Backlash-free direct-drive electric linear actuator and its manufacturing method

Abstract

The present application relates to the field of electric linear actuators, and discloses a gapless direct-drive electric linear actuator and a manufacturing method thereof, wherein the gapless direct-drive electric linear actuator comprises a direct-drive electric linear actuator body, a support base, an auxiliary motor, a fixed bin, a lubrication mechanism, a first connecting capillary, a second connecting capillary, an oil storage mechanism, a shock absorbing mechanism, and a mounting seat mechanism, wherein the bottom end of the direct-drive electric linear actuator body is fixedly connected to the upper surface of the fixed bin, the auxiliary motor is fixedly mounted on the upper surface of the fixed bin, the output shaft end of the auxiliary motor extends to the bottom surface of the fixed bin, the side of the fixed bin is fixedly connected to the side wall of the support base, and the top of the fixed bin extends to the junction of the inner tube and the outer tube of the direct-drive electric linear actuator body. The present application is beneficial in that it provides a direct-drive electric linear actuator that is easy to install and has a shock absorbing and lubricating effect.

Description

Technical Field

[0001] The present application relates to the field of electric push rods, in particular to a gapless direct-drive electric push rod. Background Art

[0002] Electric push rod, also known as linear drive, is a new type of linear actuator mainly composed of motor push rod and control device, which can be considered as an extension of rotary motor in structure. It has the characteristics of novel and exquisite design, small size, high precision, complete synchronization, good self-locking performance, hygiene, and direct motor drive. It is suitable for electric sofas, electric booth lifting rods, industrial electric lifting systems, camera racks, projectors, wedding systems, electric turning beds, electric nursing beds, etc.

[0003] Traditional electric linear actuators are prone to jamming, friction, and noise due to rust and other reasons after long-term use, and are inconvenient to disassemble and maintain. Summary of the invention

[0004] A gapless direct-drive electric push rod comprises a direct-drive electric push rod body, a supporting base, an auxiliary motor, a fixing bin, a lubrication mechanism, an oil storage mechanism, a shock absorbing mechanism and a mounting seat mechanism.

[0005] The bottom end of the direct-drive electric push rod body is fixedly connected to the upper surface of the fixed bin, the auxiliary motor is fixedly installed on the upper surface of the fixed bin, the output shaft end of the auxiliary motor extends to the bottom surface of the fixed bin, the side of the fixed bin is fixedly connected to the side wall of the support base, the top of the fixed bin extends to the junction of the inner tube and the outer tube of the direct-drive electric push rod body, a lubrication mechanism is installed at the junction of the inner tube and the outer tube of the direct-drive electric push rod body, the lower surface of the fixed bin is fixedly connected to the upper surface of the oil storage mechanism, the shock absorbing mechanism is installed on the side wall of the fixed bin, and the mounting seat mechanism is installed on the bottom surface of the shock absorbing mechanism.

[0006] Furthermore, the lubrication mechanism includes an annular fixing block, an annular inner cavity, balls and a rubber gasket. An annular inner cavity is opened inside the annular fixing block, a rubber gasket is fixedly arranged on the inner wall of the annular fixing block, a plurality of spherical cavities are opened on the inner wall of the annular fixing block, balls are rotatably arranged in the spherical cavity of the annular fixing block, there are a plurality of balls, a plurality of the balls are rotatably arranged in a plurality of the spherical cavities, a plurality of the balls are equidistantly arranged, and the inner cavity of the annular inner cavity is filled with lubricating oil.

[0007] Furthermore, the oil storage mechanism includes a fixed shell, a slider, a threaded rod, a connecting sleeve rod, a connecting rod, a connecting spring, a piston, a bevel gear A, a rotating member and a partition plate. The partition plate is fixedly arranged in the inner cavity of the fixed shell, a piston is slidably arranged in the left inner cavity of the fixed shell, the left inner cavity of the fixed shell is filled with lubricating oil, a slider is slidably arranged in the right inner cavity of the fixed shell, a threaded rod is rotatably connected between the partition plate and the inner wall of the fixed shell, the threaded rod passes through the slider and is threadedly matched with the slider, and a fixed sleeve on the threaded rod A bevel gear A is provided, and a rotating member is rotatably connected to the upper wall of the fixed shell, and a bevel gear B is fixedly connected to one end of the rotating member, and the bevel gear B and the bevel gear A are meshed with each other. A connecting sleeve rod is fixedly connected to one side wall of the slider, and one end of the connecting sleeve rod penetrates the partition plate and extends to the left inner cavity of the fixed shell. The connecting sleeve rod is slidably connected to the connecting rod, one end of the connecting spring is fixedly connected to one end of the connecting rod, and the other end of the connecting spring is fixedly connected to the inner wall of the connecting sleeve rod.

[0008] Furthermore, the output shaft end of the fixed bin is fixedly connected to one end of the rotating member.

[0009] Furthermore, the inner cavity of the fixed bin is filled with lubricating oil, a first connecting capillary is fixedly arranged at one end of the inner cavity of the fixed bin, one end of the first connecting capillary extends into the annular inner cavity of the lubrication mechanism, and a second connecting capillary is arranged at the other end of the inner cavity of the fixed bin, one end of the second connecting capillary extends into the left inner cavity of the fixed shell.

