Shunting type torque testing machine gearbox

Abstract

The utility model relates to the technical field of torque testing, in particular to a shunting type torque testing machine gearbox, which comprises a box body and a box cover, an input shaft, two transmission shafts and an output shaft are rotatably arranged in the box body at intervals, a primary driving gear is fixedly sleeved on the input shaft, and secondary driving gears and primary driven gears are sleeved on the two transmission shafts at intervals. The output shaft is fixedly sleeved with a second-stage driven gear, the first-stage driving gear is meshed with the two first-stage driven gears at the same time, and the two second-stage driving gears are meshed with the second-stage driven gear at the same time. The first-level driving gear distributes input torque to the two first-level driven gears, the two second-level driving gears distribute driving torque to the second-level driven gears in a combined mode, load distribution is ingeniously achieved, the load borne by a single gear is reduced, abrasion is reduced, the service life of equipment is prolonged, the structure is simple, and the manufacturing cost is low.

Description

Technical Field

[0001] The utility model relates to the technical field of torque testers, in particular to a split-flow torque tester gear box. Background Art

[0002] The torque test system is a precision instrument used to detect and calibrate various instruments. It mainly includes a host, a drive transmission device, a measurement and control system, and a computer. During the test, the computer sends instructions to the control unit, so that the servo motor synchronously drives the reducer to drive the chuck to rotate. When the chuck rotates, torque is applied to the sample. This torque is reacted to the torque sensor on the chuck through the sample, and then input into the computer to obtain the measured torque.

[0003] In the whole process, the reducer, that is, the reduction gearbox, is conventionally designed with single-stage transmission, that is, the gears are meshed in sequence. This transmission method makes a single gear bear a large load, especially when the reducer has a small gear input and a large gear input. The load is concentrated at the meshing point of the large and small gears, which can easily cause gear wear and reduce the service life of the equipment.

[0004] To this end, the utility model provides a split-flow torque testing machine gear box, which splits the gear load and reduces wear. Utility Model Content

[0005] The utility model aims to solve the problems existing in the prior art and proposes a split-flow torque testing machine gearbox.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A split-flow torque tester gearbox comprises a box body and a box cover, wherein the box body and the box cover are connected via fasteners, wherein an input shaft, two transmission shafts and an output shaft are rotatably installed at intervals in the box body, a primary driving gear is sleeved on the input shaft, a secondary driving gear and a primary passive gear are sleeved on the two transmission shafts, a secondary passive gear is sleeved on the output shaft, the primary driving gear is meshed with two primary passive gears at the same time, and the two secondary driving gears are meshed with the secondary passive gear at the same time.

[0008] Preferably, an inner stop is provided on the end surface of the box body, and the box cover is embedded in the inner stop.

[0009] Preferably, the input shaft and the primary driving gear, the transmission shaft and the primary passive gear and the secondary driving gear, and the output shaft and the secondary passive gear are all integrally formed.

[0010] Preferably, the output shaft is integrally formed with a center hole.

[0011] Preferably, the output shaft is rotatably mounted in the housing using a sliding bearing.

[0012] Preferably, the central hole is an inner square.

[0013] Compared with the prior art, the utility model provides a split-flow torque tester gearbox, which has the following beneficial effects:

[0014] The first-stage driving gear divides the input torque to the two first-stage passive gears, and the two second-stage driving gears combine the driving torque and transmit it to the second-stage passive gear, which cleverly realizes the load diversion. Compared with the single gear meshing, the double-path gear meshing evenly divides the two-path driving torque, thereby reducing the load borne by the single gear. The double power diversion not only reduces wear and improves the service life of the equipment, but also has a simple structure and low manufacturing cost.

[0015] The multi-stage transmission gearbox has a simple structure, saves trouble, has a short manufacturing period and low manufacturing cost. Moreover, due to the double power diversion in the box, it can transmit more power and have higher reliability under the same volume; or under the condition of transmitting the same power, the gearbox can be made smaller and more cost-effective.

[0016] Other advantages, objectives and features of the present invention will be described in the following description to some extent; and will be apparent to those skilled in the art based on the following examination and study to some extent; or, may be taught from the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a plan view of the gearbox of the present utility model.

[0018] Figure 2 For the utility model Figure 1 Schematic diagram of the cross section at AA.

[0019] Figure 3 For the utility model Figure 2 Schematic diagram of the connection between the gearbox body and the cover.

[0020] Figure 4 It is a schematic diagram of the gear shape of the utility model.

[0021] Figure 5 For the utility model Figure 3 Schematic diagram of the local area and inner stop at point A.

[0022] In the figure: 1. box body; 2. box cover; 3. input shaft; 4. transmission shaft; 5. output shaft; 6. first-stage driving gear; 7. first-stage passive gear; 8. second-stage driving gear; 9. second-stage passive gear; 10. inner stop; 11. sliding bearing. DETAILED DESCRIPTION

[0023] The following will be combined with the attached embodiment of the utility model Figure 1-5 , the technical solutions in the embodiments of the utility model are described clearly and completely. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments.

[0024] In order to solve the problems existing in the prior art, the present embodiment provides a split-flow torque testing machine gearbox, including a box body 1 and a box cover 2, the box body 1 and the box cover 2 are connected by fasteners, and are characterized in that an input shaft 3, two transmission shafts 4, and an output shaft 5 are rotatably installed in the box body 1, a primary driving gear 6 is sleeved on the input shaft 3, and a secondary driving gear 8 and a primary passive gear 7 are spaced apart on the two transmission shafts 4 by sleeves, and a secondary passive gear 9 is sleeved on the output shaft 5, the primary driving gear 6 is meshed with the two primary passive gears 7 at the same time, and the two secondary driving gears 8 are meshed with the secondary passive gear 9 at the same time.

[0025] Principle details of this embodiment:

[0026] A split-flow torque testing machine gearbox comprises a box body 1 and a box cover 2, the box body 1 and the box cover 2 are detachably connected via fasteners, an input shaft 3, two transmission shafts 4, and an output shaft 5 are rotatably installed in the box body 1, the two transmission shafts 4 are symmetrically arranged along the center lines of the input shaft 3 and the output shaft 5, a primary driving gear 6 is sleeved on the input shaft 3, a secondary driving gear 8 and a primary passive gear 7 are sleeved on the two transmission shafts 4, a secondary passive gear 9 is sleeved on the output shaft 5, the primary driving gear 6 is meshed with the two primary passive gears 7 at the same time, and the two secondary driving gears 8 are meshed with the secondary passive gear 9 at the same time.

[0027] When the input shaft 3 is driven, when the input shaft 3 rotates clockwise, the input shaft 3 drives the first-stage driving gear 6 to rotate clockwise, the first-stage driving gear 6 drives the two first-stage passive gears 7 to rotate counterclockwise synchronously, the two first-stage passive gears 7 drive the corresponding transmission shaft 4 to rotate counterclockwise, the transmission shaft 4 drives the corresponding second-stage driving gear 8 to rotate counterclockwise, the two second-stage driving gears 8 rotating counterclockwise simultaneously drive the second-stage passive gear 9 to rotate clockwise, and the second-stage passive gear 9 drives the output shaft 5 to rotate clockwise.

[0028] The first-stage driving gear 6 distributes the input torque to the two first-stage passive gears 7, and the two second-stage driving gears 8 transmit the combined driving torque to the second-stage passive gear 9, which cleverly realizes the load distribution. Compared with the single gear meshing, the double-path gear meshing evenly distributes the two-path driving torque, thereby reducing the load borne by the single gear. The double power distribution not only reduces wear and improves the service life of the equipment, but also has a simple structure and low manufacturing cost.

[0029] The multi-stage transmission gearbox has a simple structure, saves trouble, has a short manufacturing period and low manufacturing cost. Moreover, due to the double power diversion in the box body 1, it can transmit greater power and higher reliability under the same volume; or under the condition of transmitting the same power, the gearbox can be made smaller and more cost-effective.

[0030] Another common type is planetary transmission. This structural form can also achieve power diversion and reduce the load on a single gear, but this structure is relatively complex, bloated, and has high manufacturing costs.

[0031] In a further embodiment of the present solution, an inner stop 10 is provided on the end surface of the box body 1 , and the box cover 2 is embedded in the inner stop 10 .

