CN211314762U - Height adjusting device - Google Patents

Abstract

The utility model belongs to the technical field of the plotting tool, a height adjusting device is disclosed. The height adjusting device comprises an outer rod and a support component, wherein one end of the support component is configured to be inserted into the ground, and the other end of the support component is connected to the outer rod; the inner rod of the inner rod mechanism is provided with a plurality of positioning holes along the axial direction; the adjusting mechanism comprises a fixing component, a resetting piece and a bolt, wherein the resetting piece and the bolt are arranged in the fixing component in a sliding mode; the bolt is worn to locate in the outer pole part sets up in fixed subassembly, and interior pole stretches into in the outer pole and can follow the axial direction of interior pole and slide, and the bolt is configured to slide along perpendicular to axial direction in fixed subassembly's inside, makes the reference column selectivity of bolt stretch into in one of them locating hole, realizes the locking of position between the reference column of bolt and the locating hole of interior pole, has solved interior pole location back and has rocked the problem to guarantee the accuracy of location.

Description

Height adjusting device

Technical Field

The utility model relates to a mapping tool technical field especially relates to a height adjusting device.

Background

When engineering survey and drawing, generally need adopt two stock that are in under the stack state, when two stock relative sliding under vertical condition, through scram at the height of difference to the different high position of locking, the survey and drawing personnel of being convenient for accomplish three-dimensional coordinate's survey and drawing.

By adopting the mode, the two long rods are easy to slide unsmoothly when moving, and when the long rods are positioned at a high position, the long rods positioned at the high position are easy to shake due to the gap between the two long rods, so that the positioning accuracy is influenced. In addition, need manual the stopping when the stock slides, unable automatic stop, and easy mistake touches, changes the stock state, becomes the slip by static, brings very big inconvenience for the mapping process.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a height adjusting device reduces the condition that rocks appears easily after the stock location, guarantees accurate, quick location.

To achieve the purpose, the utility model adopts the following technical proposal:

a height adjustment device comprising:

an outer lever mechanism including an outer lever and a support assembly having one end configured to be inserted into the ground and the other end connected to the outer lever;

the inner rod mechanism comprises an inner rod, and a plurality of positioning holes are formed in the inner rod along the axial direction of the inner rod;

the adjusting mechanism comprises a fixing component, a resetting piece and a bolt, wherein the resetting piece and the bolt are arranged in the fixing component in a sliding mode;

the outer pole is kept away from one end part of supporting component set up in the fixed subassembly, interior pole wears to locate the bolt, just interior pole stretches into in the outer pole and can follow the axial direction of interior pole slides, the bolt is configured to be in the inside of fixed subassembly is followed the perpendicular to the axial direction slides, makes the reference column selectivity stretches into one of them in the locating hole.

Preferably, the fixing component comprises a fixing seat and a pipe position ring arranged in the fixing seat, the outer rod is arranged between the fixing seat and the pipe position ring, and the inner rod penetrates through the pipe position ring, so that the axis of the outer rod, the axis of the inner rod and the axis of the pipe position ring are collinear.

Preferably, the adjusting mechanism further comprises a button, and the button is arranged on one side of the bolt far away from the reset piece.

Preferably, the adjusting mechanism further includes a toggle, one end of the toggle abuts against the plug pin, and the other end of the toggle penetrates through the fixed seat, and the toggle is configured to slide relative to the fixed seat, so that the plug pin selectively penetrates through the interior of the toggle.

Preferably, one side of the bolt, which is far away from the reset piece, is provided with a limiting bump, the bottom of the shifting buckle is provided with a limiting groove corresponding to the limiting bump, and the limiting bump can selectively penetrate through the limiting groove.

Preferably, the adjusting mechanism further comprises a horizontal adjusting piece, wherein a holding groove is formed in the fixing seat and used for holding the horizontal adjusting piece, and the horizontal adjusting piece is used for adjusting the levelness of the fixing seat.