[0010] Furthermore, the shock absorbing mechanism includes a guide block, a limit plate, a U-shaped part, a slide groove, a buffer spring, a pressure sensor and an LED lamp bead. Guide blocks are fixedly connected to the side walls of both sides of the fixed bin, and limit plates are fixedly connected at both ends of the two guide blocks. Slide grooves are provided on both sides of the U-shaped part, and the slide grooves and guide blocks slide in cooperation with each other. A buffer spring is fixedly connected to the bottom wall of the U-shaped part. There are several buffer springs in total, and several buffer springs are fixedly hung on the bottom wall of the U-shaped part at equidistant intervals. The compression strokes of several buffer springs are the same, and the compression stroke of the buffer spring is 1-2cm. A pressure sensor is fixedly installed on the bottom surface of the U-shaped part, and an LED lamp bead is fixedly installed on the outer surface of the slide groove. The LED lamp bead is externally connected to a power supply and a single-chip microcomputer controller. The pressure sensor and the single-chip microcomputer controller are electrically connected to each other, and the threshold value set by the pressure sensor is the maximum force value that the direct-drive electric push rod body can withstand.

[0011] Furthermore, the mounting seat mechanism comprises a mounting seat, a mounting plate, a mounting hole, a connecting seat, a limit slider, a locking limit block, a reset connecting spring, a handle rod, a positioning column, an ejection column and an ejection spring, the mounting seat is fixedly connected to the mounting plate at the bottom surface, mounting holes are provided at both sides of the mounting plate, a slot is provided at the middle position of the mounting seat, the shape and size of the slot of the mounting seat are the same as those of the connecting seat, an inner cavity is provided at both sides of the mounting seat, and limit sliders are slidably arranged in the inner cavities on both sides of the mounting seat, a locking limit block is fixedly connected to a side wall of one side of the limit slider, one end of the handle rod is fixedly connected to a side wall of the other side of the limit slider, the other end of the handle rod passes through the side wall of the inner cavity of the mounting seat and extends outside the wall, one end of the reset connecting spring is fixedly connected to the side wall of the limit slider, and the other end of the reset connecting spring extends to the inner cavity side wall of the mounting seat The locking block is provided with an inclined surface on both sides of the bottom end of the connecting seat, and an inclined surface is provided at one end of the locking block, and the upper surface of the connecting seat and the bottom surface of the positioning column are fixedly connected to each other.

[0012] Furthermore, the method for manufacturing the gapless direct-drive electric linear actuator comprises the following steps:

[0013] (1) The direct-drive electric push rod body and the fixed bin are fixedly connected by bolts and nuts on one side of the upper surface of the fixed bin, and then the auxiliary motor is fixedly installed by bolts and nuts on the other side of the upper surface of the fixed bin, and then the guide blocks are welded and fixed by electric welding devices on both side walls of the fixed bin, and then the fixed bin is fixed at the side of the fixed bin, and the annular fixing block is fixed by welding at one end of the fixed bin, and the annular fixing block is sleeved on the inner tube of the direct-drive electric push rod body;

[0014] (2) A fixed shell is fixed on the bottom surface of the fixed chamber by welding, and the corresponding fixed shell, slider, threaded rod, connecting sleeve rod, connecting rod, connecting spring, piston, bevel gear A, bevel gear B and rotating part are assembled in the inner cavity of the fixed shell, and then one end of the rotating part and one end of the auxiliary motor are fixed by welding;

[0015] (3) A first connecting capillary and a second connecting capillary are respectively arranged on both sides of the fixed chamber, and one end of the first connecting capillary extends into the annular inner cavity, and one end of the second connecting capillary extends into the inner cavity of the fixed shell, and a sealant is used to fill and fix the corresponding gaps between the first connecting capillary and the second connecting capillary;

[0016] (4) Cut corresponding slide grooves on both sides of the U-shaped member by a cutting device, then select a buffer spring of the same model, and weld one end of the buffer spring to the bottom surface of the U-shaped member by an electric welding device. After welding, fix the pressure sensor at the middle position of the bottom wall of the U-shaped member by a fixing bolt, and glue the LED lamp beads to the side wall of the U-shaped member by an adhesive. After fixing, assemble the slide grooves on both sides of the U-shaped member on the guide block. After assembly, fix the limit plate at one end of the guide block by bolts, and connect the pressure sensor and the LED lamp beads to the corresponding single-chip controller and power supply through wires;

[0017] (5) The mounting seat and the mounting plate are welded and fixed by an electric welding device, corresponding mounting holes are opened on both sides of the mounting plate by a drilling device, a slot is opened in the middle position of the mounting seat, an inner cavity is opened on both sides of the mounting seat, and corresponding limit sliders, locking limit blocks, reset connection springs and handle rods are assembled in the inner cavity, and then the positioning column, ejection column and ejection spring are assembled, one end of the positioning column is fixed in the slot of the mounting seat by electric welding, corresponding limit holes are opened on both sides of the connecting seat, the connecting seat and the bottom surface of the shock absorbing mechanism are welded and fixed by an electric welding device, and then the connecting seat and the mounting seat are assembled and fixed;

[0018] (6) Inspect the finished product after production, apply appropriate lubricating oil and grease, spray anti-rust and anti-corrosion paint on metal parts to complete the production work.

