A motor with limit protection function

Abstract

The present invention relates to a motor with a limit protection function, comprising a motor body, a limit head body, a motor fixing frame, a motor output shaft group, and a motor connection box, wherein the motor fixing frame is fixed to both side ends and the bottom side of the motor body, the motor output shaft group is arranged at the front side end of the motor body, the limit head body is fixed to the front side end of the motor body by a fixing bolt group, and the motor connection box is fixed to the outer side of the motor body. The present invention optimizes the design of the motor limit head, changes the function of the reducer driven by the traditional motor, and designs a limit head that can adjust the torque of the motor output shaft. The structure can reduce the damage caused by the strong torque stress of the motor, protect the internal structure of the motor, effectively reduce the failure rate of the motor, and also reduce the damage to the transmission facilities driven by the motor, and is suitable for popularization and use.

Description

Technical Field

[0001] The present invention relates to the field of motors, and in particular to a motor with a position limiting protection function. Background Art

[0002] The motor is the most common mechanical drive device in existence today. It is a mechanical drive device that uses electromagnetic induction to convert electrical energy into kinetic energy. There are many models and types of motors, which results in the need for motors of different models and specifications in different places. This can meet some conditions with higher requirements, but for temporary use or simple conditions, it is often not possible to match the corresponding motor. In this way, the reducer head can be used in conjunction to achieve the effect, but the structure of the reducer head is also very large, which results in the limitation of the installation space; and because the conditions for the application of the motor are very complex, there may also be many safety problems caused by the transmission system of the motor. In many cases, the motor cannot be stopped in time to control the scene, which causes the further development of the accident or the deterioration of the situation. If the motor encounters greater resistance during operation, it may cause the motor to burn directly, which causes great losses; especially in the process of motor operation, if there is a fault problem, the strong instantaneous torque of the motor can cause the motor and the transmission system associated with the motor to be severely deformed and damaged. In order to control the motor to work within a safe torque range, a motor with limit protection function is designed. Summary of the invention

[0003] The purpose of the present invention is to provide a motor with a limit protection function to solve the above technical problems. To achieve the above purpose, the present invention adopts the following technical solutions:

[0004] A motor with a limit protection function comprises a motor body, a limit head body, a motor fixing frame, a motor output shaft group, and a motor connection box, wherein the motor fixing frame is fixed to both side ends and the bottom side of the motor body, the motor output shaft group is arranged at the front side end of the motor body, the limit head body is fixed to the front side end of the motor body by a fixing bolt group, and the motor output shaft group is connected to the inner and rear end of the limit head body, the motor connection box is fixed to the outer side surface of the motor body, and the motor connection box is connected to the motor body.

[0005] On the basis of the above technical scheme, the motor output shaft group consists of a motor spline output shaft and a positioning convex sleeve. The motor spline output shaft passes through the front side of the motor fixing frame to connect to the motor body. The positioning convex sleeve is arranged on the outside of the motor spline output shaft, and the positioning convex sleeve is fixed to the front side of the motor fixing frame. The front side of the motor fixing frame is provided with multiple groups of fixing screw holes, and the multiple groups of fixing screw holes are arranged at equal circular angles on the outside of the positioning convex sleeve. The motor spline output shaft is connected to the inner rear side of the limit head body, and the positioning convex sleeve is embedded in the rear side end of the limit head body. The rear side end of the limit head body is fixed to the fixing screw hole on the motor fixing frame by a fixing bolt group.

[0006] On the basis of the above technical scheme, the limit head body is composed of a limit mechanism, a machine-end fixing part, and a pancake-end connecting bearing part. The inner side of the pancake-end connecting bearing part is fixed to the outer side of the rear end of the limit mechanism, and the machine-end fixing part is fixed to the outer side of the pancake-end connecting bearing part. The machine-end fixing part is composed of a fixing ring sleeve and side fixing ears. The side fixing ears are provided with multiple groups, and the multiple groups of side fixing ears are arranged at equal circumferential angles on the outer side of the fixing ring sleeve, and the fixing ring sleeve and the side fixing ears are integrally formed. An anti-slip groove is provided on the inner side of the rear side surface of the fixing ring sleeve, and the outer end of the pancake-end connecting bearing part is fixedly embedded in the anti-slip groove, the machine-end fixing part can rotate on the outside of the pancake-end connecting bearing part, and the limiting mechanism can rotate on the inside of the pancake-end connecting bearing part, the side fixing ears are arranged corresponding to the fixing screw holes, and the fixing bolt group is fixed in the side fixing ears and the fixing screw holes.

