阅读说明：本技术 制动器制动力矩传感器 (Brake torque sensor ) 是由 韩正方 韩伍林 李庆胜 侯增敏 赵永磊 崔德军 郝雄毅 于 2020-05-26 设计创作，主要内容包括：本发明涉及一种制动器制动力矩传感器,其结构包括：开设在制动器制动臂上的长圆形轴孔,用以感受在制动器刹车制动时使制动元件铰接轴能够沿制动摩擦力的方向产生随制动摩擦力的大小而变化的位移量并将所感受到的该位移量转变成在连接板板体上对应的板体形变的连接板,以及用以将连接板上随制动作用而产生的板体形变转换成受力信息,并将该受力信息以电信号或数字信号的形式向外发送的拉压传感器。本发明制动力矩传感器的检测结果与实际结果相符,能够及时检测出制动器发生的意外状况,提醒监管和维护人员及时消除制动器的故障和安全隐患,避免制动器因制动力矩降低或消失所引发的安全事故,有利于实现安全生产。(The invention relates to a brake torque sensor, the structure of which comprises: the brake device comprises a brake arm, a long circular shaft hole arranged on the brake arm of the brake, a connecting plate used for sensing the displacement of a hinge shaft of a brake element along the direction of brake friction force when the brake is applied and converting the sensed displacement into the deformation of a corresponding plate body on the connecting plate body, and a tension and compression sensor used for converting the deformation of the plate body on the connecting plate along with the brake action into stress information and sending the stress information outwards in the form of electric signals or digital signals. The detection result of the braking torque sensor is consistent with the actual result, the accident condition of the brake can be detected in time, supervision and maintenance personnel are reminded to eliminate the fault and potential safety hazard of the brake in time, the safety accident caused by reduction or disappearance of the braking torque of the brake is avoided, and the safe production is favorably realized.)

1. A brake braking torque sensor, comprising:

the long circular shaft hole is formed in the brake arm of the brake and used for bearing a brake element hinge shaft, the long direction of the long circular shaft hole is consistent with the direction of friction force applied to a friction surface of a brake element at the same height position with the axis of the brake element hinge shaft during brake, so that the brake element hinge shaft can generate displacement which is changed along the direction of the friction force along with the magnitude of the brake friction force during brake of the brake;

the connecting plate is a plate-shaped body, one end of the connecting plate is fixed on the brake arm of the brake, and the other end of the connecting plate is sleeved on the brake element hinge shaft through a closed hole or an open slot, so that the axis of the brake element hinge shaft is positioned at the long-axis central position of the long circular shaft hole of the brake arm under the static state; the connecting plate is used for sensing the braking displacement generated by the hinge shaft of the braking element in the long circular shaft hole when the brake is braked, and generating corresponding plate body deformation on the connecting plate; and

and the tension and compression sensor is fixed at the optimal position on the surface of the connecting plate, which can generate the deformation of the plate body, and is used for converting the deformation of the plate body generated along with the braking action on the connecting plate into stress information and sending the stress information outwards in the form of an electric signal or a digital signal.

2. The brake braking torque transducer of claim 1, wherein the connecting plate is an S-shaped plate having a rectangular profile, the tension and compression sensor is disposed in a center of a plate surface of the connecting plate, and a longitudinal centerline of the connecting plate coincides with a longitudinal centerline of the oblong shaft hole after the connecting plate is mounted on the brake arm of the brake.

3. The brake torque transducer of claim 1, wherein the connecting plate is a rectangular plate, the fixed end of the connecting plate fixed to the brake arm is a short end, rectangular notches are formed in two long sides of the connecting plate close to the fixed end, and the two rectangular notches are the same in size and are symmetrically distributed on the connecting plate; the tension and compression sensor is arranged on the bottom surface of the groove of the rectangular notch, and after the connecting plate is installed on a brake arm of the brake, the long-direction center line of the connecting plate is perpendicular to the long-direction center line of the long circular shaft hole.

