms on the outer ring seat can display the external support pressure generated when the expansion sleeve is locked. This facilitates the simultaneous detection of the internal tightening force and the external support force when the expansion sleeve is locked, thereby improving the efficiency of detecting the expansion sleeve tension force. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the pressure application mechanism of this utility model;

[0019] Figure 3 This is a schematic diagram of the internal display mechanism of this utility model;

[0020] Figure 4 This is a schematic diagram of the external display mechanism of this utility model.

[0021] In the diagram: 1. Bracket; 11. Positioning frame; 2. Pressing mechanism; 21. Connecting plate; 22. Column; 23. Pressure ring; 24. Handwheel screw; 25. Guide rod; 3. Inner seat; 31. Oil injection pipe; 32. Oil passage; 33. Hydraulic oil chamber; 35. Sealing hole; 36. First rubber plug; 4. Inner display mechanism; 41. First slider; 42. Inner top block; 43. Inner piston; 44. Transparent tube; 45. Clamping block; 46. Needle; 5. Outer ring seat; 51. Scale line; 52. Straight oil chamber; 53. Oil injection hole; 6. Outer display mechanism; 61. Outer top block; 62. Arc groove; 63. Second slider; 64. Outer piston; 65. Second rubber plug; 66. Pressure gauge; 67. Sealing plug; 7. Seal; 71. Screw sleeve; 72. Connecting rod; 73. Isolation plug. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-4 This utility model provides a technical solution: a device for detecting the tension force of a tension sleeve, comprising:

[0024] Support 1, and pressure applying mechanism 2 installed on the top of support 1 to apply pressure to the expansion sleeve;

[0025] The inner seat 3 and the outer ring seat 5 are installed at the bottom of the bracket 1. The inner seat 3 is located inside the outer ring seat 5, and the axis of the inner seat 3 and the axis of the outer ring seat 5 are both located on the same straight line.

[0026] Multiple sets of inner display mechanisms 4 are installed at equal angles on the inner seat 3, and multiple sets of outer display mechanisms 6 are installed at equal angles on the outer ring seat 5. The tension force during the tightening of the expansion sleeve is detected by the multiple sets of inner display mechanisms 4 and multiple sets of outer display mechanisms 6.

[0027] Each of the multiple internal display mechanisms 4 includes an inner top block 42 and a transparent tube 44. A first slider 41 is fixedly connected to one side of the inner top block 42. An inner piston 43 is provided at one end of the first slider 41, which is inserted into the inner seat 3. A needle 46 is provided at the end of the transparent tube 44. The open end of the transparent tube 44 is engaged with the needle 46. The transparent tube 44 is connected to the hydraulic oil chamber 33 through the needle 46, which passes through the first rubber plug 36. This facilitates the movement of the first slider 41 when the inner top block 42 is squeezed by the expansion sleeve. Under the action of the inner piston 43, the hydraulic oil in the hydraulic oil chamber 33 is pushed, so that the hydraulic oil enters the transparent tube 44 through the needle 46. The outside of the transparent tube 44 is provided with a scale to facilitate the change of the scale and to facilitate the detection of the tension force of the expansion sleeve at different positions.

[0028] An oil injection pipe 31 is provided in the middle of the upper surface of the inner seat 3. Multiple sets of hydraulic oil chambers 33 are provided on the outer side of the inner seat 3 for the sliding installation of the first slider 41. The multiple sets of hydraulic oil chambers 33 are connected to the oil injection pipe 31 through oil passages 32. The side view cross section of the hydraulic oil chambers 33 is U-shaped. A sealing hole 35 is provided on the upper surface of the inner seat 3 to communicate with the hydraulic oil chambers 33. A first rubber plug 36 is embedded in the sealing hole 35. A transparent tube 44 is connected to the hydraulic oil chamber 33 through the first rubber plug 36 via a needle 46. Two sets of locking blocks 45 are provided at the end of the transparent tube 44 to engage with the inner seat 3. The locking blocks 45 on the transparent tube 44 can fit into the groove (not shown in the figure) on the inner seat 3, thereby improving the installation stability of the transparent tube 44. At the same time, the hydraulic oil injected through the oil injection pipe 31 can be diverted to the multiple sets of hydraulic oil chambers 33 through the oil passages 32, thereby facilitating the driving of the inner top block 42 to abut against the inner wall of the expansion sleeve.

