Electric lifting tripod

Abstract

The utility model relates to the technical field of laser instrument supporting equipment, in particular to an electric lifting tripod which comprises a connecting base, supporting legs capable of being stored are connected to the connecting base, the connecting base is fixedly connected with a vertically-arranged sleeve, a lifting transmission part and a lifting pipe are arranged in the sleeve, and the lifting transmission part is connected with the lifting pipe. The lifting pipe extends out of the upper part of the connecting seat and supports a laser instrument, and the lifting pipe is in transmission connection with a motor through the lifting transmission part; compared with the prior art, the motor is connected through the sleeve and is arranged below the sleeve, so that the gravity center of the whole tripod can move downwards, and the overall stability of the tripod after a laser instrument is lifted is improved; and meanwhile, the lifting pipe and the lifting transmission part are both arranged in the sleeve, the sleeve can play a certain protection role, and the problem that the lifting smoothness of the lifting pipe and the lifting transmission precision are affected by dust and impurities caused by environmental factors can be solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to laser instrument support equipment technical field, specifically provide a kind of electrically operated tripod. BACKGROUND

[0002] Laser instrument includes laser level, laser sweep level, laser line projector etc., for people's daily life in decoration, decoration etc. Engineering. These laser instruments are generally equipped with tripod or other support device when using, for supporting fixed laser instrument.

[0003] In order to realize the automatic height adjustment of tripod, the conventional tripod supporting laser instrument is lifted by motor control lifting rod with rack, such as existing patent CN203309468U, motor is arranged in the guide housing of mounting leg, and in order to ensure sufficient lifting stroke, the motor with gear in initial state is generally in the upper half of lifting rod. And laser instrument is lifted along with lifting rod, the whole tripod can be unstable due to the reason of high gravity center, and it is often necessary to additionally add counterweight at the bottom of lifting rod to improve the stability of tripod after loading laser instrument, to prevent the loaded laser instrument from shaking due to the lifting of tripod, and then lose accuracy. SUMMARY

[0004] The utility model first aspect is to solve the above problem, provide a kind of tripod of more stable lifting, make the tripod of more accurate laser instrument measurement, and the main technical solutions are as follows:

[0005] A kind of electrically operated tripod, including connecting seat, the connecting seat is connected with the leg that can be received, the connecting seat is fixedly connected with the sleeve vertically arranged, the sleeve is provided with lifting transmission part and lifting pipe, the lifting pipe is supported laser instrument from the connecting seat top and stretches out, the lifting pipe is driven connection with motor by the lifting transmission part.

[0006] In this scheme, relative to prior art, motor is connected by sleeve and is arranged below, can make the gravity center of the whole tripod move downward, improve the stability of tripod as a whole after laser instrument is lifted;While lifting pipe and lifting transmission part are all arranged in the sleeve interior, the sleeve can play a certain protective role, and the problem that the dust impurity influence lifting pipe lifting fluency and lifting transmission transmission accuracy due to environmental factors can also be reduced.

[0007] The utility model second aspect is based on making tripod more stable, let the height adjustment of laser instrument be more accurate, the lifting transmission part includes screw nut unit, the screw nut unit includes lead screw and lifting nut, the lifting nut is provided with the screw hole that is adapted with the lead screw, the lifting pipe is fixedly connected with the lifting nut, the lead screw is driven connection with the motor.

[0008] In this scheme, the existing gear and rack transmission is replaced by a screw nut transmission, which can greatly improve the continuity of the lifting pipe lifting; at the same time, the motor can be arranged below the screw rod to drive the screw rod to rotate, which is convenient for the motor to be arranged below, ensures that the gravity center is lowered to improve the stability of the tripod, and also improves the precision of the tripod in controlling the lifting of the laser instrument.

[0009] Preferably, the motor is arranged directly below the sleeve, and the motor output shaft is coaxial with the screw rod, further improving the coaxial transmission.

[0010] Preferably, the lower end of the sleeve is detachably connected with a motor housing, and the motor housing is further provided with a control unit for controlling the rotation of the motor.

[0011] In this scheme, the detachable connection of the motor housing can facilitate the transmission connection between the motor and the lifting transmission part during the installation of the tripod, avoid the interference of external collision and dust on the motor, and also facilitate the maintenance of the motor through the detachable motor housing. In addition, the motor housing increases the weight below the sleeve, lowers the gravity center of the tripod, and also provides installation and protection space for the circuit board of the control motor.

