Field torque calibration device

Abstract

The utility model discloses an on-site torque calibration device which comprises a torque sensor, a calibration rod, a calibration rope, a weight and a calibration disc. One end of the torque sensor is fixed at the rear end of the test bed driving structure, the calibration rod and the calibration disc are respectively in threaded connection with the output end of the test bed driving structure, the calibration ropes are respectively and symmetrically fixed at the end parts of the calibration rod and the calibration disc, and the lower end of the calibration rope at one end is in bolted connection with the weight; the limiting structure comprises a limiting head, a limiting sleeve and a limiting column; the limiting heads are fixed to the upper end and the lower end of the calibration rope, the limiting sleeves are connected to the outer sides of the limiting heads in a sleeving mode, and the ends of the limiting columns extend out of the limiting heads and the limiting sleeves. The problems that when an existing automobile driving part calibration device conducts torque calibration on a series torque sensor, it is difficult to guarantee that a force arm of a driving part is horizontal, calibration accuracy is difficult to guarantee after the force arm deflects, and applicability is insufficient are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile component testing, in particular to an on-site torque calibration device. Background Art

[0002] Auto parts usually refer to the units and products that make up the various parts of a car. They serve the normal operation of the car. The drive part is a component of the auto parts. The drive part is often calibrated in series with a high-precision torque sensor during use.

[0003] However, it still has the following disadvantages in actual use:

[0004] The existing automobile driving part calibration device has insufficient applicability because it is difficult to ensure the levelness of the driving part force arm during torque calibration with a series torque sensor, and it is difficult to ensure the accuracy of the calibration after the force arm is deflected. Utility Model Content

[0005] The purpose of the utility model is to provide an on-site torque calibration device to solve the problem raised in the above-mentioned background technology that the existing automobile drive part calibration device is difficult to ensure the horizontality of the drive part force arm during torque calibration with a series torque sensor, and it is difficult to ensure the accuracy of the calibration after the force arm is deflected, resulting in insufficient applicability.

[0006] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0007] The utility model is an on-site torque calibration device, comprising:

[0008] Torque sensor, calibration rod, calibration rope, weights, calibration disc;

[0009] One end of the torque sensor is fixed to the rear end of the test bench drive structure, and the calibration rod and the calibration disc are respectively threadedly connected to the output end of the test bench drive structure, the calibration rope is symmetrically fixed to the ends of the calibration rod and the calibration disc, and a weight is bolted to the lower end of one end of the calibration rope.

[0010] Furthermore, a fixing rod is fixed to the middle of the other end of the torque sensor, and the fixing rod is set to be in a T shape, and the upper end of the fixing rod is threadedly connected to the outer surface of the test bench driving structure through a screw.

[0011] Furthermore, an arc surface is provided at the end of the calibration rod, and a first rope threading hole is penetrated through the upper end of the calibration rod, and a first weight-reducing hole is penetrated through the front end of the calibration rod at equal distances.

[0012] Furthermore, a first positioning hole is formed through the middle of the front side of the calibration rod, and long slot holes are formed through the outer edge of the first positioning hole at equal distances.

[0013] Further, a groove is provided in the middle of the outer surface of the calibration disc, and a second rope threading hole is provided through the upper end of the groove, a second weight reduction hole is provided through the outer edge of the front face of the calibration disc at equal distances, and a second positioning hole is provided through the middle of the front face of the calibration disc, and light holes are provided through the outer edge of the second positioning hole at equal distances;

[0014] The long slot hole and the smooth hole have internal threads with a first screw.

[0015] Furthermore, it also includes a limiting structure, which includes a limiting head, a limiting sleeve, and a limiting column;

[0016] The limit head is fixed to the upper and lower ends of the calibration rope, and the limit sleeve is sleeved on the outer side of the limit head, and the end of the limit column extends out of the limit head and the limit sleeve.