[0019] Furthermore, in step (6), lubricating oil is filled into the annular inner cavity, the inner cavity of the fixed bin and the left inner cavity of the fixed shell.

[0020] Furthermore, in the step (6), the unqualified products are separated again and reassembled after separation.

[0021] The benefit of the present application lies in providing a direct-drive electric push rod which is easy to install and has a shock-absorbing and lubricating effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0023] Figure 1 It is a schematic diagram of a three-dimensional structure of a gapless direct-drive electric push rod according to an embodiment of the present application.

[0024] Figure 2 yes Figure 1 Schematic diagram of the planar structure of the gapless direct-drive electric push rod in the illustrated embodiment.

[0025] Figure 3 yes Figure 2 A schematic diagram of the local enlarged structure at point A in the illustrated embodiment.

[0026] Figure 4 yes Figure 3 A schematic diagram of the three-dimensional structure of the embodiment shown.

[0027] Figure 5 yes Figure 4 A schematic diagram of the three-dimensional structure of the connecting sleeve rod in the illustrated embodiment.

[0028] Figure 6 yes Figure 1 A schematic diagram of the three-dimensional structure of the lubrication mechanism in the illustrated embodiment.

[0029] Figure 7 yes Figure 1 Schematic diagram of the internal structure of the shock absorbing mechanism in the illustrated embodiment.

[0030] Figure 8 yes Figure 1 A schematic diagram of the three-dimensional structure of the shock absorbing mechanism in the illustrated embodiment.

[0031] Fig. 9 yes Figure 1 Schematic diagram of the internal structure of the mounting seat mechanism in the illustrated embodiment.

[0032] Fig.10 yes Fig. 9 A schematic diagram of the internal structure of the positioning column in the illustrated embodiment.

[0033] Meanings of the reference numerals in the figure: 100, gapless direct-drive electric push rod, 101, direct-drive electric push rod body, 102, support base, 103, auxiliary motor, 104, fixed bin, 105, lubrication mechanism, 1051, annular fixed block, 1052, annular inner cavity, 1053, ball, 1054, rubber gasket, 106, first connecting capillary, 107, second connecting capillary, 108, oil storage mechanism, 1081, fixed shell, 1082, slider, 1083, threaded rod, 1084, connecting sleeve rod, 1085, connecting rod, 1086, connecting spring, 1087, piston, 1088, bevel gear A, 1089 , bevel gear B, 1089a, rotating part, 1089b, partition plate, 109, shock absorbing mechanism, 1091, guide block, 1092, limit plate, 1093, U-shaped part, 1094, slide groove, 1095, buffer spring, 1096, pressure sensor, 1097, LED lamp bead, 110, mounting seat mechanism, 1101, mounting seat, 1102, mounting plate, 1103, mounting hole, 1104, connecting seat, 1105, limit slider, 1106, locking limit block, 1107, reset connecting spring, 1108, handle rod, 1109, positioning column, 1109a, ejection column, 1109b, ejection spring. DETAILED DESCRIPTION

[0034] In order to make the purpose, features, and advantages of the present application more obvious and easy to understand, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the embodiments described below are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0035] The technical solution of the present application is further explained below with reference to the accompanying drawings and through specific implementation methods.

[0036] In the description of the present application, it should be understood that the terms "upper", "lower", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0037] Reference Figure 1 to Figure 2The gapless direct-drive electric linear actuator 100 includes a direct-drive electric linear actuator body 101, a support base 102, an auxiliary motor 103, a fixed bin 104, a lubrication mechanism 105, a first connecting capillary 106, a second connecting capillary 107, an oil storage mechanism 108, a shock absorbing mechanism 109 and a mounting seat mechanism 110.

[0038] The bottom end of the direct-drive electric push rod body 101 is fixedly connected to the upper surface of the fixed bin 104, the auxiliary motor 103 is fixedly installed on the upper surface of the fixed bin 104, the output shaft end of the auxiliary motor 103 extends to the bottom surface of the fixed bin 104, the side of the fixed bin 104 is fixedly connected to the side wall of the support base 102, the top of the fixed bin 104 extends to the junction of the inner tube and the outer tube of the direct-drive electric push rod body 101, a lubrication mechanism 105 is installed at the junction of the inner tube and the outer tube of the direct-drive electric push rod body 101, the lower surface of the fixed bin 104 is fixedly connected to the upper surface of the oil storage mechanism 108, the shock absorbing mechanism 109 is installed on the side wall of the fixed bin 104, and the mounting seat mechanism 110 is installed on the bottom surface of the shock absorbing mechanism 109.