[0012] In order to avoid the shaking of the lifting pipe during lifting due to the matching relationship, and further cause the measurement error of the laser instrument installed on the upper end of the lifting pipe, the lifting pipe is in sliding cooperation with the sleeve, and the sleeve provides guidance for the lifting pipe; or, the upper end of the connecting seat is provided with an opening, the opening is in sliding cooperation with the lifting pipe, and the opening provides guidance for the lifting pipe; or, the upper end of the connecting seat is provided with an opening, a guide element is arranged in the opening, the guide element is in sliding cooperation with the lifting pipe, and the guide element provides guidance for the lifting pipe. In this scheme, the lifting pipe can be completely guided by the sleeve, the opening of the connecting seat or the guide element during lifting, so that the lifting pipe does not shake during lifting, and the stability of the lifting pipe supporting the laser instrument is further improved.

[0013] Since the screw rod and the motor need to be coaxially arranged, but in actual installation, the screw rod and the motor cannot be completely coaxial, which will cause the screw rod to shake more easily when it is farther away from the motor, and further affect the precision of the screw rod transmission. In order to avoid the problem of reduced lifting precision caused by the shaking of the screw rod, preferably, the inner diameter of the lifting pipe is adapted to the diameter of the screw rod.

[0014] In this scheme, the inner diameter of the lifting pipe is adapted to the diameter of the screw rod, which limits the shaking of the screw rod by the inner wall of the lifting pipe, so that the screw rod has no shaking space, and the axis of the screw rod is coaxial with the motor output shaft as much as possible.

[0015] Preferably, the lifting nut further comprises a small-diameter tube and a large-diameter tube, which are coaxially arranged with the threaded hole on the lead screw, and the lifting tube is detachably connected with the small-diameter tube.

[0016] In this scheme, when the lead screw rotates, the nut can slide up and down along the lead screw, thereby controlling the lifting of the lifting tube.

[0017] Preferably, a limiting portion is arranged inside the sleeve along the length direction, and the lifting nut is provided with a matched guide portion, and the limiting portion and the guide portion are in sliding fit.

[0018] Preferably, the guide portion comprises a sliding groove arranged on the outer wall of the large-diameter tube, and the limiting portion comprises a sliding rail arranged inside the sleeve and matched with the sliding groove; and / or, a plurality of guide portions are arranged along the circumferential direction of the lifting nut, and a plurality of limiting portions are arranged along the circumferential direction of the sleeve.

[0019] In this scheme, the sliding groove and the sliding rail ensure the stability of the sliding of the lifting nut, also play a role in limiting the rotation of the lifting nut, and a plurality of sliding rails are arranged in the sliding groove on the outer wall of the small-diameter tube of the lifting nut at the same time, which also plays a limiting role on the lifting nut, avoids the sliding of the lifting nut when sliding, and indirectly ensures the stability of the lifting tube when lifting; and since the sliding rail is protruding, the protruding sliding rail also ensures the contact between the inside of the sleeve and the outer wall of the lifting tube, and the sleeve is as long as the lifting tube can be lifted to a height, and the sliding rail provides structural support for improving the stability of the lifting tube.

[0020] Preferably, a bearing is fixedly arranged at the lower end of the sleeve, the lower end of the lead screw penetrates through the bearing, the bearing can increase the weight of the lower part, also can reduce the shaking of the lead screw, and ensures the stability of the rotation of the lead screw; and / or, the connecting seat is arranged at the upper end of the sleeve.

[0021] Preferably, a sliding ring is sleeved outside the sleeve, a supporting rod is rotatably connected to the lower end of the supporting leg, and the supporting rod is rotatably connected to the sliding ring; by sliding the sliding ring, the supporting leg can be unfolded or stored.

[0022] In this scheme, the sliding ring uniformly controls the unfolding and storage of all supporting legs, can ensure that the unfolding of each supporting leg is consistent, keeps the center of gravity on the sleeve at all times, and further improves the supporting stability of the supporting leg.

[0023] The beneficial effects of the utility model are as follows:

[0024] 1. The motor of the utility model is connected by sleeve and sets below, can make the gravity center of whole tripod move downward, improve the stability of tripod whole after laser instrument is lifted.

[0025] 2. The lifting pipe and lifting transmission part of the utility model are all arranged in the sleeve, the sleeve can play a certain protection role, and can also reduce the problem of dust and impurities affecting the lifting fluency and lifting transmission precision of the lifting pipe due to environmental factors.