[0007] On the basis of the above technical scheme, the limiting mechanism is composed of a mechanism housing, a machine-end connecting piece, a positioning structure, a pressure sheet ring plate, a ring sheet bearing, an internal pressure spring, a pressure regulating piece, and an outer-end output shaft. The machine-end connecting piece, the positioning structure, the pressure sheet ring plate, the ring sheet bearing, the internal pressure spring, the pressure regulating piece, and the outer-end output shaft are all arranged in the mechanism housing, and the outer-end output shaft passes through the side end of the mechanism housing. The side surface of the positioning structure is tightly attached to the side surface of the machine-end connecting piece, and the pressure sheet ring plate is tightly attached to the other side surface of the positioning structure. The ring sheet bearing and the pressure sheet ring plate are arranged in parallel, and one side end of the internal pressure spring is fixed to the side surface of the ring sheet bearing. The other end of the internal pressure spring is fixed to the side of the pressure regulating part, and the outer end output shaft passes through the center of the pressure regulating part, the internal pressure spring, the annular bearing, and the pressure ring plate to be connected with the positioning structure, and the outer end output shaft does not contact the pressure regulating part, the internal pressure spring, the annular bearing, and the pressure ring plate. The outer side wall of the pressure regulating part is threadedly connected to the inner side wall of the mechanism housing, and the side end of the pressure regulating part passes through the side wall of the mechanism housing. The machine-end connecting part, the positioning structure, the pressure ring plate, the annular bearing, and the outer end output shaft can all rotate freely in the mechanism housing, and the internal pressure spring and the pressure regulating part can rotate at a small angle in the mechanism housing.

[0008] On the basis of the above technical solution, the mechanism housing is composed of a rear end housing member, a front end housing member, a front end bearing, and a rear end bearing. The front end housing member and the rear end housing member are fixed by fixing bolts. The front end bearing is fixed to the inner front end of the front end housing member, and the rear end bearing is fixed to the inner rear end of the rear end housing member. A bearing fixing arc groove is provided on the outer side of the rear end of the rear end housing member, and the pancake end connecting bearing member is fixed in the bearing fixing arc groove. The machine end connecting member is connected in the rear end bearing, and the outer end output shaft member is connected in the front end bearing. The inner side wall of the side end of the rear end housing member is provided with a side wall adjustment thread, and the side edge of the pressure adjusting member is connected to the side wall adjustment thread. A machine-end fixed embedded groove is provided on the side end of the rear end housing component, and the positioning convex point sleeve is embedded in the machine-end fixed embedded groove. Symmetrical adjustment grooves are provided on the upper and lower sides of the side end of the front end housing component, and the side ends of the pressure adjustment component are arranged in the symmetrical adjustment grooves. A fixed expansion plate is provided at the docking position of the front end housing component and the rear end housing component, and a retaining through hole is provided on the fixed expansion plate. The fixing bolt is fixed on the retaining through hole on the fixed expansion plate. The outer-end output shaft component is arranged in the front end housing component, and the outer-end output shaft component passes through the side end of the front end housing component. The machine-end connecting component, positioning structure, pressure ring plate, ring bearing, and internal pressure spring are arranged in the rear end housing component.

[0009] On the basis of the above technical scheme, the machine end connecting piece is composed of a connecting sleeve and a shaft end plate, the shaft end plate is arranged at the side end of the connecting sleeve, and the side of the shaft end plate is provided with several groups of inner arc tooth grooves, and the connecting sleeve is provided with a machine shaft spline groove, the connecting sleeve is connected to the rear end bearing, and the motor spline output shaft is connected to the machine shaft spline groove in the connecting sleeve, and the positioning structure is composed of a steel ball positioning plate and positioning steel balls, and the steel ball positioning plate is provided with several groups of positioning perforations, and several groups of positioning perforations are provided at equal circumferential angles on the steel ball positioning plate, and the two positioning steel balls are A group, the two positioning steel balls are arranged in parallel, and several groups of positioning steel balls are respectively arranged in several groups of positioning through holes, the parallel length of the two positioning steel balls is greater than the thickness of the steel ball positioning plate, the steel ball positioning plate and the shaft end plate are arranged in parallel, and the several groups of positioning through holes are respectively arranged corresponding to several groups of inner arc tooth grooves, the positioning steel balls on one side pass through the positioning through holes and are embedded in the inner arc tooth grooves, the pressing ring plate is tightly attached to the side of the positioning steel balls on the other side, a docking corrugated hole is opened in the center of the steel ball positioning plate, and the inner end of the outer end output shaft is connected to the docking corrugated hole in the center of the steel ball positioning plate.

[0010] On the basis of the above technical scheme, the pressure adjustment member is composed of an adjustment ring and a side convex contact adjustment handle. The side convex contact adjustment handle is provided with two groups. The two groups of side convex contact adjustment handles are symmetrically arranged on the outer side surface of the adjustment ring. The outer side surface of the adjustment ring is provided with a ring side adjustment thread, and the ring side adjustment thread is connected to the side wall adjustment thread. The side convex contact adjustment handle is arranged in a symmetrical adjustment groove, and the side convex contact adjustment handle can move in a small range in the symmetrical adjustment groove.