[0017] Furthermore, it also includes a balancing structure, which includes a guide groove, a U-shaped balancing block, and a second screw;

[0018] The guide groove is symmetrically arranged at the upper end of the calibration rod, and the U-shaped balancing block slides in the guide groove, and the second screw thread penetrates through the middle of the rear end of the U-shaped balancing block.

[0019] Compared with the prior art, the advantages of the present invention are:

[0020] The utility model adopts a calibration method of a calibration rod and a calibration disc. During the torque calibration process, a calibration rope is fixed to the end of the calibration rod and the calibration disc. The calibration rope is tangent to the end of the calibration rod and the calibration disc, which can ensure that the actual effective arm length is constant, which helps to improve the calibration accuracy. A weight is bolted to the lower end of the calibration rope on one side or the lower end of the calibration rope on the other side, so that clockwise and counterclockwise torque calibration can be performed, thereby improving applicability.

[0021] Based on the above beneficial effects, the limit heads are fixed on the upper and lower ends of the calibration rope and used in conjunction with the limit sleeve and the limit column. The upper end of the calibration rope can be quickly fixed to the calibration rod and the calibration disc, and multiple calibration rods and calibration discs that are not in use can be limited after being centrally stored, which is convenient for use and meets different needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 It is a calibration diagram of the calibration rod of the utility model;

[0024] Figure 2 It is a calibration diagram of the calibration disc of the utility model;

[0025] Figure 3 It is a schematic diagram of the calibration disc of the utility model;

[0026] Figure 4 It is a schematic diagram of a calibration rod of the utility model;

[0027] Figure 5 This is a schematic diagram of the installation of the limiting structure of the utility model.

[0028] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0029] 2. Torque sensor; 3. Fixing rod; 4. Screw; 5. Calibration rod; 51. Arc surface; 52. First rope threading hole; 53. First weight reduction hole; 54. First positioning hole; 55. Long slot hole; 56. Guide groove; 57. U-shaped balance block; 58. Second screw; 6. Calibration rope; 61. Limit head; 62. Limit sleeve; 63. Limit column; 7. First screw; 8. Weight; 9. Calibration disk; 91. Groove; 92. Second rope threading hole; 93. Second positioning hole; 94. Light hole; 95. Second weight reduction hole. DETAILED DESCRIPTION

[0030] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0031] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific implementation methods disclosed below.

[0032] In order to make the purpose, technical solution and advantages of the present invention more clear, the implementation mode of the present invention will be further described in detail below with reference to the accompanying drawings.

[0033] See also Figure 1-5 As shown, this embodiment is an on-site torque calibration device, comprising:

[0034] Torque sensor 2, calibration rod 5, calibration rope 6, weight 8, calibration disc 9;

[0035] One end of the torque sensor 2 is fixed to the rear end of the test bench driving structure, and the calibration rod 5 and the calibration disc 9 are respectively threadedly connected to the output end of the test bench driving structure, and the calibration rope 6 is symmetrically fixed to the ends of the calibration rod 5 and the calibration disc 9, and a weight 8 is bolted to the lower end of one end of the calibration rope 6;

[0036] The torque sensor 2 is used for torque detection, the calibration rod 5 and the calibration disc 9 are used for torque calibration, and the calibration rope 6 is used for fixing the weight 8. The two can be used together to calibrate the clockwise and counterclockwise torque of the vehicle drive part;

[0037] A fixing rod 3 is fixed to the middle of the other end of the torque sensor 2, and the fixing rod 3 is set in a T shape, and the upper end of the fixing rod 3 is threadedly connected to the outer surface of the test bench driving structure through a screw 4;

[0038] The fixing rod 3 is used together with the screw 4 to fix the other end of the torque sensor 2. The threaded connection facilitates the disassembly and assembly of the structure.

