Tripod telescopic fixing structure

Abstract

The utility model belongs to the field of engineering surveying, and particularly relates to a telescopic fixing structure of a tripod. A tripod telescopic fixing structure comprises a fixing hoop, a plurality of supporting rods are arranged in the fixing hoop in a sleeved mode, and movable blocks which can be connected with the supporting rods in a sliding mode so as to be used for adjusting the horizontal height are arranged between the supporting rods. The fixing hoop is provided with a positioning device used for extruding the supporting rods so as to compress a gap between the two supporting rods, the positioning device comprises a fastener penetrating through the fixing hoop, and a blocking piece used for increasing the contact area of the positioning device and the supporting rods is arranged on the side, located in the fixing hoop, of the fastener. According to the utility model, the blocking piece is arranged, so that the pressure intensity of the fastening piece on the supporting rod is increased, the abrasion and depression of the supporting rod are reduced, and the consequences of instability, falling and the like of an instrument can be effectively prevented. Meanwhile, by arranging the limiting device, the connecting tightness of the fastening piece and the blocking piece is guaranteed, and the risk of slipping off is reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of engineering survey, concretely relates to a tripod telescopic fixing structure. BACKGROUND

[0002] Total station, namely total station type electronic speed measuring instrument, is a kind of high-tech measuring instrument integrating light, machine and electricity.It can automatically display necessary observation data such as slant distance, zenith distance (vertical angle) and horizontal angle by observation, and can obtain plane distance, height difference and point coordinate in the same time.The theodolite is a kind of measuring instrument designed according to the angle measurement principle, and is used to measure horizontal angle and vertical angle.It makes the telescope point to different directions by the mechanical part of telescope, so as to carry out angle measurement.The top surface of tripod providing support must be kept substantially horizontal when total station and theodolite and other engineering surveying instruments are used, and then the instruments can be normally measured after being finely adjusted to be horizontal.The tripod provides stable support platform for total station and theodolite and other engineering surveying instruments, and ensures that the instruments can be kept horizontal, stable and accurate during measurement.It is one of important factors to ensure measurement accuracy and efficiency, and in application, the top surface of tripod can be made horizontal by adjusting the overlapping length of each leg telescopic section.

[0003] In the technical scheme of patent CN 220416893 U, the tripod telescopic leg is provided.The first telescopic component, the second telescopic component and the third telescopic component are slidably connected, and the second pipe of the second telescopic rod component is slidably connected with the two symmetrical first pipes of the first telescopic rod component through the second pipe sleeve.The utility model has reasonable structure design, good stability, convenient production and use, and wide application range.

[0004] However, the wrench and telescopic component of the patent are squeezed and worn greatly, which affects the fixing effect, reduces the measurement accuracy, even causes the instrument to fall and result in measurement accident, and is not conducive to use in actual measurement. SUMMARY

[0005] The utility model provides a tripod telescopic fixing structure to overcome the problem that the telescopic component of the prior art is greatly worn, which affects service life and measurement accuracy.

[0006] To achieve the above-mentioned purpose, the utility model realizes the following technical scheme:

[0007] A tripod telescopic fixing structure comprises:

[0008] The device includes a fixed sleeve with several support rods inside. Movable blocks that can slide between the support rods for adjusting their horizontal height are provided. The fixed sleeve is equipped with a positioning device for compressing the support rods to reduce the gap between them. The positioning device includes a fastener that penetrates the fixed sleeve, and a barrier is provided on one side of the fastener inside the fixed sleeve to increase the contact area between the positioning device and the support rods.

[0009] This utility model includes a fixing sleeve for limiting support rods, and a movable block is provided between the two support rods. The relative position between the two support rods is adjusted by fasteners, and the movable block is fixed at a suitable position so that the tripod is at a suitable height.

[0010] This ensures measurement accuracy. It also includes a barrier component positioned between the support rod and the fixing sleeve. This barrier component increases the contact area between the fastener and the support rod, reducing the concentrated stress on the support rod by the fastener. Therefore, it reduces wear on the support rod, increases its service life, and effectively prevents instability caused by support rod wear during use. This increases measurement accuracy and is beneficial for practical applications.

[0011] Preferably, the barrier includes a slot for connecting a fixing fastener.

