Solar electric push rod

Abstract

The utility model discloses a solar electric push rod in the technical field of electric push rods, which comprises a driving assembly, a transmission assembly and a push rod assembly, the driving assembly drives the push rod assembly to work through the transmission assembly, and the transmission assembly comprises a gear box body and a transmission gear set assembled in the gear box body. An oil blocking structural part covering the transmission gear set is assembled in the gear box body so as to prevent grease smeared on the surface of the transmission gear set from splashing or losing during high-speed rotation of gears, and the side baffle is arranged around the side face of the transmission gear set so as to prevent the grease from losing from the side face. By means of the structure, grease is firmly reserved on the surface of the gear when the gear rotates at a high speed, the gear can be fully lubricated all the time, therefore, long-term stable operation of the gear is guaranteed, the service life of the gear is remarkably prolonged, and the risk that the gear is abraded and damaged due to poor lubrication is greatly reduced through the structure.

Description

TECHNICAL FIELD

[0001] The utility model relates to electric push rod technical field, concretely is a solar electric push rod. BACKGROUND

[0002] Electric push rod is widely used in industrial, domestic, solar and medical equipment and other technical fields, such as on photovoltaic solar panel has extensive application, gear is as the key transmission component of electric push rod, and its running state directly influences the performance and life of the whole mechanical system, in the process of continuous rotation of gear, to reduce friction, reduce wear, usually smearing grease on the surface of gear and lubricating;

[0003] However, electric push rod in the working process, because gear is in high-speed rotation state, therefore, the grease smearing on its surface will be affected by centrifugal force and be thrown out gear surface, grease loss can make the lubrication effect significantly reduce and then make the friction of gear surface increase, accelerate the wear process of gear, long-term lack of sufficient lubrication, gear not only service life will be greatly shortened, and even possible damage situation, and then influence the normal operation of the whole mechanical system. SUMMARY

[0004] In order to overcome the insufficient prior art, the utility model provides a solar electric push rod, can effectively solve the technical problem that electric push rod in the working process, because gear is in high-speed rotation state, therefore, the grease smearing on its surface will be affected by centrifugal force and be thrown out gear surface.

[0005] The utility model solves its technical problem adopts the technical scheme that a solar electric push rod, including drive assembly, transmission assembly and push rod assembly, drive assembly passes through transmission assembly and drives push rod assembly work, transmission assembly includes gear box and transmission gear group that is equipped in gear box interior, the inside of gear box is equipped with the oil blocking structure spare that covers transmission gear group, to prevent grease smearing on the surface of transmission gear group and splash or loss when gear high speed rotates.

[0006] Further, the oil blocking structure spare includes oil baffle and side baffle, the side baffle is arranged around the side of transmission gear group, to prevent grease loss from the side.

[0007] Further, the oil baffle is arranged above the side baffle, and the oil baffle is located above the transmission gear group, the oil baffle is provided with a hollow slot, so that the drive assembly and the push rod assembly pass through the hollow slot and are connected with the transmission gear group.

[0008] Further, the gear box comprises an upper shell and a lower shell, the upper shell and the lower shell are closed to form a containing cavity for containing the transmission gear set, the oil baffle is matched with the containing cavity in shape and size, and the oil baffle is provided with a connecting protrusion connected with the upper shell to fix the position of the oil baffle in the gear box.

[0009] Further, a sealing gasket is arranged between the upper shell and the lower shell, a first lip is arranged around the lower end of the upper shell near the periphery of the upper shell, a positioning block is arranged around the lower end of the upper shell near the inner periphery of the upper shell, a gap is formed between the first lip and the positioning block to form a sealing groove, the sealing gasket is arranged in the sealing groove, and a second lip is arranged around the upper end of the lower shell near the periphery of the lower shell, the upper shell and the lower shell are closed, and the first lip and the second lip are in contact to realize sealing and waterproofing.

[0010] Further, the gear box is provided with an outer tube, the push rod assembly comprises an inner tube, a lead screw and a nut, the inner tube is arranged in the outer tube and is connected with the outer tube in a sliding mode, one end of the inner tube is connected with the nut, the nut is screwed on the lead screw, one end of the lead screw is driven to rotate by the transmission gear set, the nut moves along the axial direction of the lead screw, and the nut drives the inner tube to move up and down in the outer tube.