[0026] 3. The utility model uses screw rod and lifting nut for transmission, can greatly improve the continuity of lifting pipe lifting, also is convenient for motor setting below, ensures the gravity center to move downward to improve the stability of tripod, and improves the precision of tripod controlling laser instrument lifting. DRAWINGS

[0027] 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 embodiment description, obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained according to these drawings without creative labor.

[0028] Figure 1 It is the front view of the utility model;

[0029] Figure 2 It is the half sectional view of the utility model;

[0030] Figure 3 It is the utility model Figure 2 The enlarged view of A in the utility model;

[0031] Figure 4 It is the schematic view of the lifting nut and nut sleeve of the utility model;

[0032] Figure 5 It is the local schematic view of motor installation of the utility model.

[0033] 1-connection seat, 2-leg, 3-sleeve, 301-slideway, 4-lifting pipe, 5-motor, 6-screw rod, 7-lifting nut, 8-nut sleeve, 801-small diameter pipe, 802-large diameter pipe, 803-slideway, 9-motor casing, 10-bearing, 11-sliding ring, 12-supporting rod, 13-motor seat, 1301-first connecting part, 1302-second connecting part, 1303-flange ring disc. DETAILED DESCRIPTION

[0034] Combined with the drawings, the technical scheme of the present application is clearly and completely illustrated through the specific implementation mode of the embodiment.

[0035] Embodiment one:

[0036] A motor-driven elevating tripod, as shown in Figure 1 and Figure 2 The connecting seat 1 is fixedly connected with a vertically arranged sleeve 3, the sleeve 3 is internally provided with an elevating transmission part and an elevating pipe 4, the elevating pipe 4 extends from above the connecting seat 1 and supports a laser instrument, and the elevating pipe 4 is in transmission connection with a motor 5 through the elevating transmission part

[0037] In this embodiment, compared with the prior art, the motor 5 is connected by the sleeve 3 and arranged below, so that the gravity center of the entire tripod is moved downward, the stability of the entire tripod after the laser instrument is elevated is improved, the elevating pipe 4 and the elevating transmission part are arranged inside the sleeve 3, the sleeve 3 can play a certain protection role and can also reduce the problem that dust and impurities caused by environmental factors affect the elevating fluency and the transmission precision of the elevating transmission.

[0038] Specifically, the elevating transmission part can be a screw nut transmission structure, a gear and rack transmission, etc., and in this embodiment, a screw nut transmission structure is preferably used, as shown in Figure 2 and Figure 4 The elevating transmission part comprises a lead screw 6 and an elevating nut 7 matched with the lead screw 6, the elevating pipe 4 is fixedly connected with the elevating nut, and the lead screw 6 is in transmission connection with the motor 5. The motor 5 is arranged directly below the sleeve 3, and the output shaft of the motor 5 is coaxial with the lead screw 6. A shaft coupling is preferably used to connect the motor 5 and the lead screw 6, so as to facilitate the assembly of the motor 5, ensure the coaxiality, and further improve the transmission precision of the motor 5.

[0039] Compared with a gear and rack, the screw nut can greatly improve the continuity of the elevating pipe 4, and at the same time, the motor 5 can be arranged below the lead screw 6 to drive the lead screw 6 to rotate, so as to facilitate the arrangement of the motor 5 below, ensure the gravity center to move downward, improve the stability of the tripod, and also improve the precision of the control of the laser instrument by the tripod. Preferably, a motor housing 9 is detachably connected to the lower end of the sleeve 3, and a circuit board for controlling the rotation of the motor 5 is arranged in the motor housing.

[0040] Further, due to the detachable connection of the motor housing 9, the transmission connection between the motor 5 and the elevating transmission part can be facilitated during the installation of the tripod, external collision and dust interference of the motor 5 can be avoided, and the motor 5 can be conveniently maintained through the detachable motor housing 9. In addition, the motor housing 9 increases the weight below the sleeve 3, so that the gravity center of the tripod is lower, and the motor housing 9 also provides installation and protection space for the circuit board for controlling the motor 5.

[0041] Of course, the sleeve 3 lower end fixedly provided with bearing 10, the lead screw 6 lower end through the bearing 10, the bearing 10 can increase the weight of the lower, also can reduce the lead screw 6 shake, ensure the stability of the lead screw 6 rotation; The connecting seat 1 is arranged on the upper end of the sleeve 3.

