Multi-cylinder tandem type lifting mechanism
Through the multi-cylinder series lifting mechanism, the connecting rod assembly and driving motor drive the worm to rotate, and the synchronous lifting and movement of multiple lifting and electric cylinders is achieved, solving the problem of difficulty in arranging multiple sets of lifting and driving equipment under the conditions of narrow height space, and achieving uniform lifting of items.
Patent Information
- Application Number
- CN202420894837.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-26
- Publication Date
- 2025-04-25
- Estimated Expiration
- 2034-04-26
AI Technical Summary
During the production process, there is a problem that the height space below the items that need to be lifted is narrow, and it is difficult to arrange multiple sets of lifting and driving equipment with driving motors, especially for larger items.
Using a multi-cylinder series lifting mechanism, through a plurality of lifting electric cylinders and connecting rod components arranged in sequence, the worm is driven to rotate by a driving motor, and the power is transmitted through the worm gear and the screw nut transmission mechanism, so as to realize the synchronous lifting and movement of the multiple lifting electric cylinders.
Under the condition of narrow height space, the driving motor is set to drive multiple lifting and lowering cylinders to perform synchronous lifting and lowering movements under the condition of narrow height space, and the load distribution is more even.
Smart Images
Figure CN222795080U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of lifting equipment, in particular to a multi-cylinder series lifting mechanism. Background Art
[0002] There are many occasions in production activities where objects need to be lifted and moved. At this time, lifting drive equipment is often used to drive the objects to be lifted and moved. The lifting drive equipment often includes a drive motor and a lifting transmission mechanism. The drive motor converts the rotational motion into the lifting motion of the transmission mechanism, thereby driving the objects to be lifted and lowered. However, due to various reasons, in the actual production process, there is a problem that the height space below the objects to be lifted is narrow and the space for arranging the lifting drive equipment is limited. For some larger objects, multiple sets of lifting drive equipment need to be set up to support the objects to drive the objects to be lifted and lowered, so that the load distribution is more uniform. Generally, the size of the driving motor is large, and the space under the object is limited. It is difficult to arrange multiple sets of lifting drive equipment with drive motors in the space under the object to drive the objects to be lifted and lowered. Utility Model Content
[0003] The utility model provides a multi-cylinder series lifting mechanism to solve the technical problem in the prior art that it is difficult to arrange multiple sets of lifting drive devices with drive motors under large-sized objects with narrow height space below to lift the objects.
[0004] In order to solve the above problems, the utility model provides a multi-cylinder series lifting mechanism adopting the following technical solutions:
[0005] A multi-cylinder series lifting mechanism, comprising:
[0006] A plurality of lifting electric cylinders are arranged in sequence, and the lifting electric cylinders include a worm gear transmission mechanism and a screw nut transmission mechanism, the worm is used to drive the worm wheel to rotate in a horizontal plane, the screw nut transmission mechanism has a rotary power input end and a vertically telescopic power output end, the worm wheel is connected to the power input end of the screw nut transmission mechanism to drive the power output end of the screw nut transmission mechanism to perform a lifting motion to lift objects;
[0007] The worm is located beside the screw-nut transmission mechanism, and any two adjacent worms are connected by a connecting rod assembly;
[0008] The multi-cylinder serial lifting mechanism also includes a driving motor disposed on at least one side of the plurality of lifting electric cylinders arranged in sequence, and the driving motor is connected to a worm gear in the lifting electric cylinder located at the end.
[0009] The beneficial effect of the above technical solution is that multiple lifting electric cylinders are connected through a connecting rod assembly. It is only necessary to set a driving motor at the ends of the multiple lifting electric cylinders arranged in sequence to drive the worm in the lifting electric cylinder at the end to rotate, so that power can be transmitted to each lifting electric cylinder. When in use, the driving motor can be set next to a large-sized object with a narrow height space below, and the lifting electric cylinders with lower heights can be arranged below the object. Starting the driving motor can drive the lifting and lowering movements of the multiple lifting electric cylinders to lift the object.
[0010] Furthermore, the connecting rod assembly includes a connecting rod and couplings connected to both ends of the connecting rod, and the couplings at both ends of the connecting rod are respectively connected to two worm gears located on both sides of the connecting rod.
[0011] The beneficial effect of the above technical solution is that the coupling is used to connect the worm and the connecting rod, so that the power transmission is more stable and reliable.