[0011] Further, an end cover is arranged at the end of the outer tube away from the transmission gear set, a through hole is arranged at the center of the end cover, one end of the inner tube passes through the through hole and is connected with the end cover in a sliding mode, and a protection structure is arranged between the outer tube and the end cover to improve the sealing and waterproof performance and stability between the outer tube and the end cover.

[0012] Further, the outer tube is provided with at least one oil injection hole and a plugging bolt, the plugging bolt is connected with the oil injection hole in a threaded mode to plug the oil injection hole, the inner tube is provided with an oil injection part, the oil injection part is connected with the inner cavity of the inner tube in a communicating mode, the oil injection hole is aligned with the oil injection part and is injected with oil, and the oil flows into the inner tube through the oil injection part.

[0013] Further, a support transmission structure is arranged between the outer tube and the gear box, the outer side of the lead screw is provided with a shaft coupling, the support transmission structure is connected with the shaft coupling to assist in maintaining the coaxiality of the shaft coupling and the lead screw, and the support transmission structure is connected with the outer tube.

[0014] Further, the driving assembly comprises a mounting box and a driving part arranged in the mounting box, the gear box is provided with a positioning column connected with the mounting box, and a waterproof gasket is arranged between the mounting box and the gear box.

[0015] Compared with the prior art, the utility model has the advantages that:

[0016] By being equipped with the oil blocking structure covering the transmission gear set inside the gear box, the oil splashed on the surface of the transmission gear set is prevented from splashing or flowing away when the gear rotates at high speed, the side baffle is arranged around the side of the transmission gear set to prevent the oil from flowing away from the side, through the design, the oil is firmly retained on the surface of the gear when the gear rotates at high speed, the gear can be fully lubricated at all times, thereby ensuring long-term stable operation, significantly prolonging the service life, and the structure also greatly reduces the risk of gear wear and damage caused by poor lubrication. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is a schematic diagram of the structure of the transmission gear set and the oil blocking structure assembled as a whole;

[0019] Figure 3 It is a schematic diagram of the structure of the transmission gear set and the oil blocking structure separated from each other;

[0020] Figure 4 It is an exploded schematic diagram of the internal structure of the gear box;

[0021] Figure 5 It is an axial side view of the oil blocking structure from the top view angle;

[0022] Figure 6 It is an axial side view of the oil blocking structure from the bottom view angle;

[0023] Figure 7 It is a sectional view of the utility model;

[0024] Figure 8 It is Figure 7 It is a structure enlarged view of part A;

[0025] Figure 9 It is a schematic diagram of the structure of the outer tube and the end cover separated from each other;

[0026] Figure 10 It is Figure 7 It is a structure enlarged view of part B;

[0027] Figure 11 It is Figure 7 It is a structure enlarged view of part C;

[0028] Figure 12 It is an exploded schematic diagram of the supporting transmission structure.

[0029] Reference numerals in the drawing:

[0030] 100 outer tube; 101 lead screw; 102 inner tube; 103 nut; 104 dustproof ring; 105 end cover; 106 support ring; 107 waterproof gasket; 108 sealing ring; 109 oil seal ring; 110 positioning bump; 111 bearing sleeve; 112 bearing bump; 113 upper end; 114 lower end; 115 fixed ring; 116 mounting groove; 117 plugging bolt; 118 oil injection hole; 119 oil guide nozzle; 120 oil guide groove; 121 connecting seat; 122 boss part; 123 flat ball bearing; 124 base; 125 shaft coupling; 126 mounting seat;

[0031] 200 drive assembly; 201 drive piece; 202 mounting box;