4. The brake braking torque transducer of claim 2 or 3, wherein the closing hole is a circular hole having a diameter slightly larger than the diameter of the hinge shaft of the brake element, or an oblong hole having a radius slightly larger than the radius of the hinge shaft of the brake element; the long direction of the long round hole is vertical to the long direction of the long round shaft hole of the brake arm after the connecting plate is installed on the brake arm.

5. The brake torque transducer of claim 2 or 3, wherein the open slot is an open oblong hole with a semicircular opening removed, and the length direction of the open slot is perpendicular to the length direction of the oblong hole of the brake arm after the attachment plate is attached to the brake arm.

6. A brake braking torque sensor, comprising:

the brake shoe block is provided with an oblong shaft hole which is arranged on a brake shoe block of the outer holding block type brake and is used for connecting a brake shoe block hinge shaft in a penetrating way, and the length direction of the oblong shaft hole is consistent with the direction of friction force applied to the friction surface of the brake shoe block at the position with the same height as the axis of the brake shoe block hinge shaft during braking, so that the brake shoe block can generate displacement which is changed along the direction of the friction force along with the magnitude of the braking friction force during braking of the outer holding block type brake;

the connecting plate is a plate-shaped body, the upper end of the connecting plate is sleeved on the brake shoe block hinge shaft through the circular shaft hole, and the lower end of the connecting plate is hinged on the side wall of the brake shoe block through the hole shaft in a matched mode, so that the axis of the brake shoe block hinge shaft is positioned at the long-circle shaft hole of the brake shoe block in the middle in the length direction under the static state; the connecting plate is used for sensing the braking displacement generated by the brake shoe along the direction of the friction force when the outer holding block type brake brakes, and generating corresponding plate body deformation on the connecting plate; and

and the tension and compression sensor is fixed at the optimal position on the surface of the connecting plate, which can generate the deformation of the plate body, and is used for converting the deformation of the plate body generated along with the braking action on the connecting plate into stress information and sending the stress information outwards in the form of an electric signal or a digital signal.

7. The brake braking torque transducer of claim 6, wherein the connecting plate is an S-shaped plate with a rectangular outline, the tension and compression sensor is arranged in the middle of the plate surface of the connecting plate, and after the connecting plate is installed on the brake shoe of the outer surrounding block type brake, the long-direction center line of the connecting plate is coincident with the long-direction center line of the long circular shaft hole.

8. A brake braking torque sensor, comprising:

the long circular shaft hole is formed in a brake pad of the arm disc brake and used for penetrating and connecting a brake pad hinge shaft, the long direction of the long circular shaft hole is consistent with the direction of friction force applied to a position on a friction surface of the brake pad at the same height with the axis of the brake pad hinge shaft during braking, so that the brake pad can generate displacement which is changed along the direction of the friction force along with the magnitude of the braking friction force during braking of the arm disc brake;

the connecting plate is a plate-shaped body, the lower end of the connecting plate is sleeved on a brake shoe hinge shaft extending into the space between the two rib plates on the back of the brake shoe through a circular shaft hole, and the upper end of the connecting plate is provided with a through hole which is sleeved on a pin shaft arranged between the two rib plates on the back of the brake shoe, so that the connecting plate is longitudinally arranged in a groove formed between the two rib plates on the back of the brake shoe; the connecting plate is used for sensing the braking displacement generated by the brake shoe along the direction of the friction force when the arm disc type brake brakes and generates corresponding plate body deformation on the connecting plate; and

and the tension and compression sensor is fixed at the optimal position on the surface of the connecting plate, which can generate the deformation of the plate body, and is used for converting the deformation of the plate body generated along with the braking action on the connecting plate into stress information and sending the stress information outwards in the form of an electric signal or a digital signal.

9. The brake braking torque transducer of claim 8, wherein the connecting plate is an S-shaped plate having a rectangular profile, the tension and compression sensor is disposed in a center portion of a plate surface of the connecting plate, and a longitudinal centerline of the connecting plate coincides with a longitudinal centerline of the oblong shaft hole after the connecting plate is mounted on the brake pad of the arm disc brake.