[0039] As an optimization solution, Figure 6As shown, the lubrication mechanism 105 includes an annular fixing block 1051, an annular inner cavity 1052, balls 1053 and a rubber gasket 1054. The annular fixing block 1051 is provided with an annular inner cavity 1052, and a rubber gasket 1054 is fixedly provided on the inner wall of the annular fixing block 1051. The inner wall of the annular fixing block 1051 is provided with a plurality of spherical cavities, and balls 1053 are rotatably provided in the spherical cavities of the annular fixing block 1051. There are a plurality of balls 1053, and the plurality of balls 1053 are rotatably provided in the plurality of spherical cavities. The plurality of balls 1053 are equidistantly provided. The inner cavity of the annular inner cavity 1052 is filled with lubricating oil. When the direct-drive electric push rod body 101 is in telescopic operation, the balls 1053 will contact with the outer wall of the inner tube of the direct-drive electric push rod body 101, and the inner tube of the direct-drive electric push rod body 101 The telescopic movement can drive the ball 1053 to rotate. When the ball 1053 rotates, it will contact the lubricating oil in the annular inner cavity 1052, so that the outer surface of the ball 1053 is fully adhered to the lubricating oil. The lubricating oil can be applied to the outer wall of the inner tube of the direct-drive electric push rod body 101 through the rotation of the ball 1053. As the inner tube continues to expand and contract, the direct-drive electric push rod body 101 can be lubricated, effectively avoiding rust and jamming and other faults, thereby improving the use effect of the direct-drive electric push rod body 101. At the same time, the rolling and applying of lubricating oil by the ball 1053 can save lubricating oil. Compared with some traditional lubrication mechanisms, the lubrication duration is long and it is not easy to have a large amount of oil discharge. At the same time, the setting of the rubber gasket 1054 can play a certain blocking role on the seeping lubricating oil, further reducing the waste of lubricating oil and improving the use effect.

[0040] Specifically, if Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, the oil storage mechanism 108 includes a fixed shell 1081, a slider 1082, a threaded rod 1083, a connecting sleeve rod 1084, a connecting rod 1085, a connecting spring 1086, a piston 1087, a bevel gear A1088, a rotating member 1089a and a partition plate 1089b. The partition plate 1089b is fixedly arranged in the inner cavity of the fixed shell 1081, and the piston 1087 is slidably arranged in the left inner cavity of the fixed shell 1081. The left inner cavity of the shell 1081 is filled with lubricating oil, a slider 1082 is slidably arranged in the right inner cavity of the fixed shell 1081, a threaded rod 1083 is rotatably connected between the partition plate 1089b and the inner wall of the fixed shell 1081, the threaded rod 1083 passes through the slider 1082 and is threadedly matched with the slider 1082, a bevel gear A1088 is fixedly sleeved on the threaded rod 1083, and a bevel gear A1088 is rotatably connected to the upper wall of the fixed shell 1081. Rotating member 1089a, one end of which is fixedly connected with a bevel gear B1089, the bevel gear B1089 and the bevel gear A1088 are meshed with each other, a connecting sleeve rod 1084 is fixedly connected with a side wall of one side of the slider 1082, one end of the connecting sleeve rod 1084 passes through the partition plate 1089b and extends to the left inner cavity of the fixed shell 1081, the connecting sleeve rod 1084 is slidingly connected with the connecting rod 1085, one end of the connecting spring 1086 is fixedly connected with one end of the connecting rod 1085, and the other end of the connecting spring 1086 is fixedly connected with the inner wall of the connecting sleeve rod 1084, the rotation of the threaded rod 1083 can drive the slider 1082 to move, the movement of the slider 1082 can drive the connecting sleeve rod 1084 to move, and then drive the connecting rod 1085 to move, and then drive the piston 1087 to move.

[0041] Specifically, if Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the end of the output shaft of the fixed bin 104 is fixedly connected to one end of the rotating member 1089a. The operation of the fixed bin 104 can drive the rotating member 1089a to rotate, thereby driving the bevel gear B1089 to rotate, thereby driving the bevel gear A1088 to rotate, and thereby driving the threaded rod 1083 to rotate.