Preferably, the inner rod mechanism further comprises a limiting ring, a limiting protrusion is arranged on the inner side of the limiting ring, the limiting protrusion is configured to be selectively clamped in one of the positioning holes, and the limiting ring can abut against the pipe position ring and is used for limiting the inner rod.

Preferably, the support assembly comprises a pointed cone and a support rod, one end of the pointed cone is configured to be inserted into the ground, the other end of the pointed cone is connected to the support rod, and one end of the support rod, which is far away from the pointed cone, extends into the outer rod.

Preferably, the outer rod mechanism further comprises a buffer pad, one end of the buffer pad extends into the support rod, the other end of the buffer pad extends into the outer rod, and the buffer pad is used for buffering the inner rod.

Preferably, the height adjusting device further comprises an exhaust mechanism, the exhaust mechanism is arranged at the bottom of the inner rod and is used for exhausting gas between the inner rod and the outer rod mechanism and adjusting the sliding speed of the inner rod.

The utility model has the advantages that:

the utility model provides a height adjusting device wears to locate the bolt and stretches into the outer pole in with interior pole, promotes the bolt along the gliding in-process of perpendicular to axial direction to the direction that is close to fixed subassembly at operating personnel, and bolt extrusion and compression reset piece, at this in-process, the locating hole of pole in the reference column on the bolt inner wall breaks away from, and the position locking between pole and the bolt in removing for interior pole is at the inside axial direction free fall along interior pole of outer pole. When interior pole gliding to required height, operating personnel promotes the bolt along the gliding in-process of perpendicular to axial direction to the direction of keeping away from fixed subassembly to reset under the self restoring force of piece, reset the piece and promote the bolt and remove, make the locating hole of pole in inserting of reference column on the bolt inner wall, realize the position locking between interior pole and the bolt.

Drawings

FIG. 1 is a schematic structural view of the height adjusting device of the present invention;

FIG. 2 is a schematic structural view of a fixing member of the height adjusting device of the present invention;

FIG. 3 is a schematic structural view of an adjusting mechanism of the height adjusting device of the present invention;

fig. 4 is a schematic structural view of the height adjusting device of the present invention after the inner rod mechanism and the adjusting mechanism are assembled;

FIG. 5 is an enlarged view of a portion of FIG. 1 at A;

FIG. 6 is a schematic view of FIG. 4 with the buttons hidden;

fig. 7 is a schematic structural view of an inner rod mechanism and an exhaust mechanism in the height adjustment device of the present invention;

fig. 8 is a schematic structural view of an outer rod mechanism in the height adjustment device of the present invention;

fig. 9 is a schematic structural view of the exhaust mechanism in the height adjustment device of the present invention cooperating with the inner rod mechanism and the outer rod mechanism;

fig. 10 is a schematic structural view of an exhaust mechanism in the height adjustment device of the present invention.

In the figure:

1. an outer lever mechanism; 2. an inner rod mechanism; 3. an adjustment mechanism; 4. an exhaust mechanism;

11. an outer rod; 12. a support assembly; 121. a pointed cone; 122. a support bar; 123. a cushion pad; 124. a protective sleeve;

21. an inner rod; 211. positioning holes; 22. a limiting ring; 221. a limiting bulge; 23. a screw head; 24. a gasket;

31. a fixing assembly; 32. a reset member; 33. a bolt; 34. a button; 35. pulling out a buckle; 36. a horizontal adjustment member; 37. an O-shaped ring;

311. a fixed seat; 312. a pipe position ring; 313. a dust cover;

3111. accommodating grooves; 3112. a first through hole; 3113. a waist-shaped hole;

3131. a second through hole; 3132. a buckle structure;

331. a positioning column; 332. a limiting bump; 333. a circular groove; 334. a third through hole; 351. a limiting groove;

41. an exhaust seat; 42. an exhaust member; 43. controlling the pressure ball;

411. a strip-shaped hole; 421. a partition plate; 422. an upper cavity; 423. a lower cavity; 4211. and (4) exhausting holes.

