Tire resistance value detection instrument

Abstract

The utility model discloses a tire resistance value detection instrument, relates to tire resistance value detection technical field, the instrument includes electrometer, steel nail, support body, also include adjusting subassembly and fixing subassembly, the side wall of electrometer is fixed with two detection line, one detection line is connected with the positive pole of electrometer, and the other detection line is connected with the negative pole of electrometer. One of the two detection lines is connected with a negative electrode of the electrometer, the other detection line is connected with a negative electrode of the electrometer, the ends, away from the electrometer, of the two detection lines are fixedly connected with electrode clamps, the supporting body is placed on the surface of a tire, the steel nail is nailed into part of the section of the tire, and a sliding groove is formed in the side wall of the supporting body. According to the utility model, the steel pin and the electrometer are used, and according to different use sequences, the current conduction path of the internal cross section of the tire is detected to the greatest extent, and data support is provided for reducing the resistance of the tire.

Description

Technical Field

[0001] The utility model relates to the technical field of tire resistance value detection, in particular to a tire resistance value detection instrument. Background Technique

[0002] There are two existing methods for detecting the resistance value of tires. One is that the equipment directly measures and gives the resistance data of inflated tires and solid tires. However, for the conduction path of automotive static electricity in tire components, this method cannot give clear information proof, and for the resistance value of the tire cross-section rubber compound, it cannot directly give clear data either.

[0003] Another method is to stipulate the detection method for measuring the resistance value of antistatic and conductive products made of rubber in part or in whole. However, due to the limitations of the detection equipment, it can only measure the resistance value between specified points, which is not suitable for the detection of tire resistance, and cannot determine the conduction path of static electricity inside the tire, nor can it give the resistance data size of semi-finished components.

[0004] Based on this, a tire resistance value detection instrument is now provided, which can eliminate the drawbacks of existing devices. Content of the Utility Model

[0005] The purpose of the utility model is to provide a tire resistance value detection instrument to solve the problems that the existing tire resistance value detection instrument cannot detect the resistance value of semi-finished components, nor can it confirm the conduction path sequence and conduction path of automotive static electricity through the tire to the ground.

[0006] To achieve the above purpose, the utility model provides the following technical solutions:

[0007] A tire resistance value detection instrument includes an electrometer, steel nails, a support body, and also includes an adjustment component and a fixing component. Two detection lines are fixedly arranged on the side wall of the electrometer. One of the detection lines is connected to the positive pole of the electrometer, and the other detection line is connected to the negative pole of the electrometer. The ends of the two detection lines far away from the electrometer are fixedly connected with electrode clips. The support body is placed on the tire surface, the steel nails are driven into a part of the tire cross-section, a sliding groove is opened on the side wall of the support body, and the steel nails are slidably connected with the inner side wall of the sliding groove of the support body. The adjustment component includes a fixed cylinder, a telescopic cylinder, and a turntable. Four legs are fixedly connected to the side wall of the fixed cylinder. The telescopic cylinder is slidably connected to the inner side wall of the fixed cylinder. The top wall of the telescopic cylinder is rotatably connected with the turntable through a bearing. The fixing component is arranged in the turntable and is used for fixing the electrometer.

[0008] On the basis of the above technical solutions, the utility model also provides the following optional technical solutions:

[0009] In an alternative embodiment: The side wall of the fixed cylinder is provided with threads, and the fixed cylinder is threadedly connected to a threaded sleeve, and there is a pre-tightening force between the threaded sleeve and the telescopic cylinder.

[0010] In an alternative embodiment: A motor slot is formed in the top wall of the telescopic cylinder, a motor is fixedly connected to the inner side wall of the motor slot, and the output end of the motor is fixedly connected to the turntable.