[0039] The end of the calibration rod 5 is provided with an arc surface 51, and the upper end of the calibration rod 5 is penetrated with a first rope threading hole 52, and the front end of the calibration rod 5 is penetrated with a first weight-reducing hole 53 at an equal distance;

[0040] The arc surface 51 ensures that the end of the calibration rope 6 is tangent to the calibration rod 5, which helps to ensure the constant arm length. The first rope threading hole 52 is used to thread the calibration rope 6 upward and fix it, and the first weight-reducing hole 53 is used to reduce the weight of the calibration rod 5.

[0041] A first positioning hole 54 is formed through the middle of the front side of the calibration rod 5, and long slot holes 55 are formed through the outer edge of the first positioning hole 54 at equal distances.

[0042] The first positioning hole 54 is used to locate the center of the installation position, and the long slot hole 55 is used to install screws to adjust the installation angle of the fixing rod 3;

[0043] It also includes a balancing structure, which includes a guide groove 56, a U-shaped balancing block 57, and a second screw 58;

[0044] The guide groove 56 is symmetrically opened at the upper end of the calibration rod 5, and the U-shaped balance block 57 slides in the guide groove 56, and the second screw 58 is threadedly penetrated through the middle of the rear end of the U-shaped balance block 57;

[0045] The guide groove 56 provides structural guidance for the U-shaped balancing block 57, which can satisfy the movement of the U-shaped balancing block 57, and the second screw 58 is used to define the structure after the movement. The U-shaped balancing block 57 is used to balance and calibrate the calibration rod 5.

[0046] A groove 91 is provided in the middle of the outer surface of the calibration disc 9, and a second rope threading hole 92 is provided through the upper end of the groove 91, and second weight reduction holes 95 are provided through the outer edge of the front face of the calibration disc 9 at equal distances, and a second positioning hole 93 is provided through the middle of the front face of the calibration disc 9, and light holes 94 are provided through the outer edge of the second positioning hole 93 at equal distances;

[0047] The groove 91 can be used to wrap and store the calibration rope 6, the second rope threading hole 92 can be used to pass the calibration rope 6 through the upper part and fix it, the second weight-reducing hole 95 can reduce the weight of the calibration disc 9, the second positioning hole 93 can be used to install the calibration disc 9 and the light hole 94 can be used with the screw 4 to fix the calibration disc 9;

[0048] The long slot hole 55 and the light hole 94 have internal threads with a first screw 7;

[0049] The first screw 7 is used to install and fix the calibration rod 5 and the calibration disc 9 structure;

[0050] Working principle: The driving part of the vehicle is adjusted to a horizontal state in advance, and the torque sensor 2 is cleared when the output end is suspended. When the driving structure does not have self-locking or angle control, the torque sensor 2 can be fixed by fixing the fixing rod 3 with screws 4;

[0051] Next, the calibration rod 5 and the calibration disc 9 are selected according to the use requirements, and the upper part of the calibration rope 6 is passed through the first rope threading hole 52 or the second rope threading hole 92 at the end of the selected calibration rod 5 and the calibration disc 9, and then the upper part is fixed by the following limiting structure;

[0052] At this time, the calibration rod 5 or the calibration disc 9 is fixed to the output end of the driving structure by using the first positioning hole 54 or the second positioning hole 93, and the weight 8 is bolted to the lower end of the calibration rope 6 on one side or the other side, and the torque sensor 2 is used to perform clockwise and counterclockwise torque detection calibration on the driving structure;

[0053] This solution can ensure that the actual effective arm length is constant, which helps to improve calibration accuracy, and can perform clockwise and counterclockwise torque calibration to improve applicability.