Detailed Description

In order to make the technical problems, technical solutions and technical effects achieved by the present invention more clear, the embodiments of the present invention will be described in further detail with reference to the accompanying drawings, and obviously, the described embodiments are only some embodiments, not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.

The embodiment provides a height adjusting device, is applicable to engineering survey and drawing field. As shown in fig. 1, the height adjusting device includes: outer rod mechanism 1, interior rod mechanism 2 and adjustment mechanism 3, outer rod mechanism 1 includes outer pole 11 and supporting component 12, and the one end of supporting component 12 is configured to insert ground, and the other end is connected in outer pole 11, and supporting component 12 has played the effect of whole support. Interior pole mechanism 2 includes interior pole 21, and interior pole 21 mainly used plays the effect of high sign, is provided with a plurality of locating holes 211 on interior pole 21 along its axial direction, and locating hole 211 specifically is the round hole structure, and every locating hole 211 represents different height position, for example: 1.2 meters, 1.4 meters, 1.6 meters, etc.

The adjusting mechanism 3 is used for locking the positions of the inner rod 21 at different heights after freely falling, as shown in fig. 1-2, the adjusting mechanism 3 includes a fixing component 31, and a resetting member 32 and a plug 33 slidably disposed inside the fixing component 31, the resetting member 32 may be a spring, two ends of the resetting member 32 respectively abut against the inner wall of the fixing component 31 and the plug 33, and a positioning column 331 is disposed on the inner wall of the plug 33. One end part of the outer rod 11, which is far away from the supporting component 12, is disposed in the fixing component 31, the inner rod 21 is inserted into the plug 33, the inner rod 21 extends into the outer rod 11 and can slide along the axial direction of the inner rod 21, and the plug 33 is configured to slide along the direction perpendicular to the axial direction inside the fixing component 31, so that the positioning column 331 selectively extends into one of the positioning holes 211.

In the height adjusting device provided by this embodiment, the inner rod 21 is inserted into the plug 33 and extends into the outer rod 11, and when the operator pushes the plug 33 to slide in the direction approaching the fixing component 31 along the direction perpendicular to the axial direction, the plug 33 presses and compresses the reset piece 32, and in this process, the positioning column 331 on the inner wall of the plug 33 is separated from the positioning hole 211 of the inner rod 21, so as to release the position lock between the inner rod 21 and the plug 33, and the inner rod 21 freely falls along the axial direction of the inner rod 21 inside the outer rod 11. When the inner rod 21 slides downwards to a required height, an operator pushes the bolt 33 to slide along a direction perpendicular to the axial direction and away from the fixing component 31, and under the self-restoring acting force of the compressed restoring piece 32, the restoring piece 32 pushes the bolt 33 to move, so that the positioning column 331 on the inner wall of the bolt 33 is inserted into the positioning hole 211 of the inner rod 21, and the position locking between the inner rod 21 and the bolt 33 is realized.

Compared with the prior art, the mode is adopted, free switching can be carried out between the static mode and the sliding mode, locking and unlocking of the positions between the positioning column 331 of the bolt 33 and the positioning hole 211 of the inner rod 21 are realized through mutual matching of the reset piece 32 and the bolt 33, the problem of shaking after the positioning of the inner rod 21 is solved, the accuracy and the rapidity of height positioning are guaranteed, and the requirements for different height positions are met.