[0032] 300 gear box; 301 upper shell; 302 lower shell; 303 transmission gear set; 304 sealing gasket; 305 oil blocking structure; 306 second lip; 307 connecting bump; 308 first lip; 309 positioning column; 310 waterproof gasket; 311 positioning block; 312 sealing groove; 313 oil blocking plate; 314 side baffle; 315 hollow groove. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0034] As shown in Figures 1-6 The present application provides a solar electric push rod, comprising a drive assembly 200, a transmission assembly and a push rod assembly, the drive assembly 200 drives the push rod assembly to work through the transmission assembly, the transmission assembly comprises a gear box 300 and a transmission gear set 303 fitted inside the gear box 300, the inside of the gear box 300 is fitted with an oil blocking structure 305 covering the transmission gear set 303, so as to prevent the oil splashed on the surface of the transmission gear set 303 from splashing or losing when the gear rotates at high speed;

[0035] The gear box 300 comprises an upper shell 301 and a lower shell 302, the upper shell 301 and the lower shell 302 are closed to form a containing cavity for containing the transmission gear set 303, a sealing gasket 304 is arranged between the upper shell 301 and the lower shell 302, a first lip 308 is arranged around the periphery of the lower end of the upper shell 301, a positioning block 311 is arranged around the inner periphery of the lower end of the upper shell 301, the first lip 308 and the positioning block 311 have a gap therebetween to form a sealing groove 312, the sealing gasket 304 is arranged inside the sealing groove 312, a second lip 306 is arranged around the periphery of the upper end of the lower shell 302, the upper shell 301 and the lower shell 302 are closed, the first lip 308 and the second lip 306 are in contact to achieve sealing and waterproofing;

[0036] The oil blocking structure 305 comprises an oil blocking plate 313 and a side blocking plate 314, the side blocking plate 314 is arranged around the side of the transmission gear set 303 to prevent oil from flowing out from the side, the oil blocking plate 313 is arranged above the side blocking plate 314, the oil blocking plate 313 is above the transmission gear set 303, the shape and size of the oil blocking plate 313 and the containing cavity are matched with each other, the oil blocking plate 313 is provided with a connecting lug 307 connected with the upper shell 301 to fix the position of the oil blocking structure 305 in the gear box 300, in addition, the oil blocking plate 313 is provided with a hollow slot 315, so that the driving assembly 200 and the push rod assembly pass through the hollow slot 315 and are connected with the transmission gear set 303, the driving assembly 200 comprises a mounting box 202 and a driving member 201 arranged inside the mounting box 202, the driving member 201 is a conventional driving motor, the gear box 300 is provided with a positioning column 309 connected with the mounting box 202, and a waterproof gasket 310 is arranged between the mounting box 202 and the gear box 300;

[0037] The gear box 300 is provided with an outer tube 100, the outer tube 100 is a tubular structure with hollow inside and openings at both ends, an end cover 105 is arranged at the end of the outer tube 100 away from the transmission gear set 303, a through hole is formed in the center of the end cover 105, the push rod assembly comprises an inner tube 102, a lead screw 101 and a nut 103, the inner tube 102 is arranged inside the outer tube 100 and is in sliding connection with the outer tube 100, one end of the inner tube 102 passes through the through hole and is in sliding connection with the end cover 105, one end of the inner tube 102 is connected with the nut 103, the nut 103 is screwed on the lead screw 101, the transmission gear set 303 drives one end of the lead screw 101 to rotate, so that the nut 103 moves along the axial direction of the lead screw 101, and the nut 103 drives the inner tube 102 to make lifting movement inside the outer tube 100;

[0038] As Figures 7-9As shown, the outer tube 100 and the end cover 105 are provided with a protective structure to improve the sealing and waterproofing and stability between the outer tube 100 and the end cover 105, which includes a dustproof ring 104, a support ring 106, an oil seal ring 109, and a bearing sleeve 111. The dustproof ring 104 is a lip dustproof ring 104, the support ring 106 is a polytetrafluoroethylene support ring 106, the oil seal ring 109 is a Y-shaped oil seal ring 109, and the bearing sleeve 111 is a self-lubricating composite copper sleeve. The self-lubricating property of the self-lubricating composite copper sleeve eliminates the need for additional lubricant during operation, reducing maintenance costs. Meanwhile, the composite copper material has good wear resistance and thermal conductivity, which can ensure the efficient operation of the bearing sleeve 111.