[0042] Example two:

[0043] On the basis of example one, for the convenience of motor assembly, motor 5 and motor housing 9 can be through the motor seat 13 and the lower end of the sleeve 3. As shown in Figure 5 The motor seat 13 includes the first connecting part 1301 and the second connecting part 1302, the first connecting part 1301 and the second connecting part 1302 are provided with flange ring disc 1303, flange ring disc 1303 is used for bolt connection motor 5, the motor 5 can be detachably connected below the lead screw 6, can limit the position of the motor 5, ensure the coaxial connection of the lead screw 6 and the motor 5, and through the flange ring disc 1303 connection motor 5, also ensure the stability of the motor 5 connected on the motor seat 13.

[0044] Specifically, the first connecting part 1301 is a positioning cylinder, the first connecting part 1301 is inserted into the sleeve 3 by sliding along the inner wall of the sleeve 3, a plurality of bolt holes are arranged on the first connecting part 1301, and a plurality of holes are arranged on the sleeve 3. By sliding the first connecting part 1301 into the sleeve 3. Since the sleeve 3 and the first connecting part 1301 can be ensured coaxial by fine machining during production and manufacturing, the flange ring disc 1303 in the motor seat 13 is integrally formed with the motor seat 13, and the coaxiality of the two can also be ensured by fine machining, the plurality of flange thread holes on the flange ring disc 1303 can also ensure that the motor 5 is accurately installed on the flange ring 1303, and the lead screw 6 is arranged in the sleeve 3, which is also coaxially arranged with the sleeve 3, which ensures the coaxiality of the motor 5 and the lead screw 6 after the motor 5 is assembled on the sleeve 3.

[0045] Example three:

[0046] On the basis of example one and two, as Figure 2 And Figure 4As shown, in order to avoid the lifting pipe 4 from shaking during lifting, and further causing the laser instrument installed on the upper end of the lifting pipe 4 to generate measurement error, the embodiment provides various ways to avoid the lifting pipe 4 from shaking during lifting. The ways include but are not limited to: a. the lifting pipe 4 is in sliding fit with the sleeve 3, and the sleeve 3 provides guidance for the lifting pipe 4; b. an opening is provided on the upper end of the connecting seat 1, the size of the opening is the same as the outer diameter of the lifting pipe 4, the opening is in sliding fit with the lifting pipe 4, and the opening provides guidance for the lifting pipe 4; c. an opening is provided on the upper end of the connecting seat 1, a guide piece is provided in the opening, the guide piece is in sliding fit with the lifting pipe 4, and the guide piece provides guidance for the lifting pipe 4.

[0047] In this embodiment, the first way described above is explained in detail. Specifically, the lifting pipe 4 is in sliding fit with the sleeve 3, that is, the outer wall of the lifting pipe 4 is adapted to the internal passage of the sleeve 3, so that the outer wall of the lifting pipe 4 is in close contact with the internal passage of the sleeve 3, and the lifting pipe 4 can be guided by the sleeve 3 during lifting, so that the lifting pipe 4 does not shake, and the stability of the lifting pipe 4 supporting the laser instrument is further improved. The lifting pipe 4 is coaxial with the lead screw 6, the profile of the internal passage of the sleeve 3 is adapted to the profile of the outer wall of the lifting pipe 4, that is, the minimum width of the internal passage of the sleeve 3 needs to be greater than or equal to the maximum width of the lifting pipe 4, so that the sleeve 3 can be sleeved on the outside of the lifting pipe 4, and the lifting pipe 4 is in sliding contact with the sleeve 3 at all radial positions. Preferably, the lifting pipe 4 is a circular pipe, and the outer wall thereof is a circular structure, and the internal passage of the sleeve 3 is also a cylindrical passage, so that the two can better cooperate.

[0048] In addition, the lead screw 6 and the motor 5 need to be coaxially arranged, but in actual installation, the lead screw 6 and the motor 5 cannot be completely coaxial, which will cause the lead screw 6 to shake more easily as it is farther away from the motor 5, and further affect the transmission precision of the lead screw 6. In order to avoid the problem of reduced lifting precision caused by the shaking of the lead screw 6, the diameter of the lifting pipe 4 needs to be adapted to the diameter of the lead screw 6.

[0049] Specifically, since the sleeve 3 is arranged on the outermost layer, it can be connected with the legs 2 of the tripod, and serves as a basis for fixed arrangement, and can also protect the internal components and prevent dust from falling. At the same time, the lifting pipe 4 needs to be fixedly connected with the lifting nut 7, so that the lifting nut 7 drives the lifting pipe 4 to lift when the lead screw 6 rotates and lifts, and the inner diameter of the lifting pipe 4 is slightly larger than the diameter of the lead screw 6, so that the lifting pipe 4 is in clearance fit with the lead screw 6, and the amplitude of the shaking of the lead screw 6 is limited.

[0050] More specifically, for the lifting tube 4, the lifting tube 4 is inserted into the sleeve 3, and the sleeve 3 can limit the displacement of the lifting tube 4 in the radial direction no matter how high the lifting tube 4 is lifted, thereby ensuring the stability of the lifting tube 4 supporting the laser instrument. Since the lifting tube 4 has been limited in the radial direction by the sleeve 3, and the top of the lead screw 6 is always inserted into the lifting tube 4, by reducing the inner diameter of the lifting tube 4, the wobble of the lead screw 6 can be limited, and by the gap between the inner diameter of the lifting tube 4 and the outer wall of the lead screw 6, the lead screw 6 can be limited by the lifting tube 4 even if the lead screw 6 wobbles, while improving the transmission accuracy of the lead screw 6, avoiding the situation that the lead screw 6 fails to cooperate with the shaft coupling due to long-term wobble, and improving the space utilization, reducing the size of the external sleeve 3, and improving the transmission accuracy of the motor 5.

[0051] Further, the lifting tube 4 can include a coaxial inner tube and an outer tube, and the lifting tube is provided as a two-layer sleeve structure of the inner and outer tubes, and the inner and outer tubes are hollow, which can greatly reduce the weight of the lifting tube itself, reduce the motor load, and also reduce the production cost.

[0052] Embodiment Four:

[0053] On the basis of the above-mentioned embodiments, a structure for preventing the lifting nut 7 from rotating with the lead screw 6 is provided, as shown in Figures 2 to 4 The lifting nut 7 includes a small-diameter tube 801 and a large-diameter tube 802, which are coaxially arranged on the threaded hole of the lead screw 6, and the lifting tube 4 is detachably connected with the small-diameter tube 801, and the lifting nut 7 is also an integral whole. The lifting nut 7 includes coaxially arranged small-diameter tube 801 and large-diameter tube 802, and the lifting tube 4 is detachably connected with the small-diameter tube 801. Specifically, the lifting nut 7 can be a traditional columnar nut, at this time the lifting nut 7 is arranged in the nut sleeve 8, and the small-diameter tube 801 and the large-diameter tube 802 are the structure of the nut sleeve 8, at this time the lifting nut 7 is limited by the nut sleeve 8 and does not rotate, when the lead screw 6 rotates, the lifting nut 7 can slide up and down along the lead screw 6, thereby controlling the lifting of the lifting tube 4. The lifting tube 4 is connected with the small-diameter tube 801, and since the lifting tube 4 relies on the sleeve 3 to maintain the stability of the lifting, the stability of the connection between the lifting tube 4 and the lifting nut 7 can be ensured, thereby further improving the transmission accuracy of the lead screw 6 while ensuring the stability of the lifting tube 4.

[0054] Further, the outer wall of the large-diameter pipe 802 is provided with a sliding groove 803, and the sleeve 3 is internally provided with a sliding rail 301 matched with the sliding groove 803. The sliding grooves 803 and the sliding rails 301 are circumferentially and uniformly arranged in multiple numbers, and the sliding grooves 803 and the sliding rails 301 ensure the stability of the sliding of the nut sleeve 8, and also play a role in limiting the rotation of the nut sleeve 8 and the nut, and the multiple sliding rails 301 are simultaneously arranged in the sliding grooves 803 on the outer wall of the small-diameter pipe 801 of the nut sleeve 8, which also plays a limiting role on the nut sleeve 8, avoids the sliding of the nut sleeve 8 when sliding, and indirectly ensures the stability of the lifting pipe 4 when lifting.

[0055] It should be noted that, since the sliding rail 301 protrudes and is circumferentially arranged around the axis of the lead screw 6, the protruding sliding rail 301 also ensures the contact between the inside of the sleeve 3 and the outer wall of the lifting pipe 4, and the length of the sleeve 3 can ensure that the lifting pipe 4 is lifted to a certain height, and the sliding rail 301 provides structural support to improve the stability of the lifting pipe 4.