[0042] As a further optimization solution, Figure 3 , Figure 4 and Figure 5As shown, the inner cavity of the fixed chamber 104 is filled with lubricating oil, and a first connecting capillary 106 is fixedly arranged at one end of the inner cavity of the fixed chamber 104, and one end of the first connecting capillary 106 extends into the annular inner cavity 1052 of the lubricating mechanism 105, and a second connecting capillary 107 is arranged at the other end of the inner cavity of the fixed chamber 104, and one end of the second connecting capillary 107 extends into the left inner cavity of the fixed shell 1081. Through the setting of the oil storage mechanism 108, when the amount of oil in the lubricating mechanism 105 is insufficient or the lubrication effect is insufficient, the auxiliary electric The working of the motor 103 drives the piston 1087 to move. The movement of the piston 1087 can transport the lubricating oil in the left inner cavity of the fixed shell 1081 to the inside of the annular inner cavity 1052 through the fixed chamber 104 to replenish the lubricating oil of the lubricating mechanism 105. When the driving piston 1087 moves, the connecting sleeve rod 1084 will be pushed to the left. Since the connecting rod 1085 and the connecting sleeve rod 1084 are in sliding cooperation, the connecting spring 1086 between the two will inevitably be compressed. After the auxiliary motor 103 stops working, the connecting spring 1086 is in In the compressed state, the connecting spring 1086 slowly rebounds. Since the piston 1087 itself has resistance in its movement, the rebound elastic force of the connecting spring 1086 can push the connecting rod 1085 to overcome its own resistance and slowly continue to move to the left, thereby continuously pressurizing the lubricating oil into the inner cavity of the annular inner cavity 1052, thereby extending the duration. Due to the increase in the pressure inside the annular inner cavity 1052, the lubricating oil will inevitably accelerate to penetrate into the direct-drive electric push rod body 101 through the gap at the ball 1053, thereby enhancing the lubrication effect. When there is too much lubricating oil and waste occurs, the auxiliary motor 103 can also drive the slider 1082 to move right, thereby driving the piston 1087 to move right, and then reducing the oil inside the annular cavity 1052 through the negative pressure effect, thereby reducing the lubricating oil and thus reducing waste. The coordinated use of the lubrication mechanism 105 and the oil storage mechanism 108 can not only achieve a better lubrication effect on the direct-drive electric push rod body 101, but also effectively adjust the lubrication intensity to avoid waste or insufficient lubrication effect. It is suitable for use on various electric push rods.

[0043] As an optimization solution, Figure 7 and Figure 8As shown, the shock absorbing mechanism 109 includes a guide block 1091, a limit plate 1092, a U-shaped member 1093, a slide 1094, a buffer spring 1095, a pressure sensor 1096 and an LED lamp bead 1097. The side walls of the fixed bin 104 are fixedly connected with guide blocks 1091, and the two ends of the two guide blocks 1091 are fixedly connected with the limit plates 1092. The two sides of the U-shaped member 1093 are provided with slides 1094, and the slides 1094 and the guide blocks 1091 slide with each other. The bottom wall of the U-shaped member 1093 is fixed with the guide blocks 1091. A buffer spring 1095 is connected, and there are a total of several buffer springs 1095. Several buffer springs 1095 are fixedly hung on the bottom wall of the U-shaped member 1093 at equal distances. The compression strokes of the several buffer springs 1095 are the same, and the compression stroke of the buffer spring 1095 is 1-2 cm. A pressure sensor 1096 is fixedly installed on the bottom surface of the U-shaped member 1093, and an LED lamp bead 1097 is fixedly arranged on the outer surface of the slide groove 1094. The LED lamp bead 1097 is externally connected to a power supply and a single-chip microcomputer controller. The pressure sensor 1096 is connected to the single-chip microcomputer. The controllers are electrically connected to each other. The threshold value set by the pressure sensor 1096 is the maximum force value that the direct-drive electric push rod body 101 can withstand. When the direct-drive electric push rod body 101 is working, vibration will occur. During vibration, the vibration can be absorbed and buffered by the buffering effect of the buffer spring 1095, which can effectively reduce the noise generated by the vibration of the direct-drive electric push rod body 101. At the same time, the guide effect of the guide block 1091 can effectively avoid deviation. Since the compression stroke of the buffer spring 1095 is 1-2cm, the present application can be applied to the case where the error is within 2cm. The equipment is working. At the same time, when the pressure supported by the direct-drive electric push rod body 101 of the present application is too large, the bottom surface of the oil storage mechanism 108 will contact and pressurize the pressure sensor 1096. When the pressure exceeds the threshold of the pressure sensor 1096, the pressure sensor 1096 transmits a signal to the corresponding single-chip controller, and the single-chip controller controls the LED lamp bead 1097 to flash, so that relevant personnel can be reminded in time to adjust the supporting pressure to avoid damage to the direct-drive electric push rod body 101 caused by excessive pressure, thereby playing a better reminder and protection role.