[0011] On the basis of the above technical scheme, the outer output shaft is composed of an inner connecting corrugated shaft, a retaining shaft plate, a side panel type bearing, and an outer output shaft. The inner connecting corrugated shaft and the outer output shaft are symmetrically arranged at the centers of the two side surfaces of the retaining shaft plate. The side panel type bearing is sleeved on the outside of the outer output shaft, and the side panel type bearing is tightly attached to the outer side surface of the retaining shaft plate. The inner connecting corrugated shaft, the retaining shaft plate, and the outer output shaft are fixed as a whole. The inner connecting corrugated shaft is connected to the docking corrugated hole in the center of the steel ball positioning plate, and the outer output shaft is connected to the front end bearing.

[0012] Compared with the prior art, the present invention has the following advantages: the present invention optimizes the design of the motor limit head, changes the function of the reducer driven by the traditional motor, and designs a limit head that can adjust the torque of the motor output shaft. The structure can reduce the damage caused by the strong torque stress of the motor, protect the internal structure of the motor, effectively reduce the motor failure rate, and reduce the damage to the transmission facilities driven by the motor, and is suitable for popularization and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a diagram of the overall appearance of the present invention.

[0014] Figure 2 It is a schematic diagram of the separation of the limit head body and the motor body of the present invention.

[0015] Figure 3 It is a detailed schematic diagram of the motor output shaft assembly of the present invention.

[0016] Figure 4 It is an overall schematic diagram of the limit head body of the present invention.

[0017] Figure 5 It is a schematic diagram of disassembling the limit head body of the present invention.

[0018] Figure 6 It is a schematic diagram of the rear side view of the limit head body of the present invention.

[0019] Figure 7 It is a half-section schematic diagram of the rear side view of the limit head body of the present invention.

[0020] Figure 8 It is a half-section schematic diagram of the rear side view of the limit head body of the present invention.

[0021] Fig. 9 It is a half-section schematic diagram of the rear side view of the housing of the mechanism of the present invention.

[0022] Fig.10 It is a schematic diagram of the disassembly of the rear side view of the housing of the mechanism of the present invention.

[0023] Fig.11 It is a half-section detail schematic diagram of the machine end connector of the present invention.

[0024] Fig.12 It is a half-section schematic diagram of the positioning structure of the present invention.

[0025] Fig.13 It is a half-section schematic diagram of the pressure regulating member of the present invention.

[0026] Fig.14 It is a half-section schematic diagram of the outer end output shaft of the present invention.

[0027] In the figure: motor body 1, limit head body 2, motor fixing bracket 3, motor output shaft group 4, motor power connection box 5, fixing bolt group 6;

[0028] Motor spline output shaft 4-1, positioning convex point sleeve 4-2, fixing screw hole 4-3, limit mechanism 2-1, machine end fixing part 2-2, pancake end connecting bearing part 2-3;

[0029] A fixing ring 22-1, a side fixing ear 22-2, and an anti-slip groove 22-3;

[0030] Mechanism housing 21-1, machine end connecting piece 21-2, positioning structure 21-3, pressure plate ring plate 21-4, ring plate bearing 21-5, inner pressure spring 21-6, pressure regulating piece 21-7, outer end output shaft 21-8;

[0031] Rear end housing part 211-1, front end housing part 211-2, front end bearing 211-3, rear end bearing 211-4, fixing bolt 211-5, bearing fixing arc groove 211-6, side wall adjustment thread 211-7, machine end fixing embedded groove 211-8, symmetrical adjustment groove 211-9, fixed extension plate 211-10, retention through hole 211-11;

[0032] Connecting shaft sleeve 212-1, shaft end plate 212-2, inner arc tooth groove 212-3, and shaft spline groove 212-4;

[0033] Steel ball positioning plate 213-1, positioning steel ball 213-2, positioning perforation 213-3, docking corrugated hole 213-4;

[0034] Adjustment ring 217-1, side convex adjustment handle 217-2, ring side adjustment thread 217-3;

[0035] The inner end is connected to the corrugated shaft 218-1, the fixed shaft plate 218-2, the side plate type bearing 218-3, and the outer end output shaft 218-4. Implementation

[0036] The present invention is further described in detail below in conjunction with the accompanying drawings and specific implementations.

[0037] A motor with a limit protection function comprises a motor body 1, a limit head body 2, a motor fixing frame 3, a motor output shaft group 4, and a motor power connection box 5, wherein the motor fixing frame 3 is fixed to both side ends and the bottom side of the motor body 1, the motor output shaft group 4 is arranged at the front side end of the motor body 1, the limit head body 2 is fixed to the front side end of the motor body 1 by a fixing bolt group 6, and the motor output shaft group 4 is connected to the inner and rear end of the limit head body 2, the motor power connection box 5 is fixed to the outer side surface of the motor body 1, and the motor power connection box 5 is connected to the motor body 1.

