Angle adjusting device of high-strength limit torque transmission arm

Abstract

The utility model relates to an angle adjusting device of a high-strength limit torque transmission arm, and aims to solve the problems that when the current traditional transmission arm bears limit torque, a transmission shaft independently bears load, stress concentration is prone to occurring, deformation and even breakage are caused, and when the angle needs to be flexibly adjusted, the angle adjusting device is inconvenient to adjust. The rigid connection structure comprises an annular block, an annular groove is formed in the inner side of the annular block, eight lifting grooves are formed in the top end of the annular block, the lifting grooves communicate with the annular groove, and torque blocks are vertically and slidably connected to the inner sides of the lifting grooves; the torque blocks are arranged on the inner sides of the rotating blocks, flexible lifting is achieved, the effective bearing area of the cross section of the transmission shaft can be increased, stress can be dispersed, the torsion bearing capacity can be enhanced, the torque blocks can retract when too high torque is not needed, and therefore low rigidity is kept at the connecting position, friction is reduced, and the service life of the transmission shaft is prolonged. Abrasion is reduced for flexible angle adjustment.

Description

TECHNICAL FIELD

[0001] The utility model relates to transmission machinery technical field, concretely is angle adjusting device of high strength limit torque transmission arm. BACKGROUND

[0002] In the field of modern industrial machinery, transmission arm as the key component of power transmission and movement is widely used in various mechanical equipment, with the continuous development of industrial technology, the performance requirement of transmission arm is also higher and higher, especially in the working condition of bearing high strength limit torque, transmission arm not only needs to have enough strength and rigidity, but also needs to realize quick and accurate angle adjustment to adapt to the needs of different working environment.

[0003] The traditional transmission arm angle adjusting device generally has the problem that rigidity and flexibility are difficult to be considered: when bearing limit torque, because the transmission shaft bears the load alone, stress concentration leads to deformation or even fracture, and when the angle needs to be flexibly adjusted, the traditional rigid connection structure causes adjustment difficulty and aggravates wear due to too large friction resistance.

[0004] For example: some existing transmission arms adopt fixed rigid locking mechanism, which can temporarily enhance the carrying capacity under high torque working condition, but cannot dynamically adjust the rigidity according to the actual load, resulting in that the transmission shaft bears over-limit stress for a long time and shortens the service life. INVENTION CONTENTS

[0005] The utility model aims at overcoming the deficiency of prior art, adapting to the actual needs, providing angle adjusting device of high strength limit torque transmission arm to solve the technical problem that the traditional transmission arm bears limit torque, because the transmission shaft bears the load alone, stress concentration leads to deformation or even fracture, and when the angle needs to be flexibly adjusted, the traditional rigid connection structure causes adjustment difficulty and aggravates wear due to too large friction resistance.

[0006] In order to realize the utility model, the utility model adopts the technical scheme that a kind of angle adjusting device of high strength limit torque transmission arm is designed, including annular block, the inside of annular block is equipped with annular groove, the top of annular block is equipped with eight lifting grooves, the lifting groove is communicated with annular groove, the inside of lifting groove is vertically slidably connected with torque block, the bottom of transmission block directly above is equipped with slot, the transmission block is rotatably connected at the top of lower arm, the annular block is rotatably connected in the inside of lower arm below transmission block.

[0007] In the scheme, torque blocks are arranged on the inner side of the rotating block. When high-strength limit torque needs to be borne, the torque blocks are inserted into the insertion slots of the upper transmission blocks along the lifting grooves, so that the effective bearing area of the cross section of the transmission shaft is increased, the stress is dispersed, the torsional bearing capacity is enhanced, and when the torque is not too high, the torque blocks are retracted, so that the connection remains low stiffness, reduces friction and wear to facilitate flexible angle adjustment.

[0008] Preferably, the bottom of the transmission block is fixedly connected with a transmission shaft, the transmission shaft is located in the inner side of the lower arm, and eight auxiliary grooves are arranged in a circumferential array on the outer side wall of the upper end of the transmission shaft. The auxiliary grooves are in communication with the corresponding insertion slots.

[0009] In actual application, the auxiliary grooves mainly respond to the insertion of the clamping block. After the clamping block is inserted, the stability of the torque block can be ensured, and load distribution can be further achieved to reduce stress concentration and improve the strength of the limit torque of the device.

[0010] Preferably, a telescopic groove is arranged on the side wall of the torque block, a clamping block is slidably connected to the inner side of the telescopic groove, and a spring is fixedly connected between the clamping block and the inner side wall of the telescopic groove. The torque blocks in the eight lifting grooves are fixedly connected through a synchronous frame.

[0011] In actual application, the clamping block will be popped out under the action of the spring and inserted into the auxiliary groove to increase the stability of the torque block.