[0011] In an alternative embodiment: The fixing assembly includes a plug and a clamping block. Two plugs are fixedly connected to the lower surface of the electrometer. Two plug slots corresponding to the plugs are formed in the top wall of the turntable. Clamping block slots are formed in the inner side walls of the two plug slots. A clamping block is slidably connected to the inner side wall of the clamping block slot. A damping spring is fixedly connected between the clamping block and the inner side wall of the clamping block slot. Grooves corresponding to the clamping blocks are formed in the side walls of the two plugs, and the clamping blocks are clamped with the grooves.

[0012] In an alternative embodiment: The side wall of the clamping block is provided with a chamfer.

[0013] In an alternative embodiment: Two limiting block slots are formed in the side wall of the turntable. Limiting blocks are slidably connected to the inner side walls of the two limiting block slots. A pull rope is fixedly connected to the side wall of the limiting block located in the limiting block slot. The end of the pull rope away from the limiting block penetrates and extends into the clamping block slot and is fixedly connected to the side wall of the clamping block.

[0014] In an alternative embodiment: The limiting block is a cuboid.

[0015] In an alternative embodiment: A pull ring is fixedly connected to the side wall of the limiting block located outside the limiting block slot.

[0016] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0017] The present utility model facilitates the study of the resistance value of semi-finished components, determines the resistance value of the finished tire rubber components, confirms the sequence of the path for automotive static electricity to be conducted to the ground through the tire, determines the conduction path of static electricity in the tire, helps tire designers optimize tire design, and provides technical support for tire resistance conduction.

[0018] The present utility model can determine the resistance data of each component of the finished tire vulcanized rubber, and can obtain the resistance data of each component of the finished tire vulcanized rubber without repeated rubber verification experiments and complex calculations.

[0019] The present utility model can be used to detect the resistance value of tires returned to the market, and has the advantages of convenient experimental operation, high repeatability, and good experimental consistency, and the operation is more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic structural diagram of the present utility model.

[0021] Figure 2 This is the first perspective view of the explosion structure of the present utility model.

[0022] Figure 3 This is the second perspective view of the explosion structure of the present utility model.

[0023] Figure 4 This is the schematic diagram of the electrometer structure of the present utility model.

[0024] Figure 5 This is the schematic diagram of the turntable structure of the present utility model.

[0025] Figure 6 This is the schematic diagram of the internal structure of the turntable of the present utility model.

[0026] Figure 7 This is the schematic diagram of the support structure of the present utility model.

[0027] Annotation of reference numerals: 1 fixed cylinder, 2 telescopic cylinder, 3 electrometer, 4 leg, 5 detection line, 6 turntable, 7 motor, 8 threaded sleeve, 9 steel nail, 10 support body, 11 insertion block, 12 clamping block, 13 pulling rope, 14 limiting block. Detailed implementation manners

[0028] In order to make the purpose, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0029] In one embodiment, as Figures 1 - 7 shown, a tire resistance value detection instrument includes an electrometer 3, a steel nail 9, a support body 10, and further includes an adjustment assembly and a fixing assembly. Two detection lines 5 are fixedly arranged on the side wall of the electrometer 3. One of the detection lines 5 is connected to the positive electrode of the electrometer 3, and the other detection line 5 is connected to the negative electrode of the electrometer 3. Electrodes clips are fixedly connected to the ends of the two detection lines 5 far away from the electrometer 3. The support body 10 is placed on the tire surface, the steel nail 9 is nailed into a part of the tire cross-section, a chute is provided on the side wall of the support body 10, and the steel nail 9 is slidably connected to the inner side wall of the chute of the support body 10. The adjustment assembly includes a fixed cylinder 1, a telescopic cylinder 2, and a turntable 6. Four legs 4 are fixedly connected to the side wall of the fixed cylinder 1. The telescopic cylinder 2 is slidably connected to the inner side wall of the fixed cylinder 1. The top wall of the telescopic cylinder 2 is rotatably connected to the turntable 6 through a bearing. The fixing assembly is arranged in the turntable 6 and is used to fix the electrometer 3. Take a part of the cross-section of a finished tire. It is recommended to take a tire cross-section with a width of 30 - 40 mm at the crown part of the tire and also a width of 30 - 40 mm at the sidewall part to ensure that the widths of the crown and sidewall of the tire cross-section are the same.