[0012] On the one hand, the barrier component of this invention is provided with a slot, which converts the rotational force of the fastener into a horizontal force. Through the slot, rotating the fastener causes the barrier component to horizontally tighten or loosen adjacent support rods, facilitating the fixing and adjustment of the movable block. On the other hand, this invention facilitates the installation and disassembly of the barrier component. Compared with traditional fixed connection methods, the slot design makes the installation and replacement of the barrier component more convenient.

[0013] Preferably, the fastener has an expansion end near the barrier member that facilitates a fixed connection with the barrier member.

[0014] The fastener of this utility model has an expansion end at the front end. The design of the expansion end allows the fastener to both hold the barrier in place so that it does not fall off when the fastener is loosened, and to not affect the barrier from tightening the support rod when the fastener rotates, thus ensuring that the tripod telescopic part can be adjusted in height and is firmly fixed.

[0015] Preferably, the fastener is provided with threads, and the fixing sleeve is provided with a first threaded hole adapted to the threads, and the fastener and the fixing sleeve are threadedly connected.

[0016] The screw hole is arranged on the side of the fixing sleeve and is in threaded connection with the fastener, so that the stability of the fastener is ensured, and meanwhile, the convenience of disassembly is improved, and adjustment in actual application process is facilitated.

[0017] As preferred, a horizontal bar with a knob is arranged on the side far from the expansion end of the fastener.

[0018] The horizontal bar enables an operator to hold and rotate the fastener more easily, provides a more comfortable holding point and a larger force arm, and thus reduces operation difficulty.

[0019] As preferred, the positioning device comprises a bolt seat arranged around the fastener on the outer side of the fixing sleeve.

[0020] The bolt seat provides a counterforce frame for the fastener and transmits force to the fixing sleeve, and thus the stability of the device is improved.

[0021] As preferred, a limiting device for preventing the barrier from sliding is arranged between the fastener and the barrier.

[0022] The limiting device can ensure that the fastener and the barrier maintain correct positions and relative relationships during connection. By limiting the movement range of the fastener and the barrier, connection loosening or failure caused by factors such as vibration, impact or temperature change can be avoided, and thus the stability of the whole connection is improved. The limiting device can prevent the barrier from sliding and also cannot affect the function of the fastener.

[0023] As preferred, the limiting device comprises an insertion plate inserted into the clamping groove, and further comprises a cover plate fixedly connected with the insertion plate.

[0024] The insertion plate is used for limiting the fastener and preventing the barrier from sliding out of the fastener clamping groove when the clamping groove is downward, and the cover plate is also fixedly connected with the barrier and is used for increasing the stability of the whole limiting device.

[0025] As preferred, a bolt is arranged on the cover plate, a second screw hole is arranged on the barrier, and the cover plate and the barrier are connected through the bolt and the second screw hole.

[0026] The cover plate and the barrier are tightly connected through the bolt and the second screw hole, and the insertion plate is prevented from sliding out of the barrier clamping groove. Such a design ensures that the barrier can be inserted into the fastener clamping groove and also prevented from sliding out after installation.

[0027] Therefore, the utility model has the following beneficial effects:

[0028] (1) The utility model discloses enlarged the fixed area of fastener to surveying instrument tripod support rod, avoid fastening bolt directly and top in support rod and lead to fixed rod wear, recess in fastening position, influence telescopic section fixed effect, can effectively prevent movable block loose and lead to telescopic section failure, instrument unstable and fall down etc.

[0029] (2) The utility model discloses the position of fastener through limiting device constraint barrier piece, guarantee fastener can rotate in the piece, and can prevent barrier piece and slip, improve practicality.

[0030] (3) The utility model discloses simple structure, convenient to replace, and simple operation is favorable to be used in actual production process. DRAWINGS

[0031] Figure 1 It is telescopic fixed structure schematic diagram of tripod.

[0032] Figure 2 It is fastener structure schematic diagram.

[0033] Figure 3 It is barrier piece plan view.

[0034] Figure 4 It is barrier piece section view.

[0035] Figure 5 It is barrier piece side view.

[0036] Figure 6 It is limiting device structure schematic diagram.

[0037] Figure 7 It is limiting device side view.