[0029] The inner side of the outer ring seat 5 is provided with multiple sets of straight oil chambers 52 for the installation of the external display mechanism 6. The upper surface of the outer ring seat 5 is provided with oil injection holes 53 that are connected to the multiple sets of straight oil chambers 52. The upper surface of the outer ring seat 5 is provided with scale lines 51.

[0030] The straight oil chamber 52 facilitates the quick installation of the external display mechanism 6. At the same time, the design of the oil injection hole 53 facilitates the injection of hydraulic oil into the straight oil chamber 52, thereby making it easy to detect changes in the tensioning force of the expansion sleeve by observing changes in the hydraulic oil.

[0031] The external display mechanism 6 includes a second slider 63 and a sealing plug 67 installed at both ends of the straight oil chamber 52. A pressure gauge 66 for detecting the pressure inside the straight oil chamber 52 is installed on the sealing plug 67. An outer top block 61 is fixedly connected to one end of the second slider 63. An arc-shaped groove 62 that abuts against the outside of the expansion sleeve is opened on one side of the outer top block 61. An outer piston 64 is provided at one end of the second slider 63 located inside the straight oil chamber 52. A second rubber plug 65 is embedded in the oil injection hole 53.

[0032] The sealing plug 67 can seal the outer port of the straight oil chamber 52, while the second slider 63 can be sealed by the outer piston 64 to ensure the sealing of the sliding within the straight oil chamber 52. This allows the pressure gauge 66 to display the change in tension force based on the movement distance of the second slider 63, thus improving the efficiency of the test. The first rubber plug 36, the second rubber plug 65, and the sealing plug 67 are all silicone plugs, which have good sealing performance, avoiding the leakage of hydraulic oil that would lead to inaccurate measurement results and improving practicality.

[0033] It also includes a sealing element 7 installed in the oil injection pipe 31. The sealing element 7 is mainly composed of a threaded sleeve 71, a connecting rod 72, and an isolation plug 73. The threaded sleeve 71 is fixed to the upper end of the connecting rod 72, and the isolation plug 73 is fixed to the lower end of the connecting rod 72. The threaded sleeve 71 is threaded on the upper outer side of the oil injection pipe 31. By rotating the threaded sleeve 71 on the oil injection pipe 31, the connecting rod 72 can drive the isolation plug 73 to separate multiple sets of oil passages 32, thereby facilitating the isolation of multiple sets of hydraulic oil chambers 33, avoiding interference between adjacent internal display mechanisms 4, and improving the accuracy of the test results.

[0034] The pressure mechanism 2 includes a handwheel screw 24 threaded to the top of the bracket 1. The lower end of the handwheel screw 24 is rotatably connected to a connecting plate 21. A pressure ring 23 is provided below the connecting plate 21. Multiple sets of columns 22 are fixedly connected between the pressure ring 23 and the connecting plate 21. A guide rod 25 penetrating the bracket 1 is fixedly connected to the connecting plate 21. A positioning frame 11 supporting the inner seat 3 and the outer ring seat 5 is provided at the lower end of the bracket 1. The height of the connecting plate can be easily adjusted by the handwheel screw 24, which facilitates the pressure ring 23 to press the expansion sleeve placed between the inner seat 3 and the outer ring seat 5. During the tightening process, the expansion sleeve applies pressure to multiple sets of inner display mechanisms 4 and multiple sets of outer display mechanisms 6, so that the inward and outward tension of the expansion sleeve can be detected simultaneously, improving the detection efficiency.

[0035] When in use, place the expansion sleeve on the positioning frame 11 and position it between the inner seat 3 and the outer ring seat 5. Open the seal 7 and inject hydraulic oil into the oil injection pipe 31. The hydraulic oil is injected into the multiple hydraulic oil chambers 33 through multiple sets of oil passages 32. The inner top block 42 of the multiple sets of inner display mechanisms 4 supports the expansion sleeve. Then, reset the seal 7 to isolate the multiple sets of oil passages 32.