[0056] Example five:

[0057] On the basis of the above-mentioned embodiments, as shown in Figure 1 and Figure 3 The sleeve 3 is externally sleeved with a sliding ring 11, the lower end of the leg 2 is rotatably connected with a support rod 12, and the support rod 12 is rotatably connected to the sliding ring 11. By sliding the sliding ring 11, the leg 2 is unfolded or stored.

[0058] In this embodiment, the sliding ring 11 uniformly controls the unfolding and storage of all legs 2, can ensure that the legs 2 are unfolded uniformly, keeps the center of gravity on the sleeve 3 at all times, and further improves the support stability of the legs 2.

[0059] The basic principle, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above-mentioned embodiments, and the above-mentioned embodiments and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application.

Claims

1. An electrically operated elevating tripod comprising a connecting base (1) to which stowable legs (2) are attached, characterised in that, The connecting seat (1) is fixedly connected with a vertically arranged sleeve (3), the sleeve (3) is provided with a lifting transmission part and a lifting pipe (4) inside, the lifting pipe (4) extends from above the connecting seat (1) and supports a laser instrument, and the lifting pipe (4) is in transmission connection with a motor (5) through the lifting transmission part.

2. A motorized elevating tripod according to claim 1, wherein, The lifting transmission part comprises a screw nut unit, the screw nut unit comprises a lead screw (6) and a lifting nut (7), the lifting nut (7) is provided with a threaded hole matched with the lead screw (6), the lifting pipe (4) is fixedly connected with the lifting nut, and the lead screw (6) is in transmission connection with the motor (5).

3. A motorised elevating tripod according to claim 2, wherein The motor (5) is arranged directly below the sleeve (3), and an output shaft of the motor (5) is coaxial with the lead screw (6).

4. A motorised elevating tripod according to claim 3, wherein A motor housing (9) is detachably connected to the lower end of the sleeve (3), and the motor housing (9) is also provided with a control unit for controlling rotation of the motor (5).

5. A motorized elevating tripod as claimed in claim 2, wherein, The lifting pipe (4) is in sliding fit with the sleeve (3), and the sleeve (3) provides guidance for the lifting pipe (4); Or, an opening is arranged at the upper end of the connecting seat (1), the opening is in sliding fit with the lifting pipe (4), and the opening provides guidance for the lifting pipe (4); Or, an opening is arranged at the upper end of the connecting seat (1), a guide element is arranged in the opening, the guide element is in sliding fit with the lifting pipe (4), and the guide element provides guidance for the lifting pipe (4).

6. A motorised elevating tripod according to claim 5, wherein The inner diameter of the lifting pipe (4) is matched with the diameter of the lead screw (6).

7. A motorized elevating tripod as claimed in claim 2, wherein, The lifting nut (7) further comprises a small-diameter pipe (801) and a large-diameter pipe (802), the small-diameter pipe (801) and the large-diameter pipe (802) are coaxially arranged with the threaded hole, and the lifting pipe (4) is detachably connected with the small-diameter pipe (801).

8. A motorised elevating tripod according to claim 7, characterised in that, Limiting parts are arranged along the length direction inside the sleeve (3), and the lifting nut (7) is provided with matched guide parts, and the limiting parts are in sliding fit with the guide parts.

9. A motorised elevating tripod according to claim 8, characterised in that, The guide parts comprise a sliding groove (803) arranged on the outer wall of the large-diameter pipe (802), and the limiting parts comprise a sliding rail (301) arranged inside the sleeve (3) and matched with the sliding groove (803); And / or, a plurality of guide parts are arranged along the circumferential direction of the lifting nut (7), and a plurality of limiting parts are arranged along the circumferential direction of the sleeve (3).

10. A motorized elevating tripod as claimed in claim 2, wherein, A bearing (10) is fixedly arranged at the lower end of the sleeve (3), the lower end of the lead screw (6) penetrates through the bearing (10), and the connecting seat (1) is arranged at the upper end of the sleeve (3); And / or, a sliding ring (11) is sleeved outside the sleeve (3), a support rod (12) is rotationally connected to the lower end of the supporting leg (2), the support rod (12) is rotationally connected to the sliding ring (11), and by sliding the sliding ring (11), the supporting leg (2) can be unfolded or stored.

Images