Further, as shown in fig. 2, the fixing assembly 31 includes a fixing base 311 and a dust cover 313, the fixing base 311 has a fixing and supporting function, a first through hole 3112 is formed in the fixing base 311, the dust cover 313 has a dust-proof function, the dust cover 313 is disposed in the first through hole 3112, a second through hole 3131 is formed in the dust cover 313, the second through hole 3131 is used for penetrating the inner rod 21, and a mark area is disposed on one side of the dust cover 313 and used for laser engraving or silk printing characters. Optionally, in order to achieve the fixation between the dust cover 313 and the fixing base 311, a snap structure 3132 is disposed on an outer wall of the dust cover 313, a latch is disposed on an inner wall of the fixing base 311 corresponding to the snap structure 3132, and the snap structure 3132 is snapped into the latch to ensure the connection stability between the dust cover 313 and the fixing base 311.

In order to ensure the levelness of the fixing seat 311 relative to the horizontal plane, as shown in fig. 2, the adjusting mechanism 3 further includes a horizontal adjusting member 36 and an O-ring 37, a receiving groove 3111 is formed on the fixing seat 311, the receiving groove 3111 is used for receiving the horizontal adjusting member 36 and the O-ring 37, the O-ring 37 plays a role in sealing between the horizontal adjusting member 36 and the receiving groove 3111, the horizontal adjusting member 36 is fixed in the receiving groove 3111 through a first screw, and the horizontal adjusting member 36 is used for adjusting the levelness of the fixing seat 311. Specifically, the horizontal adjusting member 36 is specifically an adjusting block, and air bubbles are hermetically arranged in the adjusting block, and according to the shape of the air bubbles, whether the fixed seat 311 is inclined or the inclination angle is determined. For example, if the air bubble has a standard circular structure, the fixing base 311 is approximately horizontal, and if the air bubble has an oblong structure, the inclination angle of the fixing base 311 is finely adjusted according to the direction in which the air bubble is elongated until the air bubble returns to the standard circular structure again, thereby ensuring the levelness of the fixing base 311 with respect to the horizontal plane.

After the assembly of the dust cover 313 and the horizontal adjusting member 36 is completed, the assembly between the latch 33, the restoring member 32, and the fixing base 311 needs to be completed. Specifically, as shown in fig. 3, a circular groove 333 is formed in one side of the latch 33 close to the reset piece 32 along a direction perpendicular to the axial direction of the inner rod 21, and the circular groove 333 is used for accommodating the reset piece 32, so that two ends of the reset piece 32 respectively abut against the inner wall of the fixing seat 311 and the bottom wall of the circular groove 333. A third through hole 334 is formed in the middle of the plug 33, the third through hole 334 is used for the inner rod 21 to pass through, the positioning column 331 is specifically disposed on the inner wall of the third through hole 334, and a limit protrusion 332 is disposed on one side of the plug 33 away from the reset element 32.

In order to facilitate the operation and control of the moving direction of the bolt 33, optionally, as shown in fig. 3, the adjusting mechanism 3 further includes a button 34, the button 34 is disposed on a side of the bolt 33 away from the reset member 32, and the button 34 is fixed on the bolt 33 by two second screws and nuts, so that the stability is good.

Because interior pole 21 is at the slip in-process, button 34 maloperation appears easily and change the state of interior pole 21, in order to solve this problem, as shown in fig. 4, adjustment mechanism 3 still includes dials the knot 35, has seted up waist shape hole 3113 in one side that fixing base 311 is close to button 34, the one end butt of dialling knot 35 in bolt 33, the waist shape hole 3113 of fixing base 311 is worn to locate by the other end, dial knot 35 and fix in fixing base 311 through the joint knot structure of self, and dial the inner wall that knot 35 can follow waist shape hole 3113 and slide. An operator can toggle the toggle button 35 to slide relative to the fixed seat 311, so that the plug 33 can selectively penetrate through the interior of the toggle button 35.