[0030] Select a 25 mm steel nail 9 and insert it into the rubber material inside the tire cross section according to the preset order. The steel nail 9 is inserted into the wheel cross section to a depth of 5 mm. To ensure consistent insertion depth, it is recommended to use a support body 10 with a height of 20 mm. Place the steel nail 9 in the center position. After forcibly inserting the steel nail 9 into the cross-section rubber material component, remove the support body 10 to complete the insertion of the steel nail 9.

[0031] Insert the steel nail 9 into the tire cross section to a depth of 5 mm according to the preset sequence. Ensure that the insertion depth is consistent.

[0032] Start the electrometer 3 and perform a resistance test.

[0033] Due to different rubber compound formulas, the resistivity of the rubber compound is also different. It is necessary to conduct one-on-one tests on different tires to test the direction of the tire resistance path, etc.

[0034] Data processing: Based on the different resistance data of the electrometer, the current transmission path of static electricity inside the tire is summarized;

[0035] Use a partial tire section, of any size, instead of the entire tire for testing;

[0036] Select 10cm steel nails 9, and the steel nails 9 are inserted into the wheel section to a depth of 3cm. Under the premise of ensuring the consistency of the insertion depth, the steel nails 9 are inserted in order for protection. The depth is not limited to 3cm, and the depth is 0-10CM.

[0037] In one embodiment, Figure 1 As shown, the side wall of the fixed cylinder 1 is provided with a thread, the fixed cylinder 1 is threadedly connected to the threaded sleeve 8, and there is a pre-tightening force between the threaded sleeve 8 and the telescopic cylinder 2.

[0038] In one embodiment, Figure 2 and Figure 3 As shown, the top wall of the telescopic cylinder 2 is provided with a motor slot, the inner side wall of which is fixedly connected to a motor 7, and the output end of the motor 7 is fixedly connected to the turntable 6. By starting the motor 7, the motor 7 drives the turntable 6 to rotate, and the turntable 6 drives the electrometer 3 to rotate, so that the operator does not need to walk back and forth to observe the data, which is more convenient.

[0039] In one embodiment, Figure 4 and Figure 6 As shown, the fixed assembly includes an insert block 11 and a clamping block 12. Two insert blocks 11 are fixedly connected to the lower surface of the electrometer 3. The top wall of the turntable 6 is provided with two insert block grooves corresponding to the insert blocks 11. The inner side walls of the two insert block grooves are provided with clamping block grooves. The inner side walls of the clamping block grooves are slidably connected with the clamping block 12. A damping spring is fixedly connected between the clamping block 12 and the inner side wall of the clamping block groove. The side walls of the two insert blocks 11 are provided with grooves corresponding to the clamping block 12, and the clamping block 12 is clamped in the grooves.

[0040] In one embodiment, as Figure 6 shown, a chamfer is provided on the side wall of the clamping block 12, making the clamping connection between the clamping block 12 and the groove smoother.

[0041] In one embodiment, as Figure 4 and Figure 6 shown, two limiting block grooves are provided on the side wall of the turntable 6, and limiting blocks 14 are slidably connected to the inner side walls of the two limiting block grooves. A pulling rope 13 is fixedly connected to the side wall of the limiting block 14 located in the limiting block groove. One end of the pulling rope 13 away from the limiting block 14 penetrates and extends into the clamping block groove and is fixedly connected to the side wall of the clamping block 12. When it is necessary to disassemble the electrometer 3, only need to pull the limiting block 14 through the pull ring and rotate it by ninety degrees. At this time, the limiting block 14 is stuck outside the clamping block groove. The limiting block 14 pulls the pulling rope 13, and the pulling rope 13 pulls the clamping block 12 into the clamping block groove, releasing the clamping connection with the groove of the plug block 11, and then the electrometer 3 can be removed. The disassembly operation is quick and convenient.