Technical Field

The invention relates to a brake torque sensor, in particular to a brake torque sensor.

Background

At present, a braking torque detection device installed on an electric hydraulic arm disc brake is characterized in that a pressure sensor for detecting the working pressure of a braking spring is additionally installed in a spring box for installing the braking spring, the working pressure of the braking spring is basically equal to the positive pressure when a braking disc of the brake performs friction braking on the braking disc, the magnitude of the friction force applied by the braking disc to the braking disc can be obtained by multiplying the numerical value of the positive pressure by the friction coefficient between the braking disc and the braking disc, and the braking torque of the brake can be obtained by combining the radius of the braking disc, so that the braking torque of the brake can be detected.

The detection mode can only detect the magnitude of the braking torque of the electric hydraulic arm disc brake under the normal working condition, once the braking arm of the brake is jacked, the working pressure of the braking spring still exists and does not change, and at the moment, the braking torque detection device can still obtain the detection result that the braking torque is normal, but actually, the brake does not have any braking force at the moment. In addition, if the friction plate on the brake disc falls off, at the moment, the brake torque detection device can also send out a detection result that the brake torque is normal because the working pressure of the brake spring still exists. When the friction coefficient between the brake disc and the brake disc changes due to oil dripping, water dripping or friction overheating and the like on the brake disc, the braking torque detection device still sends out a detection result that the braking torque is normal.

The reason why the brake torque detection result that does not match the actual situation appears is that the brake torque detection device cannot actually detect the magnitude of the brake friction force because the brake friction force is estimated by the positive pressure, and therefore, the situation where the detection result does not match the actual result is naturally unavoidable. The braking torque detection device is mainly used for detecting the accident condition of the brake in time so as to avoid the safety accident and reduce or even avoid the serious loss of life and property of people.

Disclosure of Invention

The invention aims to provide a brake braking torque sensor to solve the problem that the detection result of braking torque detection is inconsistent with the fact in an unexpected situation.

The purpose of the invention is realized as follows: a brake braking torque sensor comprising:

the long circular shaft hole is formed in the brake arm of the brake and used for bearing a brake element hinge shaft, the long direction of the long circular shaft hole is consistent with the direction of friction force applied to a friction surface of a brake element at the same height position with the axis of the brake element hinge shaft during brake, so that the brake element hinge shaft can generate displacement which is changed along the direction of the friction force along with the magnitude of the brake friction force during brake of the brake;

the connecting plate is a plate-shaped body, one end of the connecting plate is fixed on the brake arm of the brake, and the other end of the connecting plate is sleeved on the brake element hinge shaft through a closed hole or an open slot, so that the axis of the brake element hinge shaft is positioned at the long-circle shaft hole central position of the brake arm under the static state, and the brake element and the brake arm are connected in a suspension manner; the connecting plate is used for sensing the braking displacement generated by the hinge shaft of the braking element in the long circular shaft hole when the brake is braked, and generating corresponding plate body deformation on the connecting plate; and

and the tension and compression sensor is fixed at the optimal position on the surface of the connecting plate, which can generate the deformation of the plate body, and is used for converting the deformation of the plate body generated along with the braking action on the connecting plate into stress information and sending the stress information outwards in the form of an electric signal or a digital signal.

The connecting plate is an S-shaped plate body with a rectangular outline, the tension and compression sensor is arranged in the middle of the plate surface of the connecting plate, and after the connecting plate is installed on a brake arm of the brake, the long-direction central line of the connecting plate coincides with the long-direction central line of the long circular shaft hole.

The connecting plate is a rectangular plate body, a fixed end of the connecting plate fixed on the brake arm of the brake is a short-side end, two long sides of the connecting plate body close to the fixed end are respectively provided with a rectangular notch, and the two rectangular notches are the same in size and are symmetrically distributed on the connecting plate; the tension and compression sensor is arranged on the bottom surface of the groove of the rectangular notch, and after the connecting plate is installed on a brake arm of the brake, the long-direction center line of the connecting plate is perpendicular to the long-direction center line of the long circular shaft hole.