[0036] Hydraulic oil is injected into the straight oil chamber 52 again through multiple sets of oil injection holes 53, thereby supporting the outer side of the expansion sleeve by the outer top block 61, and the second rubber plug 65 is inserted into the oil injection hole 53 for sealing, thus completing the adjustment of the outer display mechanism 6;

[0037] Rotating the handwheel screw 24 causes it to rotate and descend on the bracket 1, which in turn causes the connecting plate 21 to drive the pressure ring 23 to descend under the restriction of the guide rod 25. This causes the pressure block to press the expansion sleeve tightly, which in turn secures the expansion sleeve to the inner display mechanism 4 and supports the outer display mechanism 6. This facilitates the detection of the tension force of the expansion sleeve through the inner display mechanism 4 and the outer display mechanism 6, thereby improving the efficiency of the tension force detection.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for detecting the tension force of a tension sleeve, characterized in that, include: The bracket (1) and the pressure applying mechanism (2) installed on the top of the bracket (1) to pressurize the expansion sleeve; An inner seat (3) and an outer ring seat (5) are installed at the bottom of the bracket (1). The inner seat (3) is located inside the outer ring seat (5), and the axis of the inner seat (3) and the axis of the outer ring seat (5) are both located on the same straight line. Multiple sets of inner display mechanisms (4) are installed at equal angles on the inner seat (3), and multiple sets of outer display mechanisms (6) are installed at equal angles on the outer ring seat (5). The tension force during the tightening of the expansion sleeve is detected by the multiple sets of inner display mechanisms (4) and multiple sets of outer display mechanisms (6).

2. The tensioning force detection device for a sleeve according to claim 1, characterized in that: Each of the multiple sets of internal display mechanisms (4) includes an inner top block (42) and a transparent tube (44). A first slider (41) is fixedly connected to one side of the inner top block (42). An inner piston (43) is provided at one end of the first slider (41) inserted into the inner seat (3). A needle (46) is provided at the end of the transparent tube (44).

3. The tensioning force detection device for a sleeve according to claim 2, characterized in that: The inner seat (3) has an oil injection pipe (31) in the middle of its upper surface. The inner seat (3) has multiple sets of hydraulic oil chambers (33) for the sliding installation of the first slider (41) on its outer side. The multiple sets of hydraulic oil chambers (33) are connected to the oil injection pipe (31) through oil passages (32). The hydraulic oil chambers (33) have a U-shaped cross section in side view. The upper surface of the inner seat (3) has a sealing hole (35) that communicates with the hydraulic oil chambers (33). The sealing hole (35) is fitted with a first rubber plug (36). The transparent tube (44) is connected to the hydraulic oil chamber (33) through the first rubber plug (36) by a needle (46). The end of the transparent tube (44) is provided with two sets of locking blocks (45) that engage with the inner seat (3).

4. The tensioning force detection device for a sleeve according to claim 3, characterized in that: The inner side of the outer ring seat (5) is provided with multiple sets of straight oil chambers (52) for the installation of the external display mechanism (6). The upper surface of the outer ring seat (5) is provided with oil injection holes (53) that are connected to the multiple sets of straight oil chambers (52). The upper surface of the outer ring seat (5) is provided with scale lines (51).

5. The tensioning force detection device for a sleeve according to claim 4, characterized in that: The external display mechanism (6) includes a second slider (63) and a sealing plug (67) installed at both ends of the straight oil chamber (52). A pressure gauge (66) for detecting the pressure inside the straight oil chamber (52) is installed on the sealing plug (67). An outer top block (61) is fixedly connected to one end of the second slider (63). An arc-shaped groove (62) that abuts against the outside of the expansion sleeve is opened on one side of the outer top block (61). An outer piston (64) is provided at one end of the second slider (63) located inside the straight oil chamber (52). A second rubber plug (65) is embedded in the oil injection hole (53).

6. The tensioning force detection device for a sleeve according to claim 5, characterized in that: It also includes a seal (7) installed in the oil injection pipe (31). The seal (7) is mainly composed of a threaded sleeve (71), a connecting rod (72) and an isolation plug (73). The threaded sleeve (71) is fixed to the upper end of the connecting rod (72), and the isolation plug (73) is fixed to the lower end of the connecting rod (72). The threaded sleeve (71) is threaded on the upper outer side of the oil injection pipe (31).

7. The tensioning force detection device for a sleeve according to claim 6, characterized in that: The pressure applying mechanism (2) includes a handwheel screw (24) threaded to the top of the bracket (1), a connecting plate (21) rotatably connected to the lower end of the handwheel screw (24), a pressure ring (23) is provided below the connecting plate (21), multiple sets of columns (22) are fixedly connected between the pressure ring (23) and the connecting plate (21), a guide rod (25) penetrating the bracket (1) is fixedly connected to the connecting plate (21), and a positioning frame (11) supporting the inner seat (3) and the outer ring seat (5) is provided at the lower end of the bracket (1).

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