[0044] As a further optimization solution, Fig. 9 and Fig.10As shown, the mounting seat mechanism 110 includes a mounting seat 1101, a mounting plate 1102, a mounting hole 1103, a connecting seat 1104, a limiting slider 1105, a locking limiting block 1106, a reset connecting spring 1107, a handle rod 1108, a positioning column 1109, an ejection column 1109a and an ejection spring 1109b, the bottom surface of the mounting seat 1101 is fixedly connected with the mounting plate 1102, both sides of the mounting plate 1102 are provided with mounting holes 1103, the middle position of the mounting seat 1101 is provided with a slot, the shape and size of the slot of the mounting seat 1101 are the same as the shape and size of the connecting seat 1104, both sides of the mounting seat 1101 are provided with inner cavities, and the mounting seat 1101 Limiting sliders 1105 are slidably arranged in the inner cavities on both sides, and a locking limiting block 1106 is fixedly connected to the side wall of one side of the limiting slider 1105, and one end of a handle rod 1108 is fixedly connected to the side wall of the other side of the limiting slider 1105, and the other end of the handle rod 1108 passes through the inner cavity side wall of the mounting seat 1101 and extends to the outside of the wall, and one end of a reset connecting spring 1107 is fixedly connected to the side wall of the limiting slider 1105, and the other end of the reset connecting spring 1107 extends to the inner cavity side wall of the mounting seat 1101 and is fixedly connected to the mounting seat 1101, and limiting grooves are provided on both sides of the connecting seat 1104, and one end of the locking limiting block 1106 extends to the inner cavity side wall of the connecting seat 1104. In the limiting groove, a positioning column 1109 is fixedly arranged at the bottom wall of the slot of the mounting seat 1101, a limiting hole is provided on the connecting seat 1104, the limiting hole diameter of the connecting seat 1104 is the same as the diameter of the positioning column 1109, the positioning column 1109 extends into the limiting hole of the connecting seat 1104, the positioning column 1109 and the ejection column 1109a are both provided with an inner cavity, the positioning column 1109 and the ejection column 1109a are slidably connected, one end of an ejection spring 1109b is fixedly connected to the bottom wall of the inner cavity of the positioning column 1109, and the other end of the ejection spring 1109b extends to the upper wall of the inner cavity of the ejection column 1109a and is fixed to the upper wall of the inner cavity of the ejection column 1109a. The ejection spring 1109b is in a compressed state, inclined surfaces are provided on both sides of the bottom end of the connecting seat 1104, and an inclined surface is provided at one end of the locking limit block 1106. The upper surface of the connecting seat 1104 and the bottom surface of the positioning column 1109 are fixedly connected to each other. When the device is installed and fixed, it is fixed at the corresponding installation position through the mounting holes 1103 on the mounting plate 1102 in conjunction with bolts. When the application needs to be removed from the installation position, the staff can manually move the handle rods 1108 on both sides, and the limit slider 1105 is driven to move by moving the handle rods 1108, thereby driving the locking limit block 1106 to move, so that the locking limit block 1106 is separated from the connecting seat 1104.At this time, the ejection column 1109a is driven upward by the rebound effect of the ejection spring 1109b, and then the connecting seat 1104 is ejected from the slot of the mounting seat 1101, which will separate the mounting seat 1101 and the connecting seat 1104, so that the device can be removed from the installation position, and maintenance and replacement can be carried out more conveniently. When the device needs to be fixed at the installation position again, the connecting seat 1104 at the bottom of the device is reinserted into the slot of the mounting seat 1101, and the connecting seat 1104 is pressed down, so that the inclined surface at the bottom of the connecting seat 1104 contacts the inclined surface of the locking limit block 1106, so that the locking limit block 1106 is squeezed and moved, thereby driving the limit slider 1105 moves, so that the reset connection spring 1107 is in a compressed state. When the connection seat 1104 is pressed down to the end, the rebound effect of the reset connection spring 1107 drives the limit slider 1105 to move, and then drives the locking limit block 1106 to move, so that the locking limit block 1106 is inserted into the limit groove of the connection seat 1104. The connection seat 1104 is fixed by the limit locking effect of the locking limit block 1106, and the fixing work is completed. Through the installation seat mechanism 110, the device can be removed and repaired more conveniently. The operation is simple and convenient. When removing and fixing again, no other auxiliary tools are required, which is suitable for promotion.

[0045] The method for manufacturing the gapless direct-drive electric push rod comprises the following steps:

[0046] (1) The direct-drive electric push rod body and the fixed bin are fixedly connected by bolts and nuts on one side of the upper surface of the fixed bin, and then the auxiliary motor is fixedly installed by bolts and nuts on the other side of the upper surface of the fixed bin, and then the guide blocks are welded and fixed by electric welding devices on both side walls of the fixed bin, and then the fixed bin is fixed at the side of the fixed bin, and the annular fixing block is fixed by welding at one end of the fixed bin, and the annular fixing block is sleeved on the inner tube of the direct-drive electric push rod body;

[0047] (2) Fix the fixed shell at the bottom surface of the fixed chamber by welding, assemble the corresponding fixed shell, slider, threaded rod, connecting sleeve rod, connecting rod, connecting spring, piston, bevel gear A, bevel gear B and rotating part in the inner cavity of the fixed shell, and then fix one end of the rotating part and one end of the auxiliary motor by welding;

[0048] (3) A first connecting capillary and a second connecting capillary are respectively arranged on both sides of the fixed chamber, and one end of the first connecting capillary extends into the annular inner cavity, and one end of the second connecting capillary extends into the inner cavity of the fixed shell, and a sealant is used to fill and fix the corresponding gaps between the first connecting capillary and the second connecting capillary;

[0049] (4) The corresponding slide grooves are cut on both sides of the U-shaped part by a cutting device, and then a buffer spring of the same model is selected, and one end of the buffer spring is welded and fixed to the bottom surface of the U-shaped part by an electric welding device. After welding and fixing, the pressure sensor is fixed at the middle position of the bottom wall of the U-shaped part by a fixing bolt, and the LED lamp beads are bonded and fixed at the side wall of the U-shaped part by an adhesive. After fixing, the slide grooves on both sides of the U-shaped part are assembled on the guide block. After assembly, the limit plate is fixed at one end of the guide block by bolts, and the pressure sensor and the LED lamp beads are connected to the corresponding single-chip controller and power supply through wires.