[0039] The inner wall of the end cover 105 is sequentially provided with a first mounting groove 116, a second mounting groove 116, and a third mounting groove 116 from top to bottom. The dustproof ring 104 is fitted inside the first mounting groove 116 and tightly adheres to the outer wall of the inner tube 102 to prevent external dust from entering the inside of the outer tube 100. The support ring 106 is fitted inside the second mounting groove 116 and contacts the outer wall of the inner tube 102 to support and position the inner tube 102, ensuring the stable operation of the inner tube 102 inside the outer tube 100. The oil seal ring 109 is fitted inside the third mounting groove 116 and tightly adheres to the outer wall of the inner tube 102 to prevent lubricating oil from leaking. In addition, the oil seal ring 109 can further prevent external contaminants from entering the inside of the outer tube 100.

[0040] It also includes a fixing ring 115 for fitting the bearing sleeve 111. The top end of the fixing ring 115 is provided with a positioning protrusion 110 extending outward relative to the center of the fixing ring 115. The bottom end of the fixing ring 115 is provided with a supporting protrusion 112 extending inward relative to the center of the fixing ring 115. One end of the outer tube 100 is provided with a mounting groove 116 matching the diameter of the positioning protrusion 110. The fixing ring 115 is placed inside the outer tube 100 and fixed at the position of the mounting groove 116 of the outer tube 100 by the positioning protrusion 110. The bearing sleeve 111 is placed inside the fixing ring 115 and fixed inside the fixing ring 115 by the supporting protrusion 112, so that the inner wall of the bearing sleeve 111 contacts the outer wall of the inner tube 102, and the bearing sleeve 111 can normally play its role of supporting and reducing friction.

[0041] The end cover 105 includes an upper end portion 113 and a lower end portion 114. The bottom of the upper end portion 113 is provided with an inner recess, and the inner recess is fitted with a waterproof gasket 107. When the end cover 105 is installed and connected with the outer tube 100, the waterproof gasket 107 is clamped between the upper end portion 113 and the outer tube 100, forming an effective waterproof seal.

[0042] Meanwhile, the lower end 114 of the end cover 105 penetrates into the interior of the outer tube 100, and the outer wall of the lower end 114 is provided with a fourth mounting groove 116, and the sealing ring 108 is mounted in the fourth mounting groove 116, and the sealing ring 108 is in contact with the inner wall of the outer tube 100, thereby further enhancing the sealing performance between the end cover 105 and the outer tube 100, and preventing external moisture and impurities from entering the interior of the equipment from the connection between the end cover 105 and the outer tube 100;

[0043] As shown in Figure 10 The outer tube 100 is provided with at least one oil injection hole 118, and each oil injection hole 118 is provided with a plugging bolt 117 which is screwed with the oil injection hole 118, and the plugging bolt 117 is tightly connected with the oil injection hole 118 through the screw thread, so as to effectively plug the oil injection hole 118, and the inner tube 102 is provided with an oil injection part which is in communication with the inner cavity of the inner tube 102, and after the oil injection hole 118 and the oil injection part are accurately aligned in the axial direction by moving the inner tube 102, oil is injected, so that the oil flows into the interior of the inner tube 102 through the oil injection part;

[0044] The oil injection part comprises a guide oil nozzle 119 which is fixedly installed on the side wall of the inner tube 102, and the guide oil nozzle 119 is provided with a guide oil groove 120 which is in communication with the inner cavity of the inner tube 102, and the design of the guide oil groove 120 can ensure that the oil flows smoothly into the inner cavity of the inner tube 102, so that the oil is more effectively attached to the surface of the screw rod, and the oil injection efficiency is improved;

[0045] As shown in Figures 11-12 The outer tube 100 and the gear box 300 are provided with a support transmission structure, the outer side of the lead screw 101 is provided with a shaft coupling 125, the driving member 201 drives the transmission gear set 303 to rotate, the transmission gear set 303 drives the lead screw 101 to rotate through the shaft coupling 125, the inside of the support transmission structure is rotationally connected with the shaft coupling 125, so as to support the shaft coupling 125 and ensure the stability of the rotation of the lead screw 101, and the outside of the support transmission structure is connected with the outer tube 100, so as to fix the position of the support transmission structure on the outer tube 100;