Specifically, as shown in fig. 5 to 6, a limit protrusion 332 is disposed on a side of the bolt 33 away from the reset element 32, a limit groove 351 is disposed at a bottom of the bolt 33 corresponding to the limit protrusion 332, and the limit protrusion 332 can selectively penetrate through the limit groove 351. When the button 34 needs to be operated, the toggle button 35 is toggled to the upper end position, the limit groove 351 of the toggle button 35 and the limit bump 332 of the plug pin 33 are arranged right opposite to each other, the limit groove 351 can be freely penetrated through by the limit bump 332, an operator presses the button 34 and pushes the plug pin 33 to slide towards the direction close to the inner rod 21, the plug pin 33 extrudes and compresses the reset piece 32, the positioning column 331 of the plug pin 33 is separated from the positioning hole 211 of the inner rod 21, and the inner rod 21 is unlocked. Conversely, the operator presses the button 34 again, and under the restoring action force of the compressed restoring member 32, the restoring member 32 pushes the latch 33 to slide reversely until the positioning column 331 of the latch 33 is inserted into the positioning hole 211 of the inner lever 21, so as to lock the position of the inner lever 21.

In order to avoid misoperation, the toggle button 35 is toggled to the lower end position, the limiting groove 351 of the toggle button 35 and the limiting convex block 332 of the plug pin 33 are not arranged rightly, interference occurs between the limiting convex block 332 and the limiting groove 351, the toggle button 35 plays a role in blocking at intervals, even if an operator presses the button 34 at the moment, the plug pin 33 cannot be operated, the position of the plug pin 33 cannot move, and therefore the situation that the button 34 is touched wrongly is prevented. Because there is certain interference volume between the shifting buckle 35 and the bolt 33, and then the bolt 33 can exert certain external force to the inner rod 21, plays the fastening effect to the inner rod 21, further reduces the condition that the inner rod 21 rocks easily.

Since the inner rod 21 freely falls in the outer rod 11, the deviation of the axes of the two will affect the accuracy of the final positioning. In order to solve the problem, as shown in fig. 5, the adjusting mechanism 3 further includes a tube position ring 312 disposed inside the fixing seat 311, the outer rod 11 is disposed between the fixing seat 311 and the tube position ring 312, and the inner rod 21 is disposed through the tube position ring 312. The upper end of pipe position ring 312 is provided with the turn-ups, and pipe position ring 312 sets up in the upper end of outer pole 11, and the turn-ups butt in the up end of outer pole 11 for spacing between pipe position ring 312 and the outer pole 11, then fix outer pole 11 in fixing base 311 through glue, later wear to locate pipe position ring 312 with interior pole 21 again. By arranging the pipe position ring 312 between the outer rod 11 and the inner rod 21, the axis of the outer rod 11, the axis of the inner rod 21 and the axis of the pipe position ring 312 are collinear, the coaxiality of the inner rod 21 and the outer rod 11 during sliding is ensured, and the sliding smoothness of the inner rod 21 is ensured.

Further, in order to limit the sliding process of the inner rod 21, as shown in fig. 7, the inner rod mechanism 2 further includes a limiting ring 22, a limiting protrusion 221 is disposed on an inner side of the limiting ring 22, and the limiting protrusion 221 is configured to be selectively clamped in one of the positioning holes 211. The limiting ring 22 is tightly matched with the positioning hole 211 of the inner rod 21 through the two limiting protrusions 221 of the limiting ring 22, so that the limiting ring 22 is fixed on the inner rod 21, and the limiting ring 22 can abut against the pipe position ring 312 and is used for limiting the inner rod 21. In addition, the inner rod mechanism 2 further comprises a threaded head 23 and a washer 24, wherein the threaded head 23 is in threaded connection with the top of the inner rod 21 through the washer 24, so that the threaded head 23 and the inner rod 21 form a complete structure.

Further, as shown in fig. 8, the supporting component 12 of the external lever mechanism 1 includes a pointed cone 121, a supporting lever 122, a cushion pad 123 and a protective sleeve 124, when in use, one end of the pointed cone 121 is configured to be inserted into the ground and functions as a fulcrum, and the other end of the pointed cone 121 is connected to the supporting lever 122; when not using, protective sheath 124 passes through threaded connection on pointed cone 121, easy to assemble and dismantlement, and protective sheath 124 plays the effect of protection, prevents to injure other people by mistake. One end of the supporting rod 122 far away from the pointed cone 121 extends into the outer rod 11, and specifically, the other end of the pointed cone 121 is fixed on the supporting rod 122 through threads, so that the installation and maintenance are convenient, and great convenience is brought to the replacement.