[0032] Principle details of this embodiment:

[0033] An inner stop 10 is added to the end face of the case 1, and the case cover 2 is embedded in the inner stop 10, which tightly wraps the case cover 2 inside. This can effectively prevent the relative torsion and displacement between the case 1 and the case cover 2, and can ensure that the relative position of the case 1 and the case cover 2 is fixed, thereby increasing the stability of the gearbox and improving the reliability and service life of the gearbox.

[0034] In a further embodiment of the present scheme, the input shaft 3 and the first-stage driving gear 6, the transmission shaft 4 and the first-stage passive gear 7 and the second-stage driving gear 8, the output shaft 5 and the second-stage passive gear 9 are all integrally formed, and the gears and corresponding shafts are integrally formed, which not only simplifies the processing procedure and makes the processing and manufacturing more convenient, but also eliminates the assembly process between components, saves assembly cycle, reduces assembly steps, and makes equipment production more convenient and efficient.

[0035] In a further embodiment of the present scheme, the output shaft 5 and the input shaft 3 are both integrally formed with a center hole, which not only simplifies the structure but also reduces the manufacturing cost (to realize the function of this type of structural shaft, more than three parts including gears, shafts and splines are required, which will take a long time to manufacture and increase the cost); at the same time, the gears, shafts and center holes are integrally formed, and the same reference is used as the alignment reference during design and processing, which can cleverly avoid the manufacturing errors caused by combining multiple parts, multiple clamping and alignment, and multiple different references, and is more conducive to product accuracy (for example: the concentricity of the gear and the shaft, and the concentricity of the internal spline and the center hole).

[0036] In a further embodiment of the present scheme, the output shaft 5 is rotatably mounted in the housing 1 by means of a sliding bearing 11. The sliding bearing 11 used in the output shaft 5 realizes uniform axial and radial positioning, and the transmission shaft 4 and the input shaft 3 are positioned and installed by means of a deep groove ball bearing, which is smaller in size, simpler in structure, more reliable, and more economical than designing a rolling bearing; the sliding bearing 11 is an oil-free lubricated sliding bearing, characterized in that graphite is embedded in a copper alloy, has a self-lubricating function, and does not require additional lubrication, which reduces the burden of processing and installation and reduces costs.

[0037] In a further embodiment of the present scheme, the center hole is an inner square, and when power is input or output, only an outer square shaft head needs to be extended or inserted, eliminating the need for splines or couplings. In addition, the shaft head is larger and less likely to bend, thereby making the overall structure simpler, the connection stronger, and the reliability higher. It is also beneficial to optimize the overall structure and improve the overall reliability of the equipment.

[0038] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

[0039] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0040] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A split-flow torque testing machine gearbox, comprising a box body (1) and a box cover (2), wherein the box body (1) and the box cover (2) are connected via fasteners. It is characterized in that An input shaft (3), two transmission shafts (4), and an output shaft (5) are installed in the housing (1) in a rotationally spaced manner. The input shaft (3) is sleeved with a first-stage driving gear (6). The two transmission shafts (4) are sleeved with a second-stage driving gear (8) and a first-stage passive gear (7). The output shaft (5) is sleeved with a second-stage passive gear (9). The first-stage driving gear (6) is meshed with the two first-stage passive gears (7) at the same time, and the two second-stage driving gears (8) are meshed with the second-stage passive gear (9) at the same time.

2. A split-flow torque testing machine gearbox according to claim 1, It is characterized in that An inner stop (10) is provided on the end surface of the box body (1), and the box cover (2) is embedded in the inner stop (10).

3. A split-flow torque testing machine gearbox according to claim 1, It is characterized in that The input shaft (3) and the first-stage driving gear (6), the transmission shaft (4) and the first-stage passive gear (7) and the second-stage driving gear (8), and the output shaft (5) and the second-stage passive gear (9) are all integrally formed.

4. A split-flow torque testing machine gearbox according to claim 1, It is characterized in that The output shaft (5) is integrally formed with a center hole.

5. A split-flow torque testing machine gearbox according to claim 1, It is characterized in that The output shaft (5) is rotatably mounted in the housing (1) using a sliding bearing (11).

6. A split-flow torque testing machine gearbox according to claim 4, It is characterized in that The central hole is an inner square.

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