[0046] The support transmission structure comprises a planar ball bearing 123 and a bearing seat, and the bearing seat wraps the planar ball bearing 123 to protect the planar ball bearing 123 and prevent external dust and impurities from entering the interior of the bearing and affecting the normal operation thereof;

[0047] The gear box 300 is equipped with a mounting seat 126 for fixing the bearing seat, the bearing seat comprises a connecting seat 121 and a base 124, the base 124 is arranged inside the mounting seat 126 and is fastened with the mounting seat 126 by bolts, so that the bearing seat is fixed on the gear box 300 as a whole, providing a stable mounting basis for the plane ball bearing 123, the bottom end of the connecting seat 121 is provided with a boss part 122, the inner wall of the boss part 122 is provided with internal threads for threaded connection with the base 124, the plane ball bearing 123 is arranged on the end face of the base 124, the connecting seat 121 is connected with the base 124 and wraps the plane ball bearing 123 inside, the bottom of the outer tube 100 is provided with a positioning groove matched with the boss part 122, and the inner wall of the outer tube 100 is provided with internal threads for threaded connection with the connecting seat 121, so that the bearing seat is fixed on the outer tube 100 by positioning and threaded connection, further ensuring the stable position of the supporting transmission structure, thereby further ensuring the smoothness of the rotation of the lead screw 101.

[0048] Compared with the conventional technology:

[0049] 1. By arranging the oil blocking structure 305 covering the transmission gear set 303 inside the gear box 300, the oil smeared on the surface of the transmission gear set 303 is prevented from splashing or leaking when the gear rotates at high speed, and the side baffle 314 is arranged around the side surface of the transmission gear set 303 to prevent the oil from leaking from the side surface, so that the oil is firmly retained on the surface of the gear when the gear rotates at high speed, the gear can be fully lubricated at all times, thereby ensuring its long-term stable operation, significantly prolonging the service life, and greatly reducing the risk of gear wear and damage caused by poor lubrication;

[0050] 2. By arranging the protective structure between the outer tube 100 and the end cover 105 to improve the sealing and waterproofness and stability between the outer tube 100 and the end cover 105, the dustproof ring 104 is arranged inside the first mounting groove 116 and tightly abuts against the outer wall of the inner tube 102 to prevent external dust from entering the inside of the outer tube 100, the support ring 106 is arranged inside the second mounting groove 116 and contacts the outer wall of the inner tube 102 to support and position the inner tube 102, ensuring the stable operation of the inner tube 102 in the outer tube 100, the oil seal ring 109 is arranged inside the third mounting groove 116 and tightly abuts against the outer wall of the inner tube 102 to prevent leakage of lubricating oil, and the inner wall of the bearing sleeve 111 contacts the outer wall of the inner tube 102, so that the bearing sleeve 111 can normally play its role of supporting and reducing friction;

[0051] 3. By setting the oil injection hole 118 on the outer tube 100 and the oil injection component on the inner tube 102, the oil injection component is the oil guide nozzle 119 fixedly installed on the side wall of the inner tube 102, the oil guide nozzle 119 is provided with the oil guide groove 120 in communication with the inner cavity of the inner tube 102, and each oil injection hole 118 is provided with the plugging bolt 117 threadedly connected therewith, the plugging bolt 117 is tightly connected with the oil injection hole 118 through the thread, so as to effectively plug the oil injection hole 118, and after moving the inner tube 102 to accurately align the oil injection hole 118 with the oil guide nozzle 119 in the axial direction, injecting the oil, so that the oil flows into the inner tube 102 through the oil guide groove 120, the design of the oil guide groove 120 can ensure that the oil flows smoothly into the inner cavity of the inner tube 102, so that the oil is more effectively attached to the surface of the screw rod, and the oil injection efficiency is improved;