[0012] Furthermore, the nut is the power input end of the screw-nut transmission mechanism, the screw is the power output end of the screw-nut transmission mechanism, the worm gear is mounted on the outside of the nut and cooperates with the nut to prevent rotation, and the nut drives the screw to perform lifting and lowering movements.
[0013] The beneficial effect of the above technical solution is that the screw rod is driven to move in the up and down directions by driving the nut to rotate, rather than driving the screw rod to rotate to drive the nut to move in the up and down directions, so that the nut can be made shorter.
[0014] Furthermore, the worm wheel and the nut are assembled to prevent rotation by means of a limiting protrusion and a limiting groove that fit in with each other.
[0015] Furthermore, the lifting electric cylinder includes a housing, the worm gear transmission mechanism is arranged on the inner side of the housing, the nut is rotatably connected to the inner side of the housing, and the top end of the screw rod extends upward to the outside of the housing.
[0016] The beneficial effect of the above technical solution is that the lifting electric cylinder includes a housing for protecting the internal worm gear transmission mechanism and the screw nut transmission mechanism.
[0017] Furthermore, the nut includes a threaded section, a connecting section, and an assembly section which are connected in sequence from top to bottom, the threaded section is used to spirally cooperate with the screw rod, the connecting section is used to be inserted into the mounting hole, the limiting protrusion or limiting groove is provided on the outer side wall of the connecting section, and the assembly section is rotatably connected to the housing through a bearing.
[0018] Furthermore, the casing includes a shell and an upper cover, the upper cover is provided with a first limiting step, the outer side of the threaded section is provided with a protruding second limiting step, and the first limiting step is used to block the second limiting step in the up and down directions to limit the upward movement of the nut.
[0019] The beneficial effect of the above technical solution is that the first limiting step and the second limiting step block each other and are used to tighten the nut and limit the movement of the nut in the up and down directions.
[0020] Furthermore, at least two limit slide grooves are arranged at intervals in the horizontal direction and extend in the up-down direction in the screw rod, and at least two limit slide rods are arranged at intervals in the horizontal direction and extend in the up-down direction in the inner side of the nut. The limit slide rods are inserted in the corresponding limit slide grooves to limit the rotation of the screw rod.
[0021] The beneficial effect of the above technical solution is that at least two limiting slide bars are inserted into two limiting slide grooves correspondingly to limit the rotation of the screw rod, and the limiting method is simple. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] By reading the detailed description below with reference to the accompanying drawings, the above and other purposes, features and advantages of the exemplary embodiments of the present invention will become easy to understand. In the accompanying drawings, several embodiments of the present invention are shown in an exemplary and non-limiting manner, and the same or corresponding reference numerals represent the same or corresponding parts, wherein:
[0023] Figure 1 A schematic diagram of the structure of a multi-cylinder series lifting mechanism provided by the utility model;
[0024] Figure 2 A schematic diagram of the structure of a lifting electric cylinder in a multi-cylinder series lifting mechanism provided by the utility model;
[0025] Figure 3 A top view of a lifting electric cylinder in a multi-cylinder series lifting mechanism provided by the utility model;
[0026] Figure 4 for Figure 3 Sectional view at AA in the middle;
[0027] Figure 5 for Figure 3 Sectional view at the middle BB;
[0028] Figure 6 for Figure 3 Cross-sectional view at CC.
[0029] Description of reference numerals:
[0030] 1. Support beam; 2. Drive motor; 3. Reducer; 4. Coupling; 5. Connecting rod; 6. Lifting electric cylinder; 7. Housing; 8. Upper cover; 801. First limiting step; 9. Worm; 10. Screw; 11. Worm wheel; 12. First bearing; 13. Nut; 1301. Threaded section; 1302. Connecting section; 1303. Assembly section; 1304. Second limiting step; 14. Second bearing; 15. Limiting slide rod; 16. Limiting slide groove. DETAILED DESCRIPTION
[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Those skilled in the art should know that the embodiments described below are part of the embodiments of the present disclosure, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.
[0032] The following is one embodiment of a multi-cylinder tandem lifting mechanism provided by the utility model:
[0033] like Figure 1 , Figure 2 and Figure 3 As shown, a multi-cylinder serial lifting mechanism is installed on a support beam 1 below the lifted object. The multi-cylinder serial lifting mechanism includes a plurality of lifting electric cylinders 6 arranged in sequence. The lifting electric cylinders 6 include a housing, a worm gear transmission mechanism, and a screw nut transmission mechanism. The housing includes a housing 7 and an upper cover 8 connected to the top of the housing 7 by connecting bolts. The worm gear transmission mechanism is arranged in the housing 7. The worm wheel 11 is arranged horizontally. Both ends of the worm 9 extend to the outside of the housing 7. Every two adjacent worms 9 are connected by a connecting rod assembly. The connecting rod assembly includes a connecting rod 5 and two couplings 4 respectively connected to the two ends of the connecting rod 5. The two couplings 4 at the two ends of the connecting rod 5 are respectively connected to the two worms 9 on both sides of the connecting rod 5, so that the worms 9 in the plurality of groups of lifting electric cylinders 6 arranged in sequence are connected in transmission.