[0050] (5) The mounting seat and the mounting plate are welded and fixed by an electric welding device, corresponding mounting holes are opened on both sides of the mounting plate by a drilling device, a slot is opened in the middle position of the mounting seat, an inner cavity is opened on both sides of the mounting seat, and the corresponding limit slider, locking limit block, reset connection spring and handle rod are assembled in the inner cavity, and then the positioning column, ejection column and ejection spring are assembled, one end of the positioning column is fixed in the slot of the mounting seat by electric welding, corresponding limit holes are opened on both sides of the connecting seat, the connecting seat and the bottom surface of the shock absorbing mechanism are welded and fixed by an electric welding device, and then the connecting seat and the mounting seat are assembled and fixed

[0051] It will be apparent to those skilled in the art that the present application is not limited to the details of the exemplary embodiments described above, and that the present application can be implemented in other specific forms without departing from the spirit or essential features of the present application. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the present application is defined by the appended claims rather than the above description, and it is intended that all changes within the meaning and scope of the equivalent elements of the claims be included in the present application. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0052] As described above, the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A gapless direct-drive electric linear actuator, characterized in that: It includes a direct-drive electric push rod body, a supporting base, an auxiliary motor, a fixing bin, a lubrication mechanism, an oil storage mechanism, a shock absorbing mechanism and a mounting seat mechanism; The bottom end of the direct-drive electric push rod body is fixedly connected to the upper surface of the fixed bin, the auxiliary motor is fixedly installed on the upper surface of the fixed bin, the output shaft end of the auxiliary motor extends to the bottom surface of the fixed bin, the side of the fixed bin is fixedly connected to the side wall of the support base, the top of the fixed bin extends to the junction of the inner tube and the outer tube of the direct-drive electric push rod body, a lubrication mechanism is installed at the junction of the inner tube and the outer tube of the direct-drive electric push rod body, the lower surface of the fixed bin is fixedly connected to the upper surface of the oil storage mechanism, the shock absorbing mechanism is installed on the side wall of the fixed bin, and the mounting seat mechanism is installed on the bottom surface of the shock absorbing mechanism; The lubrication mechanism comprises an annular fixing block, an annular inner cavity, balls and a rubber gasket. An annular inner cavity is provided inside the annular fixing block. A rubber gasket is fixedly provided on the inner wall of the annular fixing block. A plurality of spherical cavities are provided on the inner wall of the annular fixing block. Balls are rotatably provided in the spherical cavities of the annular fixing block. There are a plurality of balls in total. The plurality of balls are rotatably provided in the plurality of spherical cavities. The plurality of balls are equidistantly provided. The inner cavity of the annular inner cavity is filled with lubricating oil. The oil storage mechanism includes a fixed shell, a slider, a threaded rod, a connecting sleeve rod, a connecting rod, a connecting spring, a piston, a bevel gear A, a rotating member and a partition plate. The inner cavity of the fixed shell is fixedly provided with a partition plate, the left inner cavity of the fixed shell is slidably provided with a piston, the left inner cavity of the fixed shell is filled with lubricating oil, the right inner cavity of the fixed shell is slidably provided with a slider, a threaded rod is rotatably connected between the partition plate and the inner wall of the fixed shell, the threaded rod passes through the slider and is threadedly matched with the slider, and a cone is fixedly sleeved on the threaded rod. A bevel gear A is rotatably connected to a rotating member at the upper wall of the fixed shell, one end of the rotating member is fixedly connected to a bevel gear B, the bevel gear B and the bevel gear A are meshed with each other, a connecting sleeve rod is fixedly connected to a side wall of one side of the slider, one end of the connecting sleeve rod passes through the partition plate and extends to the left inner cavity of the fixed shell, the connecting sleeve rod is slidably connected to the connecting rod, one end of the connecting spring is fixedly connected to one end of the connecting rod, and the other end of the connecting spring is fixedly connected to the inner wall of the connecting sleeve rod.

2. The gapless direct-drive electric linear actuator according to claim 1, characterized in that: The output shaft end of the fixed bin is fixedly connected to one end of the rotating member.

3. The gapless direct-drive electric linear actuator according to claim 2, characterized in that: The inner cavity of the fixed bin is filled with lubricating oil, a first connecting capillary is fixedly provided at one end of the inner cavity of the fixed bin, one end of the first connecting capillary extends into the annular inner cavity of the lubrication mechanism, a second connecting capillary is provided at the other end of the inner cavity of the fixed bin, one end of the second connecting capillary extends into the left inner cavity of the fixed shell.

4. The gapless direct-drive electric linear actuator according to claim 3, characterized in that: The shock absorbing mechanism includes a guide block, a limit plate, a U-shaped part, a slide groove, a buffer spring, a pressure sensor and an LED lamp bead. The guide blocks are fixedly connected to the side walls of the fixed bin, and the two ends of the two guide blocks are fixedly connected to the limit plates. Slide grooves are provided on both sides of the U-shaped part, and the slide grooves and the guide blocks slide in cooperation with each other. A buffer spring is fixedly connected to the bottom wall of the U-shaped part. There are several buffer springs in total, and several buffer springs are fixedly hung on the bottom wall of the U-shaped part at equidistant intervals. The compression strokes of several buffer springs are the same, and the compression stroke of the buffer spring is 1-2cm. A pressure sensor is fixedly installed on the bottom surface of the U-shaped part, and an LED lamp bead is fixedly installed on the outer surface of the slide groove. The LED lamp bead is externally connected to a power supply and a single-chip microcomputer controller. The pressure sensor and the single-chip microcomputer controller are electrically connected to each other, and the threshold value set by the pressure sensor is the maximum force value that the direct-drive electric push rod body can withstand.