[0038] Mark explanation in drawing: positioning device 00;Fixed ferrule 1;First screw hole 11;Support rod 2;Movable block 3;Barrier piece 4;Clamping groove 41;Second screw hole 42;Fastener 5;Expansion end 51;Crosspiece 52;First thread 53;Limiting device 6;Insert plate 61;Cover plate 62;Bolt 63;Bolt seat 7. DETAILED DESCRIPTION

[0039] The present application will be further described below in conjunction with specific embodiments. Those skilled in the art will be able to implement the present application based on these descriptions. In addition, the embodiments of the present application involved in the following description are generally only a part of the embodiments of the present application, not all the embodiments. Therefore, based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor should be within the scope of protection of the present application.

[0040] As Figure 1The embodiment provides a tripod telescopic fixing structure, the device comprises a fixing sleeve 1 and a plurality of support rods 2 in the fixing sleeve 1, the support rods 2 are used for supporting the device. In order to adjust the relative distance of the support rods 2, ensure that the support rods 2 are closely connected and fixed, movable blocks 3 are arranged between the support rods 2. In order to adjust the horizontal height of the device, a positioning device 00 is arranged for extruding the support rods 2 and compressing the gap between the support rods 2, the positioning device 00 comprises a fastener 5 penetrating through the fixing sleeve 1, the fastener 5 is closely attached to the support rods 2, the distance and position between the support rods 2 are adjusted according to actual conditions, the relative height between the support rods 2 is adjusted, the horizontal height is adjusted to a suitable level, and the stability and measurement accuracy are improved. In order to reduce the loss of the support rods 2 caused by repeated friction of the fastener 5, reduce the cost in the use process of the device, a blocking piece 4 is arranged between the fastener 5 and the support rods 2, the contact area of the fastener 5 and the support rods 2 is increased, the loss of the support rods 2 is reduced, and the service life is prolonged. In order to increase the connection stability of the fastener 5 and the fixing sleeve 1, a bolt seat 7 is arranged around the fastener 5 on the side of the fixing sleeve 1, the bolt seat 7 provides a counterforce frame for the fastener 5, and force is transmitted to the fixing sleeve 1.

[0041] As Figure 2 The utility further optimizes the fastener 5 on the basis of the above embodiment.

[0042] In order to conveniently fix and connect the fastener 5, an expansion end 51 is arranged at one end of the fastener 5 connected with the blocking piece 4, the fastener 5 is clamped in a clamping groove 41 of the blocking piece 4, the expansion end 51 is clamped in the clamping groove 41, the stability of the connection between the fastener 5 and the blocking piece 4 is ensured, and the phenomenon that the fastener 5 slides off in the use process is avoided. The clamping groove 41 converts the rotating force of the fastener 5 into horizontal force. By means of the clamping groove 41, rotating the fastener 5 drives the blocking piece 4 to horizontally tightly press or loosen the adjacent support rods 2, and the movable blocks 3 are conveniently fixed and adjusted. In order to conveniently adjust the fastener 5 by an operator, a horizontal bar 52 facilitating operation is arranged at the side of the fastener 5 away from the expansion end 51, and the horizontal bar 52 can enable the operator to quickly adjust the position of the fastener 5.

[0043] As Figures 3-4 The utility further optimizes the blocking piece 4 on the basis of the above embodiment.

[0044] In order to closely connect the fastener 5 and the fixing sleeve 1, a first screw hole 11 is formed in the side of the fixing sleeve 1, the fastener 5 is provided with a matching thread 53, and the fastener 5 is spirally fixed in the side of the fixing sleeve 1 through the thread 53 and the first screw hole 11, so that the stability of the connection between the two is ensured, and the position of the fastener 5 is conveniently adjusted in the subsequent use process.

[0045] As Figures 5-7 The utility model discloses a limiting device 6 based on the above embodiment.

[0046] In order to prevent the barrier 4 from slipping out of the fastener 5 from the card slot 41 when the card slot 41 is downward. The limiting device 6 for limiting the barrier 4 is arranged between the fastener 5 and the barrier 4, the limiting device 6 comprises an insertion plate 61 for positioning and fixing, the insertion plate 61 is connected in the card slot 41 and closely connected with the fastener 5, which ensures the tightness of the connection between the fastener 5 and the card slot 41 and avoids the phenomenon of the fastener 5 slipping off during use. At the same time, in order to stably fix the limiting device 6 and the barrier 4, a cover plate 62 is arranged to be closely connected with the barrier 4, the cover plate and the insertion plate 61 form a T-shaped structure, which ensures the stability of the device and is also conducive to the completion of the subsequent disassembly process.