[0034] like Figure 4 , Figure 5 and Figure 6As shown, a through hole is provided in the middle of the worm wheel 11 and passes through it from top to bottom, and the nut 13 in the screw nut transmission mechanism is inserted in the through hole. The nut 13 includes a threaded section 1301, a connecting section 1302 and an assembly section 1303 arranged from top to bottom, and a screw 10 is inserted in the inner side of the nut 13, and the threaded section 1301 is located above the worm wheel 11 and is spirally connected to the screw 10. The connecting section 1302 is inserted in the through hole on the worm wheel 11, and a limiting protrusion extending in the up-down direction is provided on the inner side wall of the through hole, and a limiting groove extending in the up-down direction is provided on the outer side wall of the connecting section 1302, and the limiting protrusion is inserted in the limiting groove, so that the nut 13 is connected to the worm wheel 11 and cannot rotate relative to each other. The bottom wall of the housing 7 is provided with a mounting groove with an opening facing upward, in which a first bearing 12 is embedded, and the assembly section 1303 is inserted into the inner hole of the first bearing 12 so that the assembly section 1303 can be rotatably arranged on the bottom wall of the housing 7 .
[0035] The upper cover 8 is provided with a receiving groove with an opening facing downward, the groove bottom plate of the receiving groove forms a first limiting step 801, the bottom surface of the first limiting step 801 forms a first vertical limiting surface, the outer wall of the threaded section 1301 is provided with a protruding second limiting step 1304, and the top surface of the second limiting step 1304 forms a second vertical limiting surface. The second bearing 14 is embedded in the receiving groove, the first vertical limiting surface is pressed on the top surface of the outer ring of the second bearing 14, and the second vertical limiting surface is pressed on the bottom surface of the inner ring of the second bearing 14, so that the first limiting step 801 is blocked by the second bearing 14 and the second limiting step 1304 in the up and down directions, thereby limiting the movement of the nut 13 in the up and down directions.
[0036] Two limit slide grooves 16 extending in the up-down direction are provided in the screw rod 10. The two limit slide grooves 16 are arranged at intervals along the radial direction of the screw rod 10. Two limit slide rods 15 arranged at intervals are connected to the bottom wall of the above-mentioned shell 7. The limit slide rod 15 is a long rod bolt, which is threadedly connected to the bottom wall of the shell 7. The bolt heads of the two long rod bolts are respectively inserted in the two limit slide grooves 16, thereby limiting the rotation of the screw rod 10. The top end of the screw rod 10 passes through the upper cover 8 and extends to the outside of the casing. The top end of the screw rod 10 is used to support the bottom surface of the object to be lifted.
[0037] A driving motor 2 is provided on the side of the object to be lifted, and a reducer 3 is connected to the output shaft end of the driving motor 2. The output end of the reducer 3 is connected to a worm 9 in a lifting electric cylinder 6 located at the end through a connecting rod 5 and a coupling 4, thereby transmitting the power of the driving motor 2 to the worm 9 located at the end.
[0038] When the utility model is in use, the drive motor 2 is started, the drive motor 2 outputs power and is transmitted to the worm 9 in each lifting electric cylinder 6 through each connecting rod 5 and each coupling 4, the worm 9 rotates to drive the worm wheel 11 to rotate, the worm wheel 11 drives the nut 13 to rotate, and the nut 13 drives the screw rod 10 to move in the up and down direction, thereby lifting the objects above the screw rod 10.
[0039] The utility model uses a connecting rod assembly and a coupling to connect the lifting electric cylinders. Only by arranging a driving motor beside a plurality of lifting electric cylinders arranged in sequence can the lifting electric cylinders be driven to move simultaneously to lift objects. The utility model is suitable for being arranged below objects of larger size and with limited height space below.
[0040] In this embodiment, the nut is the power input end of the screw-nut transmission mechanism, and the screw is the power output end of the screw-nut transmission mechanism. The screw is driven to rotate to move the screw in the up and down directions. In other embodiments, the screw is the power input end of the screw-nut transmission mechanism, and the nut is the power output end of the screw-nut transmission mechanism. At this time, it is necessary to limit the movement of the screw in the up and down directions and limit the circumferential rotation of the nut, so that the screw can drive the nut to move up and down when it rotates.
[0041] In this embodiment, two horizontally spaced limit slots are provided on the screw rod, and two horizontally spaced limit slide rods are provided in the shell, so that the two limit slide rods are inserted into the corresponding limit slots to achieve the purpose of stopping the screw rod from rotating. In other embodiments, only one limit slot is provided in the screw rod, and the cross-section of the limit slot is polygonal. Only one limit slide rod is provided in the shell, and the cross-section of the limit slide rod is a polygon corresponding to the limit slot. The limit slide rod is inserted into the limit slot to achieve the purpose of stopping the screw rod from rotating.
[0042] In this embodiment, a limiting groove is provided on the connecting section of the nut, and a limiting protrusion is provided on the inner wall of the through hole in the worm wheel. The limiting protrusion is inserted into the limiting groove to realize a non-rotating connection between the nut and the worm wheel. In other embodiments, the limiting protrusion is arranged on the outer wall of the connecting section in the nut, and the limiting groove is arranged on the inner wall of the through hole in the worm wheel.
Claims
1. A multi-cylinder series lifting mechanism, characterized in that: include: A plurality of lifting electric cylinders are arranged in sequence, and the lifting electric cylinders include a worm gear transmission mechanism and a screw nut transmission mechanism, the worm is used to drive the worm wheel to rotate in a horizontal plane, the screw nut transmission mechanism has a rotary power input end and a vertically telescopic power output end, the worm wheel is connected to the power input end of the screw nut transmission mechanism to drive the power output end of the screw nut transmission mechanism to perform a lifting motion to lift objects; The worm is located beside the screw-nut transmission mechanism, and any two adjacent worms are connected by a connecting rod assembly; The multi-cylinder serial lifting mechanism also includes a driving motor disposed on at least one side of the plurality of lifting electric cylinders arranged in sequence, and the driving motor is connected to a worm gear in the lifting electric cylinder located at the end.
2. A multi-cylinder tandem lifting mechanism according to claim 1, characterized in that: The connecting rod assembly comprises a connecting rod and couplings connected at both ends of the connecting rod, and the couplings at both ends of the connecting rod are respectively connected to two worm gears located at both sides of the connecting rod.
3. The multi-cylinder tandem lifting mechanism according to claim 1, characterized in that: The nut is the power input end of the screw-nut transmission mechanism, the screw is the power output end of the screw-nut transmission mechanism, the worm gear is mounted on the outside of the nut and cooperates with the nut to stop rotation, and the nut drives the screw to perform lifting and lowering movements.
4. A multi-cylinder tandem lifting mechanism according to claim 3, characterized in that: The worm wheel and the nut are assembled to prevent rotation by means of a limiting protrusion and a limiting groove that are adapted and inserted.
5. A multi-cylinder tandem lifting mechanism according to claim 4, characterized in that: The lifting electric cylinder comprises a casing, the worm gear transmission mechanism is arranged on the inner side of the casing, the nut is rotatably connected to the inner side of the casing, and the top end of the screw rod extends upward to the outside of the casing.
6. A multi-cylinder tandem lifting mechanism according to claim 5, characterized in that: The nut includes a threaded section, a connecting section, and an assembly section which are sequentially connected from top to bottom. The threaded section is used to spirally cooperate with the screw rod. The connecting section is used to be inserted into the worm gear. The limiting protrusion or limiting groove is provided on the outer side wall of the connecting section. The assembly section is rotatably connected to the housing through a bearing.
7. The multi-cylinder tandem lifting mechanism according to claim 6, characterized in that: The casing comprises a shell and an upper cover, the upper cover is provided with a first limiting step, the outer side of the threaded section is provided with a protruding second limiting step, the first limiting step is used to block the second limiting step in the up and down directions to limit the nut from moving upward.
8. A multi-cylinder tandem lifting mechanism according to any one of claims 2 to 7, characterized in that: At least two limit slide grooves are arranged at intervals in the horizontal direction and extend in the up-down direction in the screw rod, and at least two limit slide rods are arranged at intervals in the horizontal direction and extend in the up-down direction on the inner side of the nut. The limit slide rods are inserted in the corresponding limit slide grooves to limit the rotation of the screw rod.