[0012] Preferably, a side groove is arranged in the inner side of the annular block on one side of the lifting groove, the side groove is in communication with the lifting groove, a lead screw is rotatably connected between the upper and lower inner walls of the side groove, a threaded block penetrates through the surface of the lead screw and is threadedly connected with the lead screw, and the threaded block is fixedly connected with the torque block on the inner side of the lifting groove on one side.

[0013] In actual application, the lead screw will drive the threaded block and the torque block to lift after being rotated, thereby completing the operation of inserting or separating from the insertion slot, which is convenient and fast.

[0014] Preferably, a lower groove is arranged in the inner side of the annular block below the side groove, a motor is fixedly connected to the inner top end of the lower groove below the lead screw, the tail end of the transmission shaft of the motor is fixedly connected with the bottom end of the lead screw, and a storage battery is fixedly connected to the inner side of the lower groove on one side of the motor.

[0015] In actual application, the motor has a small size, and its main function is to drive the lead screw to rotate, so as to adjust the position of the torque block.

[0016] Preferably, a vertical groove is arranged at the top end of the transmission block, the bottom end of the vertical groove is in communication with the eight auxiliary grooves, respectively, a pressure rod is vertically and slidably connected to the inner side of the vertical groove, eight push rods are fixedly connected to the bottom of the pressure rod, and the eight push rods are respectively located on the inner side of the eight auxiliary grooves.

[0017] In actual application, when the pressure rod is pressed down, the push rod will return the clamping block in the auxiliary groove to the telescopic groove, so that the torque block is separated from the insertion slot.

[0018] Preferably, the outer side wall of the transmission block is fixedly connected with eight indicating blocks in a circumferential array, and the top end edge of the lower arm is fixedly connected with a triangular block.

[0019] In actual application, when the indicating blocks are aligned with the triangular block, the torque block is just located below the insertion slot, and since the edge of the insertion slot is rounded, even if there is an error in the foot, the torque block can be inserted into the insertion slot.

[0020] Compared with the prior art, the utility model has the advantages that:

[0021] 1. The utility model discloses a torque block is arranged on the inner side of the rotating block, when high strength limit torque needs to be borne, the torque block is inserted into the insertion slot of the upper transmission block along the lifting groove, the effective bearing area of the transmission shaft cross section is improved, stress dispersion is made, torsional bearing capacity is enhanced, the overall rigidity characteristic is improved, and when too high torque is not needed, the torque block is retracted, so that the connecting place keeps lower rigidity, friction is reduced, and wear is reduced to carry out flexible angle adjustment.

[0022] 2. The utility model discloses a clamping block is arranged on the inner side of the torque block, when the torque block is completely inserted into the insertion slot, the clamping block is inserted into the auxiliary groove of the transmission shaft under the action of the spring, so that the torque block is integrated with the transmission shaft, the concentrated load of single transmission shaft is converted into distributed load of annular block, torque block and transmission shaft, the stability of the torque block is guaranteed, the pressure of the transmission shaft is reduced, and the limit torque bearing capacity is improved. DRAWINGS

[0023] Figure 1 It is the whole structure schematic diagram of the utility model;

[0024] Figure 2 It is the sectional structure schematic diagram of the utility model;

[0025] Figure 3 It is the lower cylinder structure schematic diagram of the utility model;

[0026] Figure 4 It is the annular groove place overhead structure schematic diagram of the utility model;

[0027] Figure 5 It is the torque block structure schematic diagram of the utility model;

[0028] Figure 6 It is the pressure rod structure schematic diagram of the utility model;

[0029] In the figure: 1, lower arm; 101, indicating block; 102, triangular block; 2, transmission block; 201, transmission shaft; 3, ring block; 301, ring groove; 302, lifting groove; 4, torque block; 401, telescopic groove; 402, spring; 403, clamping block; 404, synchronous frame; 5, side groove; 501, screw rod; 502, threaded block; 6, lower groove; 601, motor; 602, battery; 7, vertical groove; 8, pressing rod; 801, push rod; 9, insertion groove; 901, auxiliary groove. DETAILED DESCRIPTION

[0030] The utility model is further illustrated below in combination with the drawings and embodiments:

[0031] Embodiment 1: an angle adjusting device of a high-strength limit torque transmission arm, referring to Figures 1 to 6 , comprising a ring block 3, a transmission block 2 is rotationally connected at the top end of a lower arm 1, the bottom of the transmission block 2 is fixedly connected with a transmission shaft 201, the transmission shaft 201 is located at the inner side center of the lower arm 1, the transmission block 2 rotates under the driving of the transmission shaft 201, therefore the transmission shaft 201 will bear high-strength torque, the lower end of the transmission shaft 201 is connected with the tail end of the transmission shaft 201 of a driving mechanism such as a motor, the motor has a larger torque, and the motor can be installed at a suitable position according to actual needs, for example, the inner side of the lower arm 1, or a suitable position on the outer side of the lower arm 1; the ring block 3 is rotationally connected at the inner side of the lower arm 1 below the transmission block 2, the inner side of the ring block 3 is provided with a ring groove 301, the top end of the ring block 3 is provided with eight lifting grooves 302, the lifting grooves 302 are communicated with the ring groove 301, the inner side of the lifting groove 302 is vertically slidably connected with a torque block 4, the bottom of the transmission block 2 above the torque block 4 is provided with an insertion groove 9, the bottom edge of the insertion groove 9 is designed with a rounded corner, facilitating the insertion of the torque block 4, the ring block 3 has the ability to rotate, after the torque block 4 is aligned with the insertion groove 9, it can be lifted and inserted into the insertion groove 9, thereby increasing the contact area with the transmission block 2, driving the transmission block 2 to rotate together with the transmission shaft 201, reducing the pressure of the transmission shaft 201, improving the overall stiffness characteristics, and when the torque is not required to be too high, the torque block 4 is retracted, maintaining a lower stiffness and reducing friction, so as to facilitate flexible angle adjustment.

[0032] Specifically, the side wall of the torque block 4 is provided with a telescopic groove 401, a clamping block 403 is slidably connected to the inner side of the telescopic groove 401, and a spring 402 is fixedly connected between the clamping block 403 and the inner side wall of the telescopic groove 401. Eight auxiliary grooves 901 are circumferentially arranged on the outer side wall of the transmission shaft 201, and the auxiliary grooves 901 are in communication with the corresponding insertion grooves 9. When the torque block 4 is inserted into the insertion groove 9, the clamping block 403 in the telescopic groove 401 will be inserted into the auxiliary groove 901 on the side wall of the transmission shaft 201 under the pushing of the spring 402. At this time, the torque block 4 will be integrated with the transmission shaft 201. In actual use, the annular block 3 will rotate with the transmission shaft 201, which is equivalent to changing the original single transmission shaft 201 driving the transmission block 2 to rotate into the transmission shaft 201 and the entire annular block 3 driving the transmission block 2 to rotate together, which is equivalent to increasing the cross-sectional area of the transmission shaft 201, thereby reducing the pressure of the transmission shaft 201, increasing the overall rigidity characteristics, and improving the ultimate carrying capacity of the torque.

[0033] It is worth introducing that, as shown in Figure 1 , the outer side wall of the transmission block 2 is fixedly connected with eight indicating blocks 101 in a circumferential array, and the top edge of the lower arm 1 is fixedly connected with a triangular block 102. The indicating blocks 101 correspond one by one to the positions of the insertion grooves 9. By aligning the triangular block 102 with one of the indicating blocks 101, the torque block 4 reaches below the insertion groove 9, facilitating the insertion of the torque block 4.

[0034] Further, as shown in Figure 2 and Figure 6 , the top end of the transmission block 2 is provided with a vertical groove 7, the bottom end of the vertical groove 7 is in communication with the eight auxiliary grooves 901 respectively, the inner side of the vertical groove 7 is vertically slidably connected with a pressing rod 8, and the bottom of the pressing rod 8 is fixedly connected with eight push rods 801. The eight push rods 801 are respectively located on the inner side of the eight auxiliary grooves 901. When it is necessary to take out the clamping block 403 from the auxiliary groove 901, the push rod 801 at the bottom of the pressing rod 8 will push the clamping block 403 in the auxiliary groove 901 along the arc-shaped channel at this time, so that the clamping block 403 retracts into the telescopic groove 401 on the side wall of the torque block 4. At this time, the torque block 4 can be normally operated to descend and be separated from the insertion groove 9, facilitating the reduction of rigidity.

[0035] It should be noted that the push rod 801 herein slides in the arc-shaped channel and therefore has a certain bending ability. In order to ensure that the clamping block 403 can be pushed, the push rod 801 also needs to have a certain hardness. The material thereof can be a fiber-reinforced composite material, such as a carbon fiber-polyether ether ketone (CF / PEEK) composite material, or a special engineering plastic, which has bending ability and pushing rigidity at the same time.

[0036] It is worth mentioning that, as shown in Figure 2As shown in the figure, the inner side of the annular block 3 on one side of the lifting groove 302 is provided with a side groove 5, the side groove 5 is communicated with the lifting groove 302, the upper and lower inner walls of the side groove 5 are rotatably connected with a lead screw 501, the surface of the lead screw 501 is penetrated with a threaded block 502 and is threadedly connected with the threaded block 502, the threaded block 502 is fixedly connected with the torque block 4 on the inner side of the lifting groove 302 on one side, when the lifting of the torque block 4 needs to be adjusted, the lead screw 501 is rotated, the threaded block 502 will be lifted along the lead screw 501 in the rotating process, so as to drive the torque block 4 to be lifted together, the torque blocks 4 on the inner sides of the eight lifting grooves 302 are fixedly connected through a synchronous frame 404, so when one of the torque blocks 4 is lifted under the driving of the threaded block 502, the remaining torque blocks 4 will also be lifted, so as to complete the synchronous operation.

[0037] It is worth mentioning that, as Figure 2 As shown in the figure, the inner side of the annular block 3 below the side groove 5 is provided with a lower groove 6, the inner top end of the lower groove 6 below the lead screw 501 is fixedly connected with a motor 601, the tail end of the transmission shaft 201 of the motor 601 is fixedly connected with the bottom end of the lead screw 501, the inner side of the lower groove 6 on one side of the motor 601 is fixedly connected with a storage battery 602, the motor 601 can be rotated under the power supply of the storage battery 602, the lead screw 501 can be rotated in the rotating process, so as to complete the lifting operation of the torque block 4.

[0038] In addition, the components designed in the utility model are all general standard components or components known by the person skilled in the art, the structure and principle of which can be known by the person skilled in the art through a technical manual or through a conventional experimental method, the person skilled in the art can realize it completely, and it is needless to say, the content protected by the utility model does not involve the improvement of the internal structure and method.

[0039] The utility model discloses the embodiment discloses the preferable embodiment, but is not limited to this, the person skilled in the art, the person skilled in the art, very easily according to the above-mentioned embodiment, the spirit of the utility model is appreciated, and different is drawn and changes, but as long as not departing from the spirit of the utility model, is in the protection range of the utility model.

Claims

1. An angle adjustment device for a high-strength ultimate torque transmission arm, comprising an annular block (3), characterized in that, The inner side of the annular block (3) is provided with an annular groove (301), and the top of the annular block (3) is provided with eight lifting grooves (302). The lifting grooves (302) are connected to the annular grooves (301). The inner side of the lifting grooves (302) is vertically slidably connected with a torque block (4). The bottom of the transmission block (2) directly above the torque block (4) is provided with a slot (9). The transmission block (2) is rotatably connected to the top of the lower arm (1). The annular block (3) is rotatably connected to the inner side of the lower arm (1) below the transmission block (2).

2. The angle adjustment device for a high-strength ultimate torque transmission arm as described in claim 1, characterized in that, The bottom of the transmission block (2) is fixedly connected to a transmission shaft (201). The transmission shaft (201) is located in the center of the inner side of the lower arm (1). The upper end of the outer side wall of the transmission shaft (201) is provided with eight sub-slots (901) in a circular array. The sub-slots (901) are connected to the corresponding slots (9).

3. The angle adjustment device for a high-strength ultimate torque transmission arm as described in claim 1, characterized in that, The side wall of the torque block (4) is provided with a telescopic groove (401), and a locking block (403) is slidably connected to the inner side of the telescopic groove (401). A spring (402) is fixedly connected between the locking block (403) and the inner side wall of the telescopic groove (401). The torque blocks (4) inside the eight lifting grooves (302) are fixedly connected by a synchronous frame (404).

4. The angle adjustment device for a high-strength ultimate torque transmission arm as described in claim 1, characterized in that, A side groove (5) is provided on the inner side of the annular block (3) on one side of the lifting groove (302). The side groove (5) is connected to the lifting groove (302). A lead screw (501) is rotatably connected between the upper and lower inner walls of the side groove (5). A threaded block (502) passes through the surface of the lead screw (501) and is threadedly connected to the threaded block (502). The threaded block (502) is fixedly connected to the torque block (4) on the inner side of the lifting groove (302) on one side.

5. The angle adjustment device for a high-strength ultimate torque transmission arm as described in claim 4, characterized in that, A lower groove (6) is provided on the inner side of the annular block (3) below the side groove (5). A motor (601) is fixedly connected to the top of the lower groove (6) directly below the lead screw (501). The tail end of the drive shaft (201) of the motor (601) is fixedly connected to the bottom end of the lead screw (501). A storage battery (602) is fixedly connected to the inner side of the lower groove (6) on one side of the motor (601).

6. The angle adjustment device for a high-strength ultimate torque transmission arm as described in claim 1, characterized in that, The top of the transmission block (2) is provided with a vertical groove (7), the bottom of the vertical groove (7) is connected to eight sub-grooves (901) respectively, and a pressure rod (8) is vertically slidably connected to the inner side of the vertical groove (7). Eight push rods (801) are fixedly connected to the bottom of the pressure rod (8), and the eight push rods (801) are located on the inner side of the eight sub-grooves (901) respectively.

7. The angle adjustment device for a high-strength ultimate torque transmission arm as described in claim 1, characterized in that, The outer wall of the transmission block (2) is fixedly connected with eight indicator blocks (101) in a circular array, and the top edge of the lower arm (1) is fixedly connected with a triangular block (102).

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