[0038] The motor output shaft group 4 is composed of a motor spline output shaft 4-1 and a positioning convex sleeve 4-2. The motor spline output shaft 4-1 passes through the front side of the motor fixing frame 3 to connect to the motor body 1. The positioning convex sleeve 4-2 is arranged on the outside of the motor spline output shaft 4-1, and the positioning convex sleeve 4-2 is fixed to the front side of the motor fixing frame 3. The front side of the motor fixing frame 3 is provided with multiple groups of fixing screw holes 4-3, and the multiple groups of fixing screw holes 4-3 are arranged at equal circular angles on the outside of the positioning convex sleeve 4-2. The motor spline output shaft 4-1 is connected to the inner rear side of the limit head body 2, and the positioning convex sleeve 4-2 is embedded in the rear side end of the limit head body 2. The rear side end of the limit head body 2 is fixed to the fixing screw hole 4-3 on the motor fixing frame 3 by a fixing bolt group 6.

[0039] The limit head body 2 is composed of a limit mechanism 2-1, a machine end fixing part 2-2, and a pancake end connecting bearing part 2-3. The inner side of the pancake end connecting bearing part 2-3 is fixed to the outer side of the rear end of the limit mechanism 2-1. The machine end fixing part 2-2 is fixed to the outer side of the pancake end connecting bearing part 2-3. The machine end fixing part 2-2 is composed of a fixing ring sleeve 22-1 and a side fixing ear 22-2. The side fixing ear 22-2 is provided with multiple groups. The multiple groups of side fixing ears 22-2 are arranged at equal circumferential angles on the outer side of the fixing ring sleeve 22-1, and the fixing The ring sleeve 22-1 is integrally formed with the side fixing ear 22-2, and an anti-slip groove 22-3 is provided on the inner side of the rear side of the fixing ring sleeve 22-1. The outer end of the cake-end connecting bearing member 2-3 is fixedly embedded in the anti-slip groove 22-3. The machine-end fixing member 2-2 can rotate on the outside of the cake-end connecting bearing member 2-3, and the limiting mechanism 2-1 can rotate on the inside of the cake-end connecting bearing member 2-3. The side fixing ear 22-2 is correspondingly arranged with the fixing screw hole 4-3, and the fixing bolt group 6 is fixed in the side fixing ear 22-2 and the fixing screw hole 4-3.

[0040] The limiting mechanism 2-1 is composed of a mechanism housing 21-1, a machine end connection piece 21-2, a positioning structure 21-3, a pressure ring plate 21-4, a ring bearing 21-5, an inner pressure spring 21-6, a pressure regulating piece 21-7, and an outer end output shaft 21-8. -8 are arranged in the mechanism housing 21-1, and the outer end output shaft 21-8 passes through the side end of the mechanism housing 21-1, the side of the positioning structure 21-3 is closely attached to the side of the machine end connecting member 21-2, the pressing ring plate 21-4 is closely attached to the other side of the positioning structure 21-3, the annular bearing 21-5 and the pressing ring plate 21-4 are arranged in parallel, one side end of the inner pressure spring 21-6 is fixed to the side of the annular bearing 21-5, and the inner pressure spring The other end of 21-6 is fixed to the side of the pressure regulating member 21-7, and the outer end output shaft member 21-8 passes through the center of the pressure regulating member 21-7, the inner pressure spring 21-6, the annular bearing 21-5, and the pressing ring plate 21-4 and is connected to the positioning structure 21-3, and the outer end output shaft member 21-8 is not in contact with the pressure regulating member 21-7, the inner pressure spring 21-6, the annular bearing 21-5, and the pressing ring plate 21-4. The outer wall of 7 is threadedly connected to the inner wall of the mechanism housing 21-1, and the side end of the pressure regulating member 21-7 passes through the side wall of the mechanism housing 21-1, and the machine-end connecting member 21-2, the positioning structure 21-3, the pressure ring plate 21-4, the ring bearing 21-5, and the outer end output shaft 21-8 can all rotate freely in the mechanism housing 21-1, and the internal pressure spring 21-6 and the pressure regulating member 21-7 can rotate at a small angle in the mechanism housing 21-1.

[0041] The mechanism housing 21-1 is composed of a rear end housing member 211-1, a front end housing member 211-2, a front end bearing 211-3, and a rear end bearing 211-4. The front end housing member 211-2 and the rear end housing member 211-1 are fixed by fixing bolts 211-5. The front end bearing 211-3 is fixed to the inner front end of the front end housing member 211-2, and the rear end bearing 211-4 is fixed to the inner rear end of the rear end housing member 211-1. The rear end outer side of the rear end housing member 211-1 is provided with a There is a bearing fixing arc groove 211-6, the pancake end connecting bearing member 2-3 is fixed in the bearing fixing arc groove 211-6, the machine end connecting member 21-2 is connected to the rear end bearing 211-4, the outer end output shaft member 21-8 is connected to the front end bearing 211-3, the side end inner wall of the rear end housing member 211-1 is provided with a side wall adjusting thread 211-7, the side edge of the pressure adjusting member 21-7 is connected to the side wall adjusting thread 211-7, the rear end housing member 211-1 The side end is provided with an organic end fixed embedded groove 211-8, the positioning convex point sleeve 4-2 is embedded in the machine end fixed embedded groove 211-8, the upper and lower sides of the side end of the front end shell member 211-2 are provided with symmetrical adjustment grooves 211-9, the side end of the pressure adjustment member 21-7 is arranged in the symmetrical adjustment groove 211-9, and the docking position of the front end shell member 211-2 and the rear end shell member 211-1 is provided with a fixed expansion plate 211-10, and the fixed expansion plate 211-10 is provided with a fixed expansion plate 211-10. A retaining through hole 211-11 is opened, and the fixing bolt 211-5 is fixed on the retaining through hole 211-11 on the fixed extension plate 211-10. The outer output shaft 21-8 is arranged in the front end outer shell 211-2, and the outer output shaft 21-8 passes through the side end of the front end outer shell 211-2. The machine-end connecting part 21-2, the positioning structure 21-3, the pressure ring plate 21-4, the ring bearing 21-5, and the internal pressure spring 21-6 are arranged in the rear end outer shell 211-1.

