Motor anti-lock mechanism

Abstract

The utility model discloses a motor anti-lock mechanism, which comprises a screw rod transmission assembly, a base connected with a sliding seat, a screw rod transmission assembly, a screw rod transmission assembly, a screw rod transmission assembly, a screw rod transmission assembly and a screw rod transmission assembly, and is characterized in that the screw rod transmission assembly is provided with the screw rod transmission assembly; the first movable body is arranged in the base, an elastic piece is arranged between the first movable body and the base, and the first movable body can overcome the elastic force of the elastic piece and move horizontally under the action of external force; the second movable body is arranged in the base and detachably connected with the sliding seat; wherein a first connecting piece is arranged on the first movable body, a second connecting piece is arranged on the second movable body, the first connecting piece is in sliding fit with the second connecting piece, the first movable body can drive the second movable body to do lifting motion when moving horizontally, and the second movable body can be connected into or separated from the sliding base in the lifting motion process. The motor protection device has an overload protection effect and effectively prevents the motor from being locked.

Description

TECHNICAL FIELD

[0001] The utility model relates to mechanical drive technical field, concretely relates to a motor anti -lock mechanism. BACKGROUND

[0002] In industrial automation equipment, screw rod transmission mechanism is widely used in linear motion control field because of its high precision and high load capacity. In the prior art, the screw rod transmission system is usually driven by a servo motor to rotate the screw rod, and the rotary motion is converted into linear motion through the nut seat to realize precise positioning. However, the following technical defects exist in the actual application of this transmission mode: when the motor drives the nut seat to move quickly to the target position, the control system needs to realize emergency braking through the electromagnetic brake or the brake device, but due to the inertia effect of the mechanical transmission system, the nut seat will continue to slide due to inertia after power-off, which will cause the motor to bear additional torque impact and may cause lock, and will also cause wear to the screw rod assembly. Therefore, a buffer structure needs to be developed to avoid damage to the motor. SUMMARY

[0003] The utility model discloses in order to avoid the prior art's insufficient, provide a motor anti -lock mechanism.

[0004] The utility model discloses a motor anti -lock mechanism, including screw rod transmission assembly, the screw rod transmission assembly has the slide with the linear motion of screw rod, still including:

[0005] The base connected with the slide;

[0006] The movable body one is arranged in the base, the elastic member is arranged between the movable body one and the base, the movable body one can overcome the elastic force of the elastic member and carry out horizontal motion under the action of external force;

[0007] The movable body two is arranged in the base, the movable body two is detachably connected with the slide;

[0008] Among them, the coupling piece one is arranged on the movable body one, the coupling piece two is arranged on the movable body two, the coupling piece one and the coupling piece two slide fit, and the movable body one can drive the movable body two to make lifting motion when horizontal motion, the movable body two can be connected or disconnected with the slide in the lifting motion process.

[0009] In several embodiments, the coupling piece one is an inclined chute, the coupling piece two is a slide rod, and the coupling piece two penetrates into the coupling piece one and can move along the coupling piece one.

[0010] In several embodiments, the base and the side in contact with the movable body two are provided with a second limiting groove extending longitudally, and the movable body two is arranged in the second limiting groove and moves along the second limiting groove.

[0011] In some embodiments, the base is provided with a first limiting slot extending transversely on the side in contact with the movable body I, and the movable body I is arranged in the first limiting slot and moves along the first limiting slot.

[0012] In some embodiments, the base comprises a seat body I and a seat body II connected detachably, the movable body I and the movable body II are arranged between the seat body I and the seat body II, the first limiting slot is arranged on the seat body I, and the second limiting slot is arranged on the seat body II.

[0013] In some embodiments, the sliding base comprises a base plate and a nut seat arranged on the base plate, the nut seat is in transmission connection with the screw rod, the nut seat is provided with an inward recess and forms a receiving end, the lower end of the movable body II is provided with a downward protrusion and forms an access end, and the access end is inserted and matched with the receiving end.

[0014] In some embodiments, the base I and the base II are both connected with the base plate, and a guide rod is arranged between the base I, the base II and the base plate.

[0015] In some embodiments, the upper end of the movable body II is provided with a connecting plate, and the movable body II is detachably provided with an embedded block, and the connecting plate is connected with the embedded block through a locking member.

[0016] In some embodiments, a plurality of connecting columns are arranged on the movable body I and the seat body I, and the elastic member is connected with the connecting columns.

[0017] In some embodiments, the end of the screw rod transmission assembly is provided with a positioning block, and when the movable body I moves to the positioning block along with the sliding base, the movable body I can abut against the positioning block and promote the horizontal movement of the movable body I.

[0018] The utility model has the advantages that:

[0019] The utility model has the overload protection effect, when the motor brake delay leads to inertial impact, can separate the action of nut seat fast and automatically, reduces the motor shaft load torque, effectively prevents the motor dead phenomenon to appear.

[0020] The utility model has the flexible reset function, realizes the automatic reset through the elastic member.

[0021] The utility model through the structure of connecting piece I and connecting piece II, converts impact energy into the vertical movement of movable part II and the horizontal movement of movable part I, reduces mechanical impact damage. BRIEF DESCRIPTION OF DRAWINGS

[0022] The accompanying drawings described herein are for illustrative purposes only and do not represent all possible implementations, nor should they be considered as limiting the scope of this invention.

[0023] Figure 1 This is a schematic diagram of the overall structure of the motor anti-lock braking mechanism in Example 1;

[0024] Figure 2 for Figure 1 A partially enlarged schematic diagram;

[0025] Figure 3 for Figure 1 A partial diagram of the explosion. Detailed Implementation

[0026] The embodiments of the present utility model will now be described in detail with reference to the accompanying drawings. To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of the present utility model, but not all embodiments.

[0027] Therefore, the following detailed description of the embodiments of the present invention provided in conjunction with the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0028] Example 1

[0029] like Figures 1-3 As shown, the motor anti-lock mechanism in this embodiment is mainly composed of a lead screw drive assembly 100, a base 10 connected to the lead screw drive assembly, a movable body 20 disposed in the base 10, and a movable body 30 disposed in the base 10. The lead screw drive assembly 100 is conventionally composed of a motor, a lead screw, a slide 110 that moves linearly with the lead screw, fixed seats at both ends, and two guide rods. When the movable body 20 and the movable body 30 move to a designated position, they can make corresponding displacements to achieve buffering and allow the lead screw to rotate freely, thus preventing the motor from locking up due to force.

[0030] Here, the slide 110 includes a base plate 111 and a nut seat 112 disposed on the base plate 111, the nut seat 112 being connected to the lead screw drive.

[0031] Specifically, the base 10 is connected with the sliding seat 110, the base 10 comprises a seat body one 11 and a seat body two 12 which are detachably connected, the movable body one 20 and the movable body two 30 are arranged between the seat body one 11 and the seat body two 12, the base 10 is in contact with the movable body two 30 on one side, i.e. the seat body one 11 is provided with a longitudinally extending second limiting groove 102, the movable body one 20 is arranged in the first limiting groove 101 and moves along the first limiting groove 101, and the base 10 is in contact with the movable body one 20 on the other side, i.e. the seat body two 12 is provided with a transversely extending first limiting groove 101, the movable body two 30 is arranged in the second limiting groove 102 and moves along the second limiting groove 102.

[0032] Here, the seat body one 11 and the seat body two 12 are connected by screws, and holes are provided on the movable body one 20 for the screws to pass through.

[0033] In addition, the base 10 one and the base 10 two are both connected with the base plate 111, and guide rods are arranged between the base 10 one, the base 10 two and the base plate 111 respectively.

[0034] Among them, the elastic member 41 is arranged between the movable body one 20 and the base 10, the movable body one 20 can overcome the elastic force of the elastic member 41 and move horizontally under the action of external force, a plurality of connecting columns 42 are arranged on the movable body one 20 and the seat body one 11, the elastic member 41 is connected with the connecting column 42, the elastic member 41 adopts a tension spring structure and is symmetrically arranged on opposite sides of the movable body one 20, and each elastic member 41 is connected between the movable body one 20 and the base 10.

[0035] In addition, the coupling member one 21 is arranged on the movable body one 20, the coupling member two 31 is arranged on the movable body two 30, the coupling member one 21 and the coupling member two 31 are in sliding fit, and the movable body one 20 can drive the movable body two 30 to move up and down when moving horizontally, and the movable body two 30 can be connected to or separated from the sliding seat 110 during the up and down movement, so as to realize the separable connection between the movable body two 30 and the sliding seat 110.

[0036] Among them, the coupling member one 21 is an inclined chute and is generally symmetrically arranged in a V shape, the coupling member two 31 is a slide rod, and the coupling member two 31 penetrates into the coupling member one 21 and can move along the coupling member one 21.

[0037] In addition, the nut seat 112 has an inward recess and forms a receiving end 113, the lower end of the movable body two 30 has a downward protrusion and forms an access end 301, and the access end 301 is in plug-in fit with the receiving end 113.

[0038] The upper end of the movable body two 30 is provided with a connecting plate 51, the movable body two 30 is detachably provided with an embedded block 32, the connecting plate 51 is connected with the embedded block 32 through a locking piece, the connecting plate 51 is used to connect a clamp, the clamp clamps a workpiece, the locking piece adopts a bolt structure, and the embedded block 32 is inserted into the movable body two 30, the replaceable embedded block 32 structure can avoid replacement of the whole movable body two 30 and reduce cost due to possible damage of the bolt connection position.