[0042] In one embodiment, as Figure 5 and Figure 6 shown, the limiting block 14 is a cuboid. The limiting block 14 can be stuck outside the limiting block groove after rotating by ninety degrees.

[0043] In one embodiment, as Figure 5 and Figure 6 shown, a pull ring is fixedly connected to the side wall of the limiting block 14 located outside the limiting block groove, facilitating the pulling of the limiting block 14.

[0044] The above embodiment discloses a tire resistance value detection instrument, and the tools for resistance detection are: an electrometer 3 and a steel nail 9;

[0045] Obtain a partial tire cross-section of the finished tire, clean the impurities on the surface of the tire cross-section, avoid the positions of the glue joints and wear marks.

[0046] Insert the steel nail 9 into the semi-finished part in a preset order;

[0047] Use the electrode clip of the electrometer 3 to clamp the exposed part of the steel nail 9, and start the equipment to carry out the resistance data measurement work.

[0048] Insert the steel nail 9 into the tire cross-section in sequence, and repeat the above operation.

[0049] As is well known, the conduction of static electricity is all carried out along the path with the smallest resistance value on the conduction path. The smaller the resistance value of the conduction path, the smoother the conduction of static electricity. The current test and detection methods at the present stage cannot determine the conduction path of the current in each rubber component of the tire. The core method lies in using a resistance meter installed on the tire cross-section and installing a pin in a special way to detect the tire resistance data;

[0050] Take a partial cross-section of the finished tire. It is recommended to use a tire cross-section with a width of 30 - 40 mm at the crown part of the tire and also a width of 30 - 40 mm at the sidewall part to ensure that the widths of the crown and sidewall of the tire cross-section are the same.

[0051] Select a steel nail 9 with a length of 25 mm and insert it into the internal rubber compound of the tire cross-section in a preset order. The depth of the steel nail 9 inserted into the wheel cross-section is 5 mm. To ensure consistent insertion depth, it is recommended to use a support 10 with a height of 20 mm. Place the steel nail 9 at the center position. After fully inserting the steel nail 9 into the cross-section rubber compound component by applying force, remove the support 10 to complete the insertion of the steel nail 9.

[0052] Insert into the internal rubber compound of the tire cross-section in a preset order. The depth of the steel nail 9 inserted into the wheel cross-section is 5 mm to ensure consistent insertion depth.

[0053] Start the electrometer 3 to conduct a resistance test.

[0054] Due to different rubber compound formulations, the resistivity of the rubber compound is also different. It is necessary to conduct one-to-one tests according to different tires to test the direction of the tire resistance path, etc.

[0055] For data processing work, summarize the current transfer path of static electricity inside the tire based on the different resistance data sizes of the electrometer.

[0056] Use a partial cross-section of the tire, with no size limit, and do not use the whole tire for testing.

[0057] Select a steel nail 9 with a length of 10 cm. The depth of the steel nail 9 inserted into the wheel cross-section is 3 cm. On the premise of ensuring consistent insertion depth, protect the insertion order of the steel nail 9. The depth is not limited to 3 cm, and the depth is 0 - 10 cm.

[0058] Insert the two plugs 11 of the electrometer 3 into the two plug slots of the turntable 6. At this time, the locking block 12 cooperates with the damping spring, so that the locking block 12 is engaged with the groove of the plug 11 to complete the fixation of the electrometer 3.

[0059] Reduce the pre-tightening force between the threaded sleeve 8 and the fixed cylinder 1 by rotating the threaded sleeve 8, pull out the telescopic cylinder 2, adjust the height of the electrometer 3 to adapt to the height of different users, eliminating the need for people to bend down to observe data, making it more convenient to use, and it can be telescopically retracted for easy carrying.