[0042] The machine end connecting piece 21-2 is composed of a connecting sleeve 212-1 and an end plate 212-2. The end plate 212-2 is arranged at the side end of the connecting sleeve 212-1. The side of the end plate 212-2 is provided with a plurality of groups of inner arc tooth grooves 212-3. The connecting sleeve 212-1 is provided with an organic shaft spline groove 212-4. The connecting sleeve 212-1 is connected to the rear end bearing 211-4. The motor spline output shaft 4-1 is connected to the machine shaft spline groove 212-4 in the connecting sleeve 212-1. The positioning structure 21-3 is composed of a steel ball positioning plate 213-1 and positioning steel balls 213-2. The steel ball positioning plate 213-1 is provided with a plurality of groups of positioning through holes 213-3. The plurality of groups of positioning through holes 213-3 are provided at equal circumferential angles on the steel ball positioning plate 213-1. The two positioning steel balls 213-2 As a group, the two positioning steel balls 213-2 are arranged in parallel, and several groups of positioning steel balls 213-2 are respectively arranged in several groups of positioning through holes 213-3. The parallel length of the two positioning steel balls 213-2 is greater than the thickness of the steel ball positioning plate 213-1. The steel ball positioning plate 213-1 and the shaft end plate 212-2 are arranged in parallel, and the several groups of positioning through holes 213-3 are respectively arranged corresponding to several groups of inner arc tooth grooves 212-3. The positioning steel ball 213-2 on one side passes through the positioning through holes 213-3 and is embedded in the inner arc tooth groove 212-3. The pressing ring plate 21-4 is tightly attached to the side of the positioning steel ball 213-2 on the other side. A docking corrugated hole 213-4 is opened in the center of the steel ball positioning plate 213-1, and the inner end of the outer end output shaft 21-8 is connected to the docking corrugated hole 213-4 in the center of the steel ball positioning plate 213-1.

[0043] The pressure adjustment member 21-7 is composed of an adjustment ring 217-1 and a side convex adjustment handle 217-2. The side convex adjustment handle 217-2 is provided with two groups. The two groups of side convex adjustment handles 217-2 are symmetrically arranged on the outer side of the adjustment ring 217-1. The outer side of the adjustment ring 217-1 is provided with a ring side adjustment thread 217-3. The ring side adjustment thread 217-3 is connected to the side wall adjustment thread 211-7. The side convex adjustment handle 217-2 is arranged in a symmetrical adjustment groove, and the side convex adjustment handle 217-2 can move in a small range in the symmetrical adjustment groove 211-9.

[0044] The outer output shaft 21-8 is composed of an inner connecting corrugated shaft 218-1, a fixed shaft plate 218-2, a side panel bearing 218-3, and an outer output shaft 218-4. The inner connecting corrugated shaft 218-1 and the outer output shaft 218-4 are symmetrically arranged at the centers of the two side surfaces of the fixed shaft plate 218-2. The side panel bearing 218-3 is sleeved on the outer side of the outer output shaft 218-4, and the side panel bearing 218-3 is tightly attached to the outer side surface of the fixed shaft plate 218-2. The inner connecting corrugated shaft 218-1, the fixed shaft plate 218-2, and the outer output shaft 218-4 are fixed as a whole. The inner connecting corrugated shaft 218-1 is connected to the docking corrugated hole 213-4 in the center of the steel ball positioning plate 213-1, and the outer output shaft 218-4 is connected to the front end bearing 211-3.

[0045] Working principle of the present invention: The working characteristic of this structure is that the output torque of the motor can be controlled to be kept within a safe range through regulation, thereby preventing the torque of the motor from causing damage to the associated transmission facilities and the motor itself.

[0046] The limit head body 2 is installed and connected to the motor output shaft group 4. When the motor spline output shaft 4-1 of the motor is output, the torque output by the motor body 1 can be controlled within a range that is not enough to damage the motor body 1 through the protection of the limit head body 2. The structure controls the output torque range by adjusting the position of the pressure adjustment member 21-7. When the torque range output by the motor body is greater than the range of the limit head body 2, the motor body 1 idles, and the transmission facility connected to the limit head body 2 will not continue to operate, thereby protecting the transmission facility while also protecting the motor body 1.