[0054] See also Figure 1-5 As shown, this embodiment is based on the above embodiment 1 and further includes a limiting structure, and the limiting structure includes a limiting head 61, a limiting sleeve 62, and a limiting column 63;

[0055] The limiting head 61 is fixed to the upper and lower ends of the calibration rope 6, and the limiting sleeve 62 is sleeved on the outer side of the limiting head 61, and the end of the limiting column 63 extends out of the limiting head 61 and the limiting sleeve 62;

[0056] The limit head 61 wraps the upper and lower ends of the calibration rope 6, and can be used in conjunction with the limit sleeve 62 and the limit column 63 to fix the upper part of the calibration rope 6, and to limit the ends of the multiple calibration rods 5 and the calibration disc 9 stored in the middle of the calibration rope 6, so as to prevent the calibration rods 5 and the calibration disc 9 from falling off during lifting and storage;

[0057] Working principle: When the upper part of the calibration rope 6 is fixed to the calibration rod 5 and the calibration disc 9, the limiting sleeve 62 is directly sleeved on the outer side of the upper limiting head 61, and the limiting column 63 is damped and passed through one end of the limiting head 61 and the limiting sleeve 62;

[0058] When the calibration rod 5 and the calibration disc 9 are stored, lifted and transported, the limiting sleeve 62 can be sleeved on the outer side of the limiting head 61 at the end of the calibration rope 6, and the above steps can be repeated;

[0059] This solution can meet different usage requirements and improve the applicability and functionality of the structure.

[0060] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0061] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An on-site torque calibration device, characterized in that: include: Torque sensor (2), calibration rod (5), calibration rope (6), weight (8), calibration disc (9); One end of the torque sensor (2) is fixed to the rear end of the test bench drive structure, and the calibration rod (5) and the calibration disc (9) are respectively threadedly connected to the output end of the test bench drive structure, the calibration rope (6) is symmetrically fixed to the ends of the calibration rod (5) and the calibration disc (9), and a weight (8) is bolted to the lower end of one end of the calibration rope (6).

2. The on-site torque calibration device according to claim 1, characterized in that: A fixing rod (3) is fixed to the middle of the other end of the torque sensor (2), and the fixing rod (3) is set in a T shape. The upper end of the fixing rod (3) is threadedly connected to the outer surface of the test bench drive structure through a screw (4).

3. The on-site torque calibration device according to claim 1, characterized in that: The end of the calibration rod (5) is provided with an arc surface (51), the upper end of the calibration rod (5) is penetrated by a first rope threading hole (52), and the front end of the calibration rod (5) is penetrated by first weight-reducing holes (53) at equal distances.

4. The on-site torque calibration device according to claim 1, characterized in that: A first positioning hole (54) is formed through the middle of the front side of the calibration rod (5), and long slot holes (55) are formed through the outer edge of the first positioning hole (54) at equal distances.

5. The on-site torque calibration device according to claim 4, characterized in that: A groove (91) is provided in the middle of the outer surface of the calibration disc (9), and a second rope threading hole (92) is provided through the upper end of the groove (91); second weight reduction holes (95) are provided through the outer edge of the front face of the calibration disc (9) at equal distances; a second positioning hole (93) is provided through the middle of the front face of the calibration disc (9), and light holes (94) are provided through the outer edge of the second positioning hole (93) at equal distances; The long slotted hole (55) and the light hole (94) have internal threads with a first screw (7).

6. The on-site torque calibration device according to claim 1, characterized in that: It also includes a limiting structure, which includes a limiting head (61), a limiting sleeve (62), and a limiting column (63); The limiting head (61) is fixed to the upper and lower ends of the calibration rope (6), and the limiting sleeve (62) is sleeved on the outside of the limiting head (61), and the end of the limiting column (63) extends out of the limiting head (61) and the limiting sleeve (62).

7. The on-site torque calibration device according to claim 1, characterized in that: It also includes a balancing structure, the balancing structure including a guide groove (56), a U-shaped balancing block (57), and a second screw (58); The guide groove (56) is symmetrically arranged at the upper end of the calibration rod (5), and the U-shaped balancing block (57) slides in the guide groove (56), and the second screw (58) is threadedly penetrated through the middle of the rear end of the U-shaped balancing block (57).

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