[0060] By starting the motor 7, the motor 7 drives the turntable 6 to rotate, and the turntable 6 drives the electrometer 3 to rotate, eliminating the need for people to walk back and forth to observe data, making it more convenient.

[0061] When the electrometer 3 needs to be disassembled, just pull the limit block 14 through the pull ring and rotate it by ninety degrees. At this time, the limit block 14 is stuck outside the block groove, and the limit block 14 pulls the pull rope 13. The pull rope 13 pulls the block 12 into the block groove, releasing the groove connection with the insertion block 11, and then the electrometer 3 can be removed. The disassembly operation is quick and convenient.

[0062] The above is only the specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art within the technical scope disclosed in the present application can easily think of changes or substitutions, which should all be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A tire resistance value detection instrument, comprising an electrometer (3), a steel nail (9), and a support body (10), characterized in that, It also includes an adjustment component and a fixing component. Two detection lines (5) are fixedly arranged on the side wall of the electrometer (3). One of the detection lines (5) is connected to the positive electrode of the electrometer (3), and the other detection line (5) is connected to the negative electrode of the electrometer (3). Electrodes clips are fixedly connected to the ends of the two detection lines (5) far away from the electrometer (3). The support body (10) is placed on the tire surface, and the steel nail (9) is driven into a partial cross-section of the tire. A chute is provided on the side wall of the support body (10), and the steel nail (9) is slidably connected to the inner side wall of the chute of the support body (10). The adjustment component includes a fixed cylinder (1), a telescopic cylinder (2), and a turntable (6). Four legs (4) are fixedly connected to the side wall of the fixed cylinder (1). The telescopic cylinder (2) is slidably connected to the inner side wall of the fixed cylinder (1). The top wall of the telescopic cylinder (2) is rotatably connected to the turntable (6) through a bearing. The fixing component is arranged in the turntable (6) and is used to fix the electrometer (3).

2. The tire resistance value detection instrument according to claim 1, wherein, Threads are provided on the side wall of the fixed cylinder (1), and the fixed cylinder (1) is threadedly connected to a threaded sleeve (8). A pre-tightening force exists between the threaded sleeve (8) and the telescopic cylinder (2).

3. The tire resistance value detection instrument according to claim 2, characterized in that, A motor groove is provided on the top wall of the telescopic cylinder (2), and a motor (7) is fixedly connected to the inner side wall of the motor groove. The output end of the motor (7) is fixedly connected to the turntable (6).

4. A tire resistance value detection instrument according to claim 3, characterized in that, The fixing component includes an insertion block (11) and a clamping block (12). Two insertion blocks (11) are fixedly connected to the lower surface of the electrometer (3). Two insertion block grooves corresponding to the insertion blocks (11) are provided on the top wall of the turntable (6). Clamping block grooves are provided on the inner side walls of the two insertion block grooves. A clamping block (12) is slidably connected to the inner side wall of the clamping block groove. A damping spring is fixedly connected between the clamping block (12) and the inner side wall of the clamping block groove. Grooves corresponding to the clamping block (12) are provided on the side walls of the two insertion blocks (11), and the clamping block (12) is clamped with the groove.

5. The tire resistance value detection instrument according to claim 4, characterized in that, A chamfer is provided on the side wall of the clamping block (12).

6. A tire resistance value detection instrument according to claim 5, characterized in that, Two limit block grooves are provided on the side wall of the turntable (6). Limit blocks (14) are slidably connected to the inner side walls of the two limit block grooves. A pull rope (13) is fixedly connected to the side wall of the limit block (14) located in the limit block groove. The end of the pull rope (13) far away from the limit block (14) penetrates and extends into the clamping block groove and is fixedly connected to the side wall of the clamping block (12).

7. A tire resistance value detection instrument according to claim 6, characterized in that, The limit block (14) is a cuboid.

8. A tire resistance value detection instrument according to claim 6, characterized in that, A pull ring is fixedly connected to the side wall of the limit block (14) located outside the limit block groove.

Images