5. The gapless direct-drive electric linear actuator according to claim 4, characterized in that: The mounting seat mechanism comprises a mounting seat, a mounting plate, a mounting hole, a connecting seat, a limit slider, a locking limit block, a reset connecting spring, a handle rod, a positioning column, an ejection column and an ejection spring, the mounting seat is fixedly connected to the mounting plate at the bottom surface, mounting holes are provided on both sides of the mounting plate, a slot is provided at the middle position of the mounting seat, the shape and size of the slot of the mounting seat are the same as those of the connecting seat, an inner cavity is provided on both sides of the mounting seat, and limit sliders are slidably arranged in the inner cavities on both sides of the mounting seat, a locking limit block is fixedly connected to the side wall of one side of the limit slider, one end of the handle rod is fixedly connected to the side wall of the inner cavity of the mounting seat, the other end of the handle rod passes through the side wall of the inner cavity of the mounting seat and extends outside the wall, one end of the reset connecting spring is fixedly connected to the side wall of the limit slider, and the other end of the reset connecting spring extends to the side wall of the inner cavity of the mounting seat The locking block is provided with an inclined surface at one end, and the upper surface of the locking block is provided with an inclined surface. The upper surface of the connecting seat and the bottom surface of the locking block are fixedly connected to each other.

6. A method for manufacturing a gapless direct-drive electric linear actuator according to any one of claims 1 to 5, characterized in that: The method comprises the following steps: (1) The direct-drive electric push rod body and the fixed bin are fixedly connected by bolts and nuts on one side of the upper surface of the fixed bin, and then the auxiliary motor is fixedly installed by bolts and nuts on the other side of the upper surface of the fixed bin, and then the guide blocks are welded and fixed by electric welding devices on both side walls of the fixed bin, and then the fixed bin is fixed at the side of the fixed bin, and the annular fixing block is fixed by welding at one end of the fixed bin, and the annular fixing block is sleeved on the inner tube of the direct-drive electric push rod body; (2) A fixed shell is fixed on the bottom surface of the fixed bin by welding, and a corresponding fixed shell, a slider, a threaded rod, a connecting sleeve rod, a connecting rod, a connecting spring, a piston, a bevel gear A, a bevel gear B and a rotating member are assembled in the inner cavity of the fixed bin, and then one end of the rotating member and one end of the auxiliary motor are fixed by welding; (3) A first connecting capillary and a second connecting capillary are respectively arranged on both sides of the fixed chamber, and one end of the first connecting capillary extends into the annular inner cavity, and one end of the second connecting capillary extends into the inner cavity of the fixed shell, and a sealant is used to fill and fix the corresponding gaps between the first connecting capillary and the second connecting capillary; (4) Cut corresponding slide grooves on both sides of the U-shaped member by a cutting device, then select a buffer spring of the same model, and weld one end of the buffer spring to the bottom surface of the U-shaped member by an electric welding device. After welding, fix the pressure sensor at the middle position of the bottom wall of the U-shaped member by a fixing bolt, and glue the LED lamp beads to the side wall of the U-shaped member by an adhesive. After fixing, assemble the slide grooves on both sides of the U-shaped member on the guide block. After assembly, fix the limit plate at one end of the guide block by bolts, and connect the pressure sensor and the LED lamp beads to the corresponding single-chip controller and power supply through wires; (5) The mounting seat and the mounting plate are welded and fixed by an electric welding device, corresponding mounting holes are opened on both sides of the mounting plate by a drilling device, a slot is opened in the middle position of the mounting seat, an inner cavity is opened on both sides of the mounting seat, and corresponding limit sliders, locking limit blocks, reset connection springs and handle rods are assembled in the inner cavity, and then the positioning column, ejection column and ejection spring are assembled, one end of the positioning column is fixed in the slot of the mounting seat by electric welding, corresponding limit holes are opened on both sides of the connecting seat, the connecting seat and the bottom surface of the shock absorbing mechanism are welded and fixed by an electric welding device, and then the connecting seat and the mounting seat are assembled and fixed; (6) Inspect the finished product after production, apply appropriate lubricating oil and grease, spray anti-rust and anti-corrosion paint on metal parts to complete the production work.

7. The method for manufacturing a gapless direct-drive electric linear actuator according to claim 6, characterized in that: In the step (6), lubricating oil is filled into the annular inner cavity, the inner cavity of the fixed chamber and the left inner cavity of the fixed shell.

8. The method for manufacturing a gapless direct-drive electric linear actuator according to claim 6, characterized in that: In the step (6), the unqualified products are separated again and reassembled after separation.

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