[0052] 4. By setting the support transmission structure between the outer tube 100 and the gear box 300, the inside of the support transmission structure is rotatably connected with the shaft coupling 125, so as to support the shaft coupling 125 and ensure the stability of the rotation of the screw rod 101, and the outside of the support transmission structure is connected with the outer tube 100, so as to fix the position of the support transmission structure on the outer tube 100. In addition, compared with the traditional electric push rod, the planar ball bearing 123 is first placed on the end face of the base 124, the connecting seat 121 is connected with the base 124 and wraps the planar ball bearing 123 inside, and then the bearing seat is fixed on the outer tube 100 through positioning and threaded connection, so as to realize the removal of the planar ball bearing 123 from the internal space of the gear box 300, reduce the volume and weight of the gear box 300, and further reduce the overall cost, and eliminate the gap problem that may be caused by the traditional bolt connection, and avoid the decrease of precision and reliability caused by the loosening of the bolt, so as to improve the transmission precision of the push rod from the root, and significantly enhance the performance and reliability of the whole mechanical system.

[0053] It is obvious for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be regarded as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be regarded as limiting the claims involved.

Claims

1. A solar electric trolley, comprising a driving assembly, a transmission assembly and a trolley assembly, the driving assembly drives the trolley assembly to work through the transmission assembly, the transmission assembly comprises a gear box and a transmission gear set fitted inside the gear box, characterized in that, The gear box is provided with an oil blocking structure covering the transmission gear set to prevent oil splashed on the surface of the transmission gear set from splashing or flowing away when the gear rotates at high speed.

2. A solar powered push-reel according to claim 1, wherein, The oil blocking structure comprises an oil blocking plate and a side blocking plate arranged around the side of the transmission gear set to prevent oil from flowing away from the side.

3. A solar powered motorized push rake according to claim 2, wherein, The oil blocking plate is arranged above the side blocking plate and above the transmission gear set, and the oil blocking plate is provided with a hollow slot through which the driving assembly and the push rod assembly pass and are connected with the transmission gear set.

4. A solar powered motorized push rake according to claim 3, wherein, The gear box comprises an upper shell and a lower shell, and the upper shell and the lower shell are closed to form a containing cavity for containing the transmission gear set.

5. A solar powered motorized push rake according to claim 4, wherein, The upper shell and the lower shell are provided with a sealing gasket, and the lower end of the upper shell is provided with a first lip around the periphery, and the lower end of the upper shell is provided with a positioning block around the inner periphery, and the first lip and the positioning block have a gap to form a sealing groove, and the sealing gasket is arranged in the sealing groove.

6. A solar powered motorized push rake according to claim 1, wherein, The gear box is provided with an outer tube, and the push rod assembly comprises an inner tube, a lead screw and a nut, the inner tube is arranged in the outer tube and is connected with the outer tube in a sliding manner, one end of the inner tube is connected with the nut, the nut is screwed on the lead screw, and the transmission gear set drives one end of the lead screw to rotate, so that the nut moves along the axial direction of the lead screw, and the nut drives the inner tube to move up and down in the outer tube.

7. A solar powered motorized push rake according to claim 6, wherein, The end of the outer tube away from the transmission gear set is provided with an end cover, the center of the end cover is provided with a through hole, one end of the inner tube passes through the through hole and is connected with the end cover in a sliding manner, and a protection structure is arranged between the outer tube and the end cover to improve the sealing and waterproof performance and stability between the outer tube and the end cover.

8. A solar powered motorized push rake according to claim 6, wherein, The outer tube is provided with at least one oil injection hole and a plugging bolt, the plugging bolt is threadedly connected with the oil injection hole to plug the oil injection hole, and the inner tube is provided with an oil injection part, the oil injection part is in communication with the inner cavity of the inner tube, the oil injection hole is aligned with the oil injection part and is injected with oil, so that the oil flows into the inner tube through the oil injection part.

9. A solar powered motorized push rake according to claim 6, wherein, The outer tube and the gear box are provided with a supporting transmission structure, the outer side of the lead screw is provided with a shaft coupling, the supporting transmission structure is connected with the shaft coupling to assist in maintaining the coaxiality of the shaft coupling and the lead screw, and the supporting transmission structure is connected with the outer tube.

10. The solar powered push mower of claim 1, wherein, The driving assembly comprises a mounting box and a driving member arranged in the mounting box, the gear box is provided with a positioning column connected with the mounting box, and a waterproof gasket is arranged between the mounting box and the gear box.

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