[0047] The limiting device 6 is further optimized based on the above embodiment.

[0048] In order to fix the limiting device 6 on the barrier 4 and facilitate the adjustment of the limiting device 6, a second screw hole 42 is arranged on the barrier 4, and a bolt 63 corresponding to the second screw hole 42 is arranged on the cover plate 62. The bolt 63 connects and fixes the limiting device 6 on the barrier 4 through the second screw hole 42, preventing the insertion plate 61 from slipping out of the card slot of the barrier 4. Such design ensures that the barrier 4 can be inserted into the card slot of the fastener 5 and also prevents it from slipping out after installation.

[0049] The specific use process of the embodiment is as follows:

[0050] Adjust the fixed rods 2 sleeved in the fixed sleeve 1 to the appropriate position, screw the fastener 5 into the bolt seat 7 on the side of the fixed sleeve 1, align the card slot 41 of the barrier 4 with the fastener 5, and clamp the barrier 4 in the fixed sleeve 1. Turn over the tripod, make the card slot of the barrier 4 upward, insert the insertion plate 61 of the limiting device 6 into the card slot 41, cover the cover plate 62 on the barrier 4, and tighten the bolt 63 passing through the second screw hole 42, so that the limiting device 6 is fixed on the barrier 4. When in use, loosen the fastener 5 to drive the barrier 4 to move outward, loosen the fixed rods 2 and the movable blocks 3, adjust the fixed rods 2 to the appropriate height, tighten the fastener 5 to drive the barrier 4 to move inward, and tightly top the fixed rods 2, thereby completing the height adjustment.

Claims

1. A telescopic fixing structure of a tripod, characterized by: The utility model provides a fixing sleeve (1), the fixing sleeve (1) inside sets up a plurality of support rod (2), the support rod (2) between being provided with the movable block (3) can be slidably connected with it to be used for adjusting the horizontal height, the fixing sleeve (1) is provided with the positioning device (00) for the support rod (2) is extruded to the compression two support rod (2) between the clearance, the positioning device (00) includes a fastener (5) through the fixing sleeve (1), the fastener (5) is located inside the one side of fixing sleeve (1) and is provided with a barrier piece (4) for increasing the contact area of positioning device (00) and support rod (2).

2. The telescopic fixing structure of a tripod according to claim 1, characterized in that: The barrier piece (4) includes a clamping groove (41) for connecting the fastener (5).

3. The telescopic fixing structure of a tripod according to claim 2, characterized in that: The fastener (5) is provided with an expansion end (51) near the one end of barrier piece (4) for facilitating the fixed connection of clamping groove (41) of barrier piece (4).

4. The telescopic fixing structure of a tripod according to claim 3, characterized in that: The fastener (5) is provided with a screw thread (53), and the fixing sleeve (1) is provided with a first screw hole (11) matched with the screw thread (53), and the fastener (5) is threadedly connected with the fixing sleeve (1).

5. A telescopic fixing structure for a tripod according to claim 3 or 4, characterized in that: The fastener (5) is provided with a crosspiece (52) for facilitating the knob on the side away from the expansion end (51).

6. A telescopic fixing structure of a tripod according to claim 3 or 4, characterized in that: The positioning device (00) includes a bolt seat (7) arranged around the fastener (5) outside the fixing sleeve (1).

7. The telescopic fixing structure of a tripod according to claim 1, characterized in that: The fastener (5) and the barrier piece (4) are provided with a limiting device (6) for preventing the barrier piece (4) from sliding.

8. The telescopic fixing structure of a tripod according to claim 7, characterized in that: The limiting device (6) includes an insertion plate (61) inserted into the clamping groove (41), and further includes a cover plate (62) fixedly connected with the insertion plate (61).

9. The telescopic fixing structure of a tripod according to claim 8, characterized in that: The cover plate (62) is provided with a bolt (63), and the barrier piece is provided with a second screw hole (42), and the cover plate (62) and the barrier piece (4) are connected through the bolt (63) and the second screw hole (42).

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