[0039] And the end of the screw rod transmission assembly 100 is provided with a positioning block 120, the movable body one 20 can abut against the positioning block 120 and promote horizontal movement of the movable body one 20 when the movable body one 20 moves to the positioning block 120 along the sliding seat 110.

[0040] The utility model discloses when using, when movable body one 20 moves to the positioning block 120 position of left end along the screw rod, reach the specified station, movable body one 20 force will displace to the right side straight, under the cooperation of connecting piece one 21 and connecting piece two 31, make movable body two 30 go up, separate the screw rod structure, and the motor idling avoids lock, when movable body one 20 separates the positioning block 120, movable body one 20 resets under the spring action, and movable body two 30 resets correspondingly.

[0041] All the modes described in the specification can be performed in any suitable order. Any and all examples used, or exemplary language provided, such as "for example," are only intended to better illustrate the present utility and are not intended to limit the scope of the present utility, unless claimed. Language in the specification should not be understood, by itself, to indicate any needless practice of the present utility.

[0042] The utility model discloses including the all improvement that the utility model main idea and range defined by claim book include. Moreover, unless otherwise stated or content is obvious contradiction, the utility model includes any above-mentioned factor and all possible changes thereof.

Claims

1. An anti-lock braking mechanism for an electric motor, comprising a lead screw drive assembly (100), the lead screw drive assembly (100) having a slide (110) that moves linearly with the lead screw, characterized in that, Also includes: A base (10) connected to the slide (110); A movable body (20) is set inside the base (10). An elastic element (41) is provided between the movable body (20) and the base (10). The movable body (20) can overcome the elastic force of the elastic element (41) and move horizontally under the action of external force. A movable body two (30) is set inside the base (10), and the movable body two (30) is detachably connected to the slide (110); wherein, the movable body one (20) is provided with a connecting part one (21), and the movable body two (30) is provided with a connecting part two (31). The connecting part one (21) and the connecting part two (31) are slidably engaged, and the movable body one (20) can drive the movable body two (30) to make a lifting movement when it moves horizontally. The movable body two (30) can be engaged with or disengaged from the slide (110) during the lifting movement.

2. The motor anti-lock braking mechanism according to claim 1, characterized in that, The first connecting member (21) is an inclined sliding groove, and the second connecting member (31) is a sliding rod. The second connecting member (31) passes through the first connecting member (21) and can move along the first connecting member (21).

3. The motor anti-lock braking mechanism according to claim 1, characterized in that, The base (10) is provided with a longitudinally extending second limiting groove (102) on the side that contacts the movable body two (30). The movable body two (30) is disposed in the second limiting groove (102) and moves along the second limiting groove (102).

4. The motor anti-lock braking mechanism according to claim 3, characterized in that, The base (10) is provided with a first limiting groove (101) extending laterally on the side that contacts the movable body (20). The movable body (20) is disposed in the first limiting groove (101) and moves along the first limiting groove (101).

5. The motor anti-lock braking mechanism according to claim 4, characterized in that, The base (10) includes a detachably connected seat body one (11) and seat body two (12), the movable body one (20) and movable body two (30) are disposed between seat body one (11) and seat body two (12), the first limiting groove (101) is disposed on seat body one (11), and the second limiting groove (102) is disposed on seat body two (12).

6. The motor anti-lock braking mechanism according to claim 5, characterized in that, The slide (110) includes a base plate (111) and a nut seat (112) disposed on the base plate (111). The nut seat (112) is connected to the lead screw. The nut seat (112) has an inward recess and forms a receiving end (113). The lower end of the movable body (30) has a downward protrusion and forms an access end (301). The access end (301) and the receiving end (113) are inserted into each other.

7. The motor anti-lock braking mechanism according to claim 6, characterized in that, Both base (10) one and base (10) two are connected to the substrate (111), and a guide rod is provided between base (10) one, base (10) two and the substrate (111).

8. The motor anti-lock braking mechanism according to claim 1, characterized in that, The upper end of the movable body 2 (30) is provided with a connecting plate (51), and the movable body 2 (30) is provided with a separable insert (32). The connecting plate (51) is connected to the insert (32) through a locking member.

9. A motor anti-lock braking mechanism according to claim 5, characterized in that, Multiple connecting posts (42) are provided on the movable body (20) and the seat body (11), and the elastic element (41) is connected to the connecting posts (42).

10. The motor anti-lock braking mechanism according to claim 1, characterized in that, The end of the lead screw drive assembly (100) is provided with a positioning block (120). When the movable body (20) moves with the slide (110) to the positioning block (120), it can abut against the positioning block (120) and cause the movable body (20) to move horizontally.

Images