One end of the buffer pad 123 extends into the support rod 122, the other end extends into the outer rod 11, and the outer rod 11 is sleeved outside the support rod 122 through glue. Specifically, the cushion pad 123 is in interference fit with the support rod 122 in an inverted manner, and has good structural stability. When the inner rod 21 slides down rapidly relative to the outer rod 11, the buffer pad 123 is used for buffering the inner rod 21, and plays roles of speed reduction and noise reduction. After the assembly of the outer rod mechanism 1 is completed, the pipe position ring 312 can be installed in the outer rod 11, and the outer rod 11 is fixed in the fixing seat 311 by glue, so that the assembly of the outer rod mechanism 1 and the fixing seat 311 is completed.

Because at interior pole 21 for outer pole 11 quick gliding in-process, along with interior pole 21 and the distance reduction between outer pole 11, interior pole 21 can compress the gas between interior pole 21 and the outer pole 11, the gas of compressed can exert an influence to the gliding of interior pole 21. In order to solve this problem, as shown in fig. 9, the height adjustment device further includes an air discharge mechanism 4, the air discharge mechanism 4 is disposed at the bottom of the inner rod 21, and the air discharge mechanism 4 is configured to discharge air between the inner rod 21 and the outer rod mechanism 1 and is capable of adjusting the sliding speed of the inner rod 21.

Specifically, as shown in fig. 9 to 10, the exhaust mechanism 4 includes an exhaust seat 41 and an exhaust member 42, the exhaust member 42 is fixed to the inner rod 21 by a screw, the exhaust member 42 extends into the exhaust seat 41 from above the exhaust seat 41, and the exhaust seat 41 can abut against the cushion pad 123 to perform buffering and deceleration. The exhaust seat 41 is uniformly provided with three strip-shaped holes 411 along the circumferential direction, the central position of the exhaust seat 41 is provided with the pressure control ball 43, the three strip-shaped holes 411 are arranged around the pressure control ball 43 in a surrounding manner, the pressure control ball 43 is made of elastic materials such as soft rubber, and the pressure control ball 43 can move up and down under the action of air pressure. The exhaust member 42 is of a hollow structure, the cavity of the exhaust member 42 is divided into an upper cavity 422 and a lower cavity 423 by a partition 421, the lower cavity 423 is of a conical structure, the large end of the conical structure faces the pressure control ball 43, an exhaust hole 4211 is arranged on the partition 421, the exhaust hole 4211 is of a conical hole structure, the large end of the exhaust hole 4211 faces the direction far away from the pressure control ball 43, and the lower cavity 423 is communicated with the upper cavity 422 through the exhaust hole 4211.

As shown in fig. 9-10, when the inner rod 21 slides down rapidly relative to the outer rod 11, the outer walls of the exhaust seat 41 and the exhaust member 42 are in sliding fit with the inner wall of the outer rod 11, so as to ensure smooth sliding. Along with the distance between exhaust seat 41 and the cushion 123 reduces, interior pole 21 can compress the gas between exhaust seat 41 and the cushion 123 both, the gas that is compressed enters into cavity 423 down through bar hole 411, if gaseous atmospheric pressure is greater than external atmospheric pressure this moment, accuse pressure ball 43 can upwards float, make cavity 423 and accuse pressure ball 43 down between the distance reduce, and under the guide effect of the inner wall of the conical structure of cavity 423 down, the effect to the gas throttle has been played, the gas volume that gets into exhaust hole 4211 and upper cavity 422 has been reduced, the gas that flows out from upper cavