Lifting driving assembly structure of tripod and tripod

Abstract

The utility model relates to the technical field of laser instrument supporting equipment, in particular to a tripod lifting driving assembly structure and a tripod, the driving assembly structure comprises a sleeve, a motor base and a motor shell, the motor base is detachably connected to one end of the sleeve, a motor is detachably connected to the motor base, and the motor shell is detachably connected to the other end of the sleeve. The motor shell is detachably connected to the motor base and covers the motor. According to the machine base, the motor installed on the machine base can be connected with the sleeve more stably, the coaxiality between the motor and the lead screw can be adjusted when the motor is installed, and it is guaranteed that the lead screw rotates stably; all parts of the driving structure are detachably connected with one another, so that the motor driving part can be quickly matched and mounted; the internal motor can be conveniently disassembled for maintenance even if the internal motor breaks down, and the installation matching relation of other structures is not affected; and the pipe sleeve, the motor shell, the motor base and the like are parts with single structures, so that the production, processing and forming are more convenient, the production cost is lower, and the popularization is more facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to laser instrument support equipment technical field, specifically provide a lifting drive assembly structure and tripod of tripod. BACKGROUND

[0002] Laser instrument includes laser level, laser sweep level instrument, laser line projector etc., is used in people's daily life in decoration, decoration etc. engineering. These laser measuring instruments generally will be equipped with tripod or other support device when using, for supporting fixed laser measuring instrument, thereby can effectively avoid the shaking, jitter etc. of laser instrument cause measurement error.

[0003] Because the tripod of traditional support laser instrument is generally through manual height adjustment, however, manual adjustment error is big, and operation is also time -consuming and labor -intensive. So the prior art has had the height adjustment tripod controlled by motor, such as patent CN 203309468 U, passes gear and rack structure transmission and controls the lifting rod lifting. But this motor is arranged in the side of the lifting rod with rack, and the transmission mode is driven by meshing gear rotation to lift the lifting rod, although it can save manpower and improve the adjustment efficiency, but its height adjustment precision is still insufficient, and it still causes measurement error of laser instrument.

[0004] Therefore, in order to further improve the adjustment precision, the relevant research institutions propose to use screw, nut structure instead of gear and rack structure for lifting. The rotation of the screw needs to be driven by the motor, and the motor is arranged beside the screw to drive the screw to rotate, which will inevitably need a multi-stage transmission structure to transmit the torque output by the motor to the screw, however, multi-stage transmission often also reduces the precision. The motor and the screw are coaxially arranged, and the precision loss caused by multi-stage transmission is avoided, but the screw needs to be avoided from shaking during self-rotation to ensure the precision of the screw transmission. The prior art is difficult to guarantee the coaxiality of the motor and the screw, and it is difficult to avoid the generation of shaking during the rotation of the screw, thereby affecting the precision of the screw, and also lacking stability of the laser instrument installed on the lifting rod during the lifting process of the lifting rod. UTILITY MODEL CONTENTS

[0005] In order to solve the above problems, the utility model provides a driving assembly structure and tripod of tripod for coaxial assembly and installation of motor and screw.

[0006] The technical scheme of the utility model is as follows:

[0007] A lifting drive assembly structure of tripod, including sleeve, motor seat and motor shell, the motor seat is detachably connected to one end of the sleeve, the motor seat is detachably connected with the motor, and the motor shell is detachably connected to the motor seat and covers the motor.

[0008] In this scheme, the motor base can make the motor installed above more stable and connected with the sleeve, and through the additional motor base, a special installation base is provided for the motor, which ensures the coaxiality between the motor and the lead screw during installation, and further ensures the stability of the rotation of the lead screw; and the components of the driving structure are detachably connected with each other, and do not need to be integrally formed with the sleeve as the guide shell of the lifting rod, and when installed, the components can be connected in sequence to realize the quick and convenient installation of the motor driving part; the internal motor can be easily disassembled for maintenance without affecting the installation and cooperation relationship of other structures; and the sleeve, the motor shell and the motor base are single structural parts, which are more convenient for production and molding, have lower production cost and are more conducive to popularization.

[0009] Preferably, the motor base comprises a flange ring disc, a first connecting part and a second connecting part connected with each other, and the flange ring disc is arranged between the first connecting part and the second connecting part. The first connecting part is used for detachably connecting the sleeve, the second connecting part is used for detachably connecting the motor shell, and the flange ring disc is used for connecting the motor,

[0010] Preferably, the first connecting part comprises a tubular positioning cylinder, one end of the sleeve is matched with the cylinder diameter of the positioning cylinder, the first connecting part can be slidably inserted into the sleeve, and the positioning cylinder is coaxial with the sleeve. By sliding the first connecting part into the sleeve, the sleeve and the motor base are connected, which can effectively reduce the shaking between the motor base and the sleeve, and further ensure the stability of the motor; and the motor base is used for installing the motor, and the motor base is coaxial with the sleeve, so that the motor installed on the motor base is coaxial with the lead screw inserted in the sleeve, avoiding the shaking of the lead screw.

[0011] Preferably, the positioning cylinder is a cylindrical structure, and the connection between the sleeve and the positioning cylinder is also a cylindrical structure, the two cylindrical side walls can be fully matched, and the coaxiality of the cylindrical structure can be ensured through finishing during production and manufacturing, so as to further ensure the coaxiality between the motor installed therein and the lead screw.

[0012] Preferably, a plurality of bolt holes are arranged on the first connecting part, and a plurality of holes are arranged on the wall of the sleeve and matched with the bolt holes; or, inner threads and outer threads matched with each other are arranged on the first connecting part and the sleeve

[0013] In this scheme, the positioning bolt is inserted into the bolt hole on the first connecting part through the hole on the wall of the sleeve, so as to realize the transverse locking between the sleeve and the motor base. The threaded connection is also efficient and quick.

[0014] Preferably, the inner wall of the first connecting part is provided with a vertical plane, and the threaded hole is arranged along the plane; by arranging the inner wall of the first connecting part with a plane, the threaded hole is thickened inwardly, without affecting the fit between the pipe wall of the first connecting part and the inner wall of the sleeve, the connection strength between the sleeve and the motor base is improved.

[0015] Meanwhile, when the motor needs to control the rotation of the lead screw to control the height adjustment of the tripod, in the above structure, the motor is arranged on the flange ring disc, and the motor output end is in the first connecting part, so it is not easy to lock the shaft coupling between the lead screw and the motor output end. Therefore, preferably, a strip-shaped through hole is arranged on the first connecting part, and a screwdriver can directly extend into the strip-shaped through hole to tighten the shaft coupling.

[0016] Preferably, the second connecting part is provided with a ring groove in the circumferential direction, and the motor shell comprises two half shells, which are connected by bolts at one end to form a cavity covering the motor, and at the other end to form a sleeve ring matched with the ring groove of the second connecting part. The ring groove can be used to connect and position the motor shell to prevent the motor shell from falling off. The convex ring on the sleeve ring and the ring groove on the second connecting part are matched in number, thickness and diameter, etc. The convex ring is embedded in the ring groove, which can fix the motor shell on the motor base. Since the motor shell is composed of two half shells, the two half shells can be separated by removing the bolts, thereby realizing the detachable connection of the motor shell and the motor base.

[0017] A tripod comprises a connecting base and a storable supporting leg connected to the connecting base, characterized in that it further comprises the lifting drive assembly structure of the tripod as described above, the upper end of the sleeve is connected to the connecting base, further comprising a lifting pipe, a lead screw and a nut matched with the lead screw, the lead screw is arranged in the lifting pipe, the lifting pipe is fixedly connected with the nut, and the upper end of the lifting pipe extends out of the connecting base; the motor is in transmission connection with the lead screw for driving the lifting pipe to lift.

[0018] The tripod with the above structure ensures the stability and accuracy of the electric control lifting, and can be conveniently combined and installed during production and installation. Meanwhile, the components are independent and detachably connected, the manufacturing difficulty is low, and the later repair and maintenance can be more conveniently carried out.

[0019] Since the motor needs to control the rotation of the lead screw to control the height adjustment of the tripod, in the above structure, the higher the height adjusted by the rotation of the lead screw, the higher the center of gravity of the top laser instrument, which will cause the tripod to become more and more unstable. In order to improve this problem, preferably, the lifting pipe, the lead screw and the nut matched with the lead screw are further included, the lead screw is arranged in the lifting pipe, the lifting pipe is fixedly connected with the nut, the lifting pipe comprises an inner pipe and an outer pipe, the inner pipe is in clearance fit with the lead screw, and the outer pipe is in clearance fit with the sleeve.

[0020] In this scheme, the inner tube of the lifting pipe is in clearance fit with the lead screw, so that the lead screw has no space to deviate in the inner tube when the lifting pipe is stable, thereby avoiding the shaking of the lead screw when rotating, ensuring the stability of the motor driving the lead screw to rotate and the precision of the lead screw rotating to adjust the height. The outer tube of the lifting pipe is in clearance fit with the smallest diameter in the sleeve, the sleeve realizes radial positioning of the outer tube, reduces the shaking of the lifting pipe when lifting, so that the lifting pipe is always sleeved by the sleeve during the lifting process of the whole tripod, cooperates with the lead screw in the lifting pipe, and eliminates the gap and interval in the part of the lifting pipe in the sleeve as much as possible, avoids the shaking of the lifting pipe, and maintains the strength and stability of the lifting pipe.

[0021] Preferably, the top of the lifting pipe is provided with a mounting table for placing instruments.

[0022] The utility model discloses the beneficial effects of:

[0023] The motor seat can make the motor installed on the upper part and the sleeve more stable, and by additionally arranging the motor seat to provide a special mounting base for the motor, the coaxiality between the motor and the lead screw can be guaranteed, and the stability of the lead screw rotating is further improved. The components of the driving structure are detachably connected with each other, and do not need to be integrally formed with the sleeve as the lifting rod guide shell, so that the motor driving part can be quickly and conveniently installed by sequentially connecting the components. The internal motor can be conveniently disassembled for maintenance, and the installation and cooperation relationship of other structures is not affected. The sleeve, the motor shell and the motor seat are single structural parts, and are more convenient to produce and form, and have lower production cost, and are more conducive to popularization. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical scheme of the present application, the following will briefly introduce the drawings needed to be used in the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can obtain other drawings according to these drawings without any creative effort.

[0025] Figure 1 It is a front view of the tripod of the utility model;

[0026] Figure 2 It is a front view of the tripod of the utility model; Figure 1 It is an enlarged view of A in the utility model;

[0027] Figure 3 It is a sectional view of the sleeve of the utility model;

[0028] Figure 4 It is a sectional view of the sleeve of the utility model;

[0029] In the above-mentioned drawings, the corresponding reference signs are shown as follows:

[0030] 1 - sleeve, 2 - motor base, 201 - first connecting part, 202 - second connecting part, 203 - flange ring disc, 204 - ring groove, 205 - long strip through hole, 206 - threaded hole, 3 - motor shell, 301 - half shell, 302 - convex ring, 4 - motor, 5 - control panel, 6 - lifting pipe, 601 - inner pipe, 602 - outer pipe, 7 - lead screw, 8 - nut, 9 - coupling, 10 - leg, 11 - connecting seat. DETAILED DESCRIPTION

[0031] The technical scheme of the present application is clearly and completely explained by the specific implementation of the embodiments of the present application in combination with the drawings.

[0032] Embodiment one:

[0033] As shown in a lifting drive assembly structure of a tripod, comprising a sleeve 1, a motor base 2 and a motor shell 3, the motor base 2 is detachably connected to one end of the sleeve 1, the motor 4 is detachably connected to the motor base 2, and the motor shell 3 is detachably connected to the motor base 2 and covers the motor 4. Figure 2 Specifically, as shown in the drawings, the motor base 2 comprises a first connecting part 201 and a second connecting part 202 connected together, and a flange ring disc 203 is arranged between the first connecting part 201 and the second connecting part 202, the flange ring disc 203 is used for bolt connection of the motor 4, the motor 4 is detachably connected below the lead screw, and the lead screw is coaxially connected with the motor 4 more conveniently, and the motor 4 is connected to the motor base 2 stably through the flange ring disc 203.

[0034] Figure 4 The first connecting part 201 comprises a positioning cylinder, the first connecting part 201 is slidably inserted into the sleeve 1 along the inner wall of the sleeve 1 through the positioning cylinder, a plurality of bolt holes are arranged on the first connecting part 201, and a hole corresponding to the bolt hole is arranged on the wall of the sleeve 1. By slidingly inserting the first connecting part 201 into the sleeve 1, the coaxiality of the sleeve 1 and the first connecting part 201 can be ensured through finish machining when the sleeve 1 and the first connecting part 201 are produced and manufactured, the coaxiality of the flange ring disc 203 and the motor base 2 can also be ensured through finish machining when the flange ring disc 203 is integrally formed with the motor base, a plurality of flange threaded holes are finished on the flange ring disc 203, the motor can be accurately installed on the flange ring disc, and the lead screw 7 is arranged in the sleeve 1 and should also be coaxially arranged with the sleeve 1, which ensures the coaxiality and accuracy of the motor assembled on the sleeve 1 and the lead screw 7.

[0035] The first connecting part 201 comprises a positioning cylinder, the first connecting part 201 is slidably inserted into the sleeve 1 along the inner wall of the sleeve 1 through the positioning cylinder, a plurality of bolt holes are arranged on the first connecting part 201, and a hole corresponding to the bolt hole is arranged on the wall of the sleeve 1. By slidingly inserting the first connecting part 201 into the sleeve 1, the coaxiality of the sleeve 1 and the first connecting part 201 can be ensured through finish machining when the sleeve 1 and the first connecting part 201 are produced and manufactured, the coaxiality of the flange ring disc 203 and the motor base 2 can also be ensured through finish machining when the flange ring disc 203 is integrally formed with the motor base, a plurality of flange threaded holes are finished on the flange ring disc 203, the motor can be accurately installed on the flange ring disc, and the lead screw 7 is arranged in the sleeve 1 and should also be coaxially arranged with the sleeve 1, which ensures the coaxiality and accuracy of the motor assembled on the sleeve 1 and the lead screw 7.

[0036] ​The detachable connection of the sleeve 1 and the motor base 2 also effectively reduces the shaking between the motor base 2 and the sleeve 1, further ensuring the stability of the motor 4.

[0037] Meanwhile, the transverse locking between the sleeve 1 and the motor base 2 is achieved by inserting the positioning bolt through the hole on the sleeve 1 into the bolt hole on the first connecting part 201. It should be noted that when the sleeve 1 and the motor base 2 are detachably connected through this structure, the inner wall of the first connecting part 201 is provided with a vertical plane, and the threaded hole 206 is arranged along the plane. By arranging the plane on the inner wall of the first connecting part, the threaded hole is thickened inward, which improves the connection strength between the sleeve 1 and the motor base 2 without affecting the fit between the pipe wall of the first connecting part 201 and the inner wall of the sleeve 1.

[0038] Of course, the detachable connection of the sleeve 1 and the motor base 2 can also be that the first connecting part 201 and the sleeve 1 are provided with internal and external threads that match each other, and the two are connected through threads, which can also achieve quick installation, or the first connecting part 201 and the sleeve 1 are connected through interference fit and clamped through friction.

[0039] It should be noted that when the motor 4 needs to control the rotation of the lead screw 7 to control the height adjustment of the tripod, since the motor 4 is arranged on the flange ring disc 203 and the output end of the motor 4 is in the first connecting part 201, it is difficult to lock the shaft coupling 9 between the lead screw 7 and the output end of the motor 4. Therefore, preferably, the first connecting part 201 is provided with a strip-shaped through hole through which a screwdriver can directly enter to tighten the shaft coupling 9.

[0040] Further, as shown in Figure 2 the pipe wall of the second connecting part 202 is provided with a ring groove 204 in the circumferential direction, which can be used to connect and position the motor housing 3 to prevent the motor housing 3 from falling off. The motor housing 3 includes two half shells 301, and the two half shells 301 are connected by bolts, one end forms a cavity covering the motor 4, and the other end forms a sleeve ring matching the pipe diameter of the second connecting part 202, and the sleeve ring ring wall is provided with a convex ring 302 matching the ring groove 204. The motor housing 3 is connected by the convex ring 302 matching the number, thickness, diameter, etc. of the ring groove 204 on the second connecting part 202, which can fix the motor housing 3 on the motor base 2. Since the motor housing 3 is composed of two half shells 301, the two half shells 301 can be separated by removing the bolts, realizing the detachable connection of the motor housing 3 and the motor base 2. The cavity of the motor housing 3 is provided with a control panel 5 electrically connected with the motor 4 for controlling the rotation of the motor 4. When the motor 4 is directly connected with the lead screw 7, the motor 4 preferably uses a planetary reducer. Of course, the motor housing 3 and the second connecting part 202 can also be detachably connected in a threaded connection manner.

[0041] In this embodiment, the components of the driving structure are detachably connected to each other. Specifically, the installation and assembly are as follows: the motor 4 is connected to the flange ring disc 203 of the motor base 2, and at this time, the half convex ring 302 structure of one half shell 301 is clamped in the ring groove 204 of the motor base 2. After the control board 5 is installed, the other half shell 301 is connected by bolts, and positioning screws are arranged at the sleeve ring to avoid rotation between the motor housing 3 and the motor base 2. Then, the motor 4 is drivingly connected to the lead screw 7 through the coupling 9, the screwdriver is inserted from the long hole 205, the coupling 9 is tightened, the first connecting part 201 of the motor base 2 is sleeved into the sleeve 1, and the sleeve 1 and the motor base 2 are connected and locked by bolts, and the installation of the driving assembly for controlling and lifting is completed. The parts of this embodiment do not need to be integrally formed with the sleeve 1. When installed, the parts are connected in sequence to realize the rapid assembly of the motor 4 driving part. The internal motor 4 can be easily disassembled for maintenance when it fails. The sleeve, the motor housing 3, the motor base 2 and the like are single structural parts, which are more convenient for production and molding, have lower production cost, and are more conducive to popularization and use.

[0042] Embodiment two:

[0043] A tripod, as shown in Figure 1 , comprises a connecting seat 11 and a storable leg 10, and the leg 10 is connected to the connecting seat 11 and the lifting driving assembly structure of the tripod in the above embodiment.

[0044] Specifically, the upper end of the sleeve 1 is connected to the connecting seat 11, and the lifting pipe 6, the lead screw 7 and the nut 8 matched with the lead screw 7 are further included. The lead screw 7 is arranged in the lifting pipe 6, and the lifting pipe 6 is fixedly connected with the nut 8. The upper end of the lifting pipe 6 extends out of the connecting seat. The motor 4 is drivingly connected with the lead screw 7 for driving the lifting pipe 6 to lift. The top of the lifting pipe 6 is provided with a mounting table for placing instruments.

[0045] Since the motor 4 needs to control the rotation of the lead screw 7 to control the lifting of the tripod, the higher the height adjusted by the rotation of the lead screw 7, the more unstable the tripod. In order to improve this problem, on the basis of the first embodiment, as shown in Figure 2 and Figure 3As shown, further include a lifting pipe 6, lead screw 7 and nut 8 with the lead screw 7, the lead screw 7 is provided in the lifting pipe 6, the lifting pipe 6 is fixedly connected with the nut 8, the lifting pipe 6 includes an inner tube 601 and an outer tube 602, the inner tube 601 is clearance fitted with the lead screw 7, and the outer tube 602 is clearance fitted with the sleeve 1. The sleeve 1 is arranged at the outermost layer, which can shield and protect the lead screw 7, the lifting pipe 6 and other structures, the sleeve 1 directly contacts with the supporting and fixed tripod leg 10, which can serve as the basis for stabilizing the internal structure, the inner tube 601 of the lifting pipe 6 is clearance fitted with the lead screw 7, the maximum clearance of the clearance fit is not more than 1mm, which ensures that the inner tube 601 does not provide a shaking space for the lead screw 7 under the condition that the lifting pipe 6 is stable, limits the lead screw 7, and ensures that the lead screw 7 does not shake, thereby ensuring the stability of the motor 4 transmission and the precision of the lead screw 7 rotation height adjustment. The outer tube 602 of the lifting pipe 6 is clearance fitted with the smallest diameter in the sleeve 1, which can effectively reduce the shaking of the lifting pipe 6 during lifting, so that the lifting pipe 6 is always sleeved by the sleeve 1 during the lifting process of the whole tripod, cooperates with the lead screw 7 inside the lifting pipe 6, and eliminates the gap and interval of the part of the lifting pipe 6 in the sleeve 1 as much as possible, avoids the shaking of the lifting pipe 6, and maintains the strength and stability of the lifting pipe 6.

[0046] In this embodiment, by using the driving equipment structure of the above embodiment, the stability and precision of the tripod lifting can be realized, and the combination installation can be conveniently carried out during production and installation, and the components are independent and detachably connected, the manufacturing difficulty is low, and the later maintenance and repair are more convenient.

[0047] Specifically, the basic principle, main features and advantages of the utility model are shown and described above. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principle of the utility model, and various changes and improvements can be made without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model claimed.

Claims

1. A tripod lifting drive assembly structure, characterized in that, The application relates to a lifting drive assembly structure of a tripod, which comprises a sleeve (1), a motor base (2) and a motor shell (3), the motor base (2) is detachably connected to one end of the sleeve (1), a motor (4) is detachably connected to the motor base (2), and the motor shell (3) is detachably connected to the motor base (2) and covers the motor (4).

2. The lifting drive assembly of a tripod according to claim 1, wherein, The motor base (2) comprises a flange ring disc (203), a first connecting part (201) and a second connecting part (202) connected to each other, the first connecting part (201) is used for detachably connecting the sleeve (1), the second connecting part (202) is used for detachably connecting the motor shell (3), and the flange ring disc (203) is used for connecting the motor (4).

3. The lifting drive assembly of a tripod according to claim 2, wherein, The first connecting part (201) comprises a tubular positioning cylinder, one end of the sleeve (1) is matched with the cylinder diameter of the positioning cylinder, the first connecting part (201) can be slid into the sleeve (1) along the inner wall of the sleeve (1) and make the positioning cylinder and the sleeve (1) be on the same axis.

4. The lifting drive assembly of a tripod according to claim 3, wherein, The positioning cylinder is a cylinder.

5. The lifting drive assembly of a tripod according to claim 3, wherein, A plurality of bolt holes are arranged on the first connecting part (201), and a plurality of holes matched with the bolt holes are arranged on the wall of the sleeve (1); or inner threads and outer threads matched with each other are arranged on the first connecting part (201) and the sleeve (1). A vertical plane is arranged on the inner wall of the first connecting part (201), and the threaded holes (206) are arranged along the plane; and / or a strip-shaped through hole is arranged on the first connecting part (201).

6. The lifting drive assembly of a tripod according to claim 3, wherein, The second connecting part (202) is circumferentially provided with an annular groove (204), the motor shell (3) comprises two half shells (301), the two half shells (301) are connected by bolts at one end to form a cavity covering the motor (4), and are connected by bolts at the other end to form a sleeve ring matched with the annular groove (204) of the second connecting part (202).

7. The lifting drive assembly of a tripod according to claim 2, wherein, The application further relates to the lifting drive assembly structure of the tripod, the upper end of the sleeve (1) is connected to a connecting base (11), the lifting pipe (6), the lead screw (7) and the nut (8) matched with the lead screw (7) are further arranged, the lead screw (7) is arranged in the lifting pipe (6), the lifting pipe (6) is fixedly connected with the nut (8), the upper end of the lifting pipe (6) extends out of the connecting base, the motor (4) is in transmission connection with the lead screw (7) and is used for driving the lifting pipe (6) to lift.

8. A tripod comprising a connecting seat (11) and a stowable leg (10), the leg (10) being connected to the connecting seat (11), characterized in that The lifting pipe (6) comprises an inner pipe (601) and an outer pipe (602), the inner pipe (601) is in clearance fit with the lead screw (7), and the outer pipe (602) is in clearance fit with the sleeve (1).

9. The tripod of claim 8, wherein, The top of the lifting pipe (6) is provided with a mounting table for placing instruments.

10. The tripod of claim 8, wherein, ​

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