[0047] The connection is made according to the conditions of the specific implementation method, and the position of the pressure regulating member 21-7 is adjusted. When the relative position of the pressure regulating member 21-7 is closer to the outer output shaft 21-8, the torque range that can be limited by the limit head body 2 is smaller. The principle is that when the pressure regulating member 21-7 is close to the outer output shaft 21-8, the force applied by the pressure regulating member 21-7 to the inner pressure spring 21-6 is smaller, which causes the elastic length of the inner pressure spring 21-6 to be compressed and lengthened, and the pressure ring plate 21-4 pressed on the side of the positioning steel ball 213-2 has a larger space to be lifted up by the positioning steel ball 213-2. When the motor body 1 continues to output a larger torque, and the outer output shaft 21-8 at the other end has a larger resistance, the motor body 1 drives the machine-end connecting member 21-2 to continue to rotate, and the machine-end connecting member 21-2 and the outer output shaft 21-8 are connected. 8 has a certain speed difference, and the positioning steel ball 213-2 embedded in the inner arc tooth groove 212-3 on the side of the machine-end connecting piece 21-2 will be lifted up, so that the positioning steel ball 213-2 will be disengaged from the inner arc tooth groove 212-3. During the lifting process, the pressure ring plate 21-4 compresses the internal pressure spring 21-6 to form a travel space. After lifting, the machine-end connecting piece 21-2 increases its speed under the drive of the motor body 1, and the speed of the outer output shaft 21-8 decreases due to the resistance. At this time, the motor body 1 idles without driving the limit head body 2 and the transmission facilities connected to the limit head body 2 to operate.

[0048] On the contrary, when the position of the pressure adjusting component 21-7 is adjusted, when the relative position of the pressure adjusting component 21-7 is farther away from the outer end output shaft 21-8, the torque range that can be limited by the limit head body 2 is larger, the internal pressure of the pressure adjusting component 21-7 on the internal pressure spring 21-6 is larger, and the force applied by the pressure ring plate 21-4 to press the positioning steel ball 213-2 is larger, and it is not easy to cause the positioning steel ball 213-2 to fall out from the inner arc tooth groove 212-3, so the transmitted torque is also larger.

[0049] In the limit head body 2, the use of the pancake end connecting bearing member 2-3 makes it easier to fix the machine end fixing member 2-2 on the motor body 1 and the motor fixing frame 3, and facilitates the adjustment of the position and angle;

[0050] The rear end bearing 211-4 in the rear end housing member 211-1 and the front end bearing 211-3 in the front end housing member 211-2 enable the machine end connecting member 21-2 and the outer end output shaft member 21-8 to have rotation capabilities respectively, so that when the machine end connecting member 21-2 and the outer end output shaft member 21-8 rotate at different speeds, they have different rotation capabilities, preventing the reverse torque caused by the torque or resistance of the motor body 1 from damaging the limit head body 2;

[0051] The reason why the two positioning steel balls 213-2 in the positioning structure 21-3 need to be larger than the width of the steel ball positioning plate 213-1 is to ensure that the positioning steel balls 213-2 on one side are embedded in the inner arc tooth groove 212-3, while the positioning steel balls 213-2 on the other side can also ensure contact with the pressing ring plate 21-4;

[0052] In the pressure regulating member 21-7, a ring side adjusting thread 217-3 is arranged on the side, firstly, to ensure that the pressure regulating member 21-7 has sufficient supporting force for the internal pressure spring 21-6, and secondly, it can be adjusted, and the adjustment range is a small angle range. The requirement for the internal pressure spring 21-6 is that when it is compressed to a fixed length, the force applied to the pressure sheet ring plate 21-4 is proportional to the progressive relationship of the rotation of the pressure regulating member 21-7, and when the adjusting ring 217-1 is farthest from the outer output shaft 21-8, the pressure applied by the internal pressure spring 21-6 is at the critical point where the positioning steel ball 213-2 is separated from the inner arc tooth groove 212-3.

[0053] The above is a preferred embodiment of the present invention. For ordinary technicians in this field, according to the teachings of the present invention, without departing from the principles and spirit of the present invention, changes, modifications, substitutions and variations made to the implementation methods are still within the scope of protection of the present invention.