The closed hole is a round hole with the diameter slightly larger than that of the hinge shaft of the braking element, or a long round hole with the round radius slightly larger than that of the hinge shaft of the braking element; the long direction of the long round hole is vertical to the long direction of the long round shaft hole of the brake arm after the connecting plate is installed on the brake arm.

The opening groove is an opening long round hole with a semicircular hole opening removed, and the length direction of the opening groove is perpendicular to the length direction of the long round shaft hole of the brake arm after the connecting plate is installed on the brake arm.

When the braking element on the brake clamps the braked element on the equipment to implement braking, the friction braking is realized by means of the friction force between the braked element and the braked element, and the magnitude of the braking torque of the brake is actually represented by the magnitude of the friction force; when the brake brakes, the displacement of the brake element hinge shaft in the long circular shaft hole on the brake arm along the direction of the friction force is in direct proportion to the magnitude of the friction force, so as long as the brake displacement of the brake element hinge shaft can be detected and converted into detection data capable of reflecting the magnitude of the friction force, the detection of the friction force of the brake is realized, and the radius of the braked element of the brake (namely the acting arm of the friction force) is matched to obtain the magnitude of the brake torque. That is, when the brake element brakes, the real-time detection of the brake torque can be realized if the friction force generated when the brake is applied is obtained by multiplying the positive pressure applied by clamping the braked element (such as a cylindrical brake drum or a disc-shaped brake disc) by the friction coefficient between the brake element and the braked element.

The axle hole of the hinge shaft of the braking element on the braking arm is opened into the oblong axle hole, and the braking element is connected with the braking arm in a suspending way through the connecting plate, so that the hinge shaft of the braked element can generate braking displacement which is changed along with the change of the braking friction force when the brake is braked; the connecting plate can well sense the displacement, the sensed braking displacement can be converted into the deformation of the plate body of the connecting plate, the plate body deformation on the connecting plate is converted into an electric signal with the stress magnitude by the tension and compression sensor, and the electric signal is sent outwards, so that the real-time detection of the braking friction force of the brake is realized, and the real-time detection of the braking torque of the brake is also realized. The key to the present invention is this.

The invention can also be realized as follows: a brake braking torque sensor comprising:

the brake shoe block is provided with an oblong shaft hole which is arranged on a brake shoe block of the outer holding block type brake and is used for connecting a brake shoe block hinge shaft in a penetrating way, and the length direction of the oblong shaft hole is consistent with the direction of friction force applied to the friction surface of the brake shoe block at the position with the same height as the axis of the brake shoe block hinge shaft during braking, so that the brake shoe block can generate displacement which is changed along the direction of the friction force along with the magnitude of the braking friction force during braking of the outer holding block type brake;

the connecting plate is a plate-shaped body, the upper end of the connecting plate is sleeved on the brake shoe block hinge shaft through the circular shaft hole, the lower end of the connecting plate is hinged on the side wall of the brake shoe block through the hole shaft in a matched mode, and the axis of the brake shoe block hinge shaft is located at the long-circle shaft hole central position of the brake shoe block under the static state, so that the brake shoe block and the brake arm are in suspension connection; the connecting plate is used for sensing the braking displacement generated by the brake shoe along the direction of the friction force when the outer holding block type brake brakes, and generating corresponding plate body deformation on the connecting plate; and

and the tension and compression sensor is fixed at the optimal position on the surface of the connecting plate, which can generate the deformation of the plate body, and is used for converting the deformation of the plate body generated along with the braking action on the connecting plate into stress information and sending the stress information outwards in the form of an electric signal or a digital signal.

The connecting plate is an S-shaped plate body with a rectangular outline, the tension and compression sensor is arranged in the middle of the surface of the connecting plate, and after the connecting plate is installed on a brake shoe block of the outer holding block type brake, the long-direction central line of the connecting plate coincides with the long-direction central line of the long circular shaft hole.