Claims

1. A motor with limit protection function, It is characterized in that The motor comprises a motor body (1), a limit head body (2), a motor fixing frame (3), a motor output shaft group (4), and a motor connection box (5), wherein the motor fixing frame (3) is fixed to both side ends and the bottom side of the motor body (1), the motor output shaft group (4) is arranged at the front side end of the motor body (1), the limit head body (2) is fixed to the front side end of the motor body (1) by a fixing bolt group (6), and the motor output shaft group (4) is connected to the inner rear end of the limit head body (2), the motor connection box (5) is fixed to the outer side of the motor body (1), and the motor connection box (5) is connected to the motor body (1), and the motor output shaft group (4) is composed of a motor spline output shaft (4-1), a positioning cam (6) and a positioning cam (6). The motor spline output shaft (4-1) is connected to the motor body (1) through the front side of the motor fixing frame (3), the positioning convex point sleeve (4-2) is arranged on the outside of the motor spline output shaft (4-1), and the positioning convex point sleeve (4-2) is fixed to the front side of the motor fixing frame (3), the front side of the motor fixing frame (3) is provided with a plurality of groups of fixing screw holes (4-3), and the plurality of groups of fixing screw holes (4-3) are arranged at equal circumferential angles on the outside of the positioning convex point sleeve (4-2), the motor spline output shaft (4-1) is connected to the inner rear side of the limit head body (2), and the positioning convex point sleeve (4-2) is embedded in the rear end of the limit head body (2), and the limit The rear side end of the head body (2) is fixed to the fixing screw hole (4-3) on the motor fixing frame (3) through a fixing bolt group (6); the limit head body (2) is composed of a limit mechanism (2-1), a machine end fixing member (2-2), and a pancake end connecting bearing member (2-3); the inner side of the pancake end connecting bearing member (2-3) is fixed to the outer side of the rear end of the limit mechanism (2-1); the machine end fixing member (2-2) is fixed to the outer side of the pancake end connecting bearing member (2-3); the machine end fixing member (2-2) is composed of a fixing ring sleeve (22-1) and a side fixing ear (22-2); the side fixing ear (22-2) is provided with a plurality of groups, and the plurality of groups of side fixing ears (22-2) are arranged at equal circumferential angles. The fixing ring sleeve (22-1) is arranged on the outer side of the fixing ring sleeve (22-1), and the fixing ring sleeve (22-1) and the side fixing ear (22-2) are integrally formed. The inner side of the rear side of the fixing ring sleeve (22-1) is provided with an anti-slip groove (22-3). The outer side end of the cake end connecting bearing member (2-3) is fixedly embedded in the anti-slip groove (22-3). The machine end fixing member (2-2) can rotate outside the cake end connecting bearing member (2-3), and the limiting mechanism (2-1) can rotate inside the cake end connecting bearing member (2-3). The side fixing ear (22-2) and the fixing screw hole (4-3) are arranged correspondingly. The fixing bolt group (6) is fixed in the side fixing ear (22-2) and the fixing screw hole (4-3).The limiting mechanism (2-1) is composed of a mechanism housing (21-1), a machine end connecting piece (21-2), a positioning structure (21-3), a pressure plate ring plate (21-4), a ring bearing (21-5), an internal pressure spring (21-6), a pressure regulating piece (21-7), and an outer end output shaft (21-8); the machine end connecting piece (21-2), the positioning structure (21-3), the pressure plate ring plate (21-4), the ring bearing (21-5), the internal pressure spring (21-6), the pressure regulating piece (21-7), and the outer end output shaft (21-8) are all arranged in the mechanism housing (21-1), and the outer end output shaft (21-8) passes through the side end of the mechanism housing (21-1), and the side of the positioning structure (21-3) is tightly connected to the outer end output shaft (21-8). The outer end output shaft (21-8) is respectively passed through the center of the pressure regulating member (21-7), the inner pressure spring (21-6), the annular bearing (21-5), and the pressure plate (21-4) and is connected to the positioning structure (21-3); the outer end output shaft (21-8) is connected to the pressure regulating member (21-7), the inner pressure spring (21-6), the annular bearing (21-5), and the pressure plate (21-4) and is connected to the positioning structure (21-3); and the outer end output shaft (21-8) is connected to the pressure regulating member (21-7), the inner pressure spring (21-6), the annular bearing (21-5), and the pressure plate (21-4) and is connected to the positioning structure (21-3); and the outer end output shaft (21-8) is connected to the pressure regulating member (21-7), the inner pressure spring (21-6), the annular bearing (21-5), and the pressure plate (21-4) and is connected to the positioning structure (21-3). The spring (21-6), the annular bearing (21-5), and the pressure plate (21-4) are not in contact with each other. The outer wall of the pressure regulating member (21-7) is threadedly connected to the inner wall of the mechanism housing (21-1), and the side end of the pressure regulating member (21-7) passes through the side wall of the mechanism housing (21-1). The machine end connecting member (21-2), the positioning structure (21-3), the pressure plate (21-4), the annular bearing (21-5), and the outer end output shaft member (21-8) can all rotate freely in the mechanism housing (21-1). The inner pressure spring (21-6) and the pressure regulating member (21-7) can rotate at a small angle in the mechanism housing (21-1). The mechanism housing (21-1) is connected to the rear end housing member (211-1) by the rear end housing member (211-1). ), a front end housing member (211-2), a front end bearing (211-3), and a rear end bearing (211-4), wherein the front end housing member (211-2) and the rear end housing member (211-1) are fixed by fixing bolts (211-5), the front end bearing (211-3) is fixed to the inner front end of the front end housing member (211-2), the rear end bearing (211-4) is fixed to the inner rear end of the rear end housing member (211-1), a bearing fixing arc groove (211-6) is provided on the outer side of the rear end of the rear end housing member (211-1), the pancake end connecting bearing member (2-3) is fixed in the bearing fixing arc groove (211-6), and the machine end connecting member (21-2) is connected in the rear end bearing (211-4),The outer end output shaft member (21-8) is connected to the front end bearing (211-3); the inner side wall of the side end of the rear end housing member (211-1) is provided with a side wall adjustment thread (211-7); the side edge of the pressure adjustment member (21-7) is connected to the side wall adjustment thread (211-7); the side end of the rear end housing member (211-1) is provided with an organic end fixed embedded groove (211-8); the positioning convex point sleeve (4-2) is embedded in the organic end fixed embedded groove (211-8); the upper and lower sides of the side end of the front end housing member (211-2) are provided with symmetrical adjustment grooves (211-9); the side edge of the pressure adjustment member (21-7) is arranged in the symmetrical adjustment groove (211-9); the front end housing member ( A fixed outward expansion plate (211-10) is provided at a docking position between the front end housing member (211-2) and the rear end housing member (211-1); a fixing through hole (211-11) is provided on the fixed outward expansion plate (211-10); the fixing bolt (211-5) is fixed on the fixing through hole (211-11) on the fixed outward expansion plate (211-10); the outer end output shaft member (21-8) is provided in the front end housing member (211-2); and the outer end output shaft member (21-8) passes through the side end of the front end housing member (211-2); the machine end connecting member (21-2), the positioning structure (21-3), the pressure plate ring plate (21-4), the ring plate bearing (21-5), and the internal pressure spring (21-6) are provided in the rear end housing member (211- 1), the machine end connecting piece (21-2) is composed of a connecting sleeve (212-1) and a shaft end plate (212-2), the shaft end plate (212-2) is arranged at the side end of the connecting sleeve (212-1), the side of the shaft end plate (212-2) is provided with a plurality of groups of inner arc tooth grooves (212-3), the connecting sleeve (212-1) is provided with a machine shaft spline groove (212-4), the connecting sleeve (212-1) is connected to the rear end bearing (211-4), the motor spline output shaft (4-1) is connected to the machine shaft spline groove (212-4) in the connecting sleeve (212-1), the positioning structure (21-3) is composed of a steel ball positioning plate (213-1) and a positioning steel ball (213-2), The steel ball positioning plate (213-1) is provided with a plurality of groups of positioning through holes (213-3), and the plurality of groups of positioning through holes (213-3) are provided at equal circumferential angles on the steel ball positioning plate (213-1). Two positioning steel balls (213-2) form a group, and the two positioning steel balls (213-2) are arranged in parallel. The plurality of groups of positioning steel balls (213-2) are respectively arranged in the plurality of groups of positioning through holes (213-3). The parallel length of the two positioning steel balls (213-2) is greater than the thickness of the steel ball positioning plate (213-1). The steel ball positioning plate (213-1) is arranged in parallel with the shaft end plate (212-2), and the plurality of groups of positioning through holes (213-3) are respectively arranged corresponding to the plurality of groups of inner arc tooth grooves (212-3).The positioning steel ball (213-2) on one side passes through the positioning through hole (213-3) and is embedded in the inner arc tooth groove (212-3); the pressing ring plate (21-4) is tightly attached to the side surface of the positioning steel ball (213-2) on the other side; a docking corrugated hole (213-4) is provided at the center of the steel ball positioning plate (213-1); the inner side end of the outer end output shaft component (21-8) is connected to the docking corrugated hole (213-4) at the center of the steel ball positioning plate (213-1); the outer end output shaft component (21-8) is composed of an inner end connecting corrugated shaft (218-1), a retaining shaft plate (218-2), a side panel bearing (218-3), and an outer end output shaft (218-4); the inner end The connecting corrugated shaft (218-1) and the outer output shaft (218-4) are symmetrically arranged at the center of the two side surfaces of the fixed shaft plate (218-2), the side panel bearing (218-3) is sleeved on the outer side of the outer output shaft (218-4), and the side panel bearing (218-3) is tightly attached to the outer side surface of the fixed shaft plate (218-2), the inner end connecting corrugated shaft (218-1), the fixed shaft plate (218-2), and the outer output shaft (218-4) are fixed as a whole, the inner end connecting corrugated shaft (218-1) is connected to the docking corrugated hole (213-4) in the center of the steel ball positioning plate (213-1), and the outer output shaft (218-4) is connected to the front end bearing (211-3).

2. A motor with a limit protection function according to claim 1, It is characterized in that The pressure adjustment member (21-7) is composed of an adjustment ring (217-1) and a side convex adjustment handle (217-2). The side convex adjustment handle (217-2) is provided with two groups. The two groups of side convex adjustment handles (217-2) are symmetrically arranged on the outer side of the adjustment ring (217-1). The outer side of the adjustment ring (217-1) is provided with a ring side adjustment thread (217-3). The ring side adjustment thread (217-3) is connected to the side wall adjustment thread (211-7). The side convex adjustment handle (217-2) is arranged in a symmetrical adjustment groove, and the side convex adjustment handle (217-2) can move within a small range in the symmetrical adjustment groove (211-9).

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