The invention can also be realized as follows: a brake braking torque sensor comprising:

the long circular shaft hole is formed in a brake pad of the arm disc brake and used for penetrating and connecting a brake pad hinge shaft, the long direction of the long circular shaft hole is consistent with the direction of friction force applied to a position on a friction surface of the brake pad at the same height with the axis of the brake pad hinge shaft during braking, so that the brake pad can generate displacement which is changed along the direction of the friction force along with the magnitude of the braking friction force during braking of the arm disc brake;

the connecting plate is a plate-shaped body, the lower end of the connecting plate is sleeved on a brake shoe hinging shaft extending into the space between the two rib plates on the back of the brake shoe through a circular shaft hole, and the upper end of the connecting plate is provided with a through hole which is sleeved on a pin shaft arranged between the two rib plates on the back of the brake shoe, so that the connecting plate is longitudinally arranged in a groove formed between the two rib plates on the back of the brake shoe, and the brake shoe and the brake arm are connected in a suspension manner; the connecting plate is used for sensing the braking displacement generated by the brake shoe along the direction of the friction force when the arm disc type brake brakes and generates corresponding plate body deformation on the connecting plate; and

and the tension and compression sensor is fixed at the optimal position on the surface of the connecting plate, which can generate the deformation of the plate body, and is used for converting the deformation of the plate body generated along with the braking action on the connecting plate into stress information and sending the stress information outwards in the form of an electric signal or a digital signal.

The connecting plate is an S-shaped plate body with a rectangular outline, the tension and compression sensor is arranged in the middle of the plate surface of the connecting plate, and after the connecting plate is installed on a brake pad of the arm disc brake, the long-direction central line of the connecting plate is overlapped with the long-direction central line of the long circular shaft hole.

The invention overcomes the false alarm phenomenon that the detection result of the existing brake torque sensor is inconsistent with the actual situation under the unexpected situation of the brake because the brake friction force of the brake can not be detected, and the detection result can change along with the change of the friction coefficient between the brake element and the braked element and is consistent with the actual situation because of the real-time detection of the brake friction force, thereby being capable of detecting the unexpected situation of the brake in time, reminding supervision and maintenance personnel to eliminate the fault and the potential safety hazard of the brake in time, avoiding the safety accident of the brake caused by the loss of goods due to the reduction of the brake torque, being beneficial to realizing the safe production, being beneficial to the safe use of production and conveying equipment and ensuring the safety of lives and properties of people.

Drawings

Fig. 1 is a schematic structural view of an arm disc brake.

Fig. 2 is a schematic structural view of a braking torque sensor embodiment 1 of the present invention.

Fig. 3 and 4 are schematic structural views of two connection plates used in embodiment 1.

Fig. 5 is a schematic structural view of embodiment 2 of the braking torque sensor of the present invention.

Fig. 6 and 7 are schematic structural views of two types of connection plates used in embodiment 2.

Fig. 8 is a schematic structural view of embodiment 3 of the braking torque sensor of the present invention.

Fig. 9 is a schematic structural view of embodiment 4 of the braking torque sensor of the present invention.

Fig. 10 is a schematic structural view of a shoe block in embodiment 4.

Fig. 11 is a plan view of a braking torque sensor embodiment 5 of the present invention.

Fig. 12 is a schematic side view of a brake pad according to embodiment 5.

FIG. 13 is a partial structural view of embodiment 5.

In the figure: 1. the brake shoe comprises a brake arm, 2, a brake shoe articulated shaft, 3, an oblong shaft hole, 4, a connecting plate, 5, a closed hole, 6, an open slot, 7, a tension and compression sensor, 8, a brake shoe, 9, a brake shoe articulated shaft, 10, a brake drum, 11, a rectangular notch, 12, a brake shoe, 13, a ribbed plate, 14 and a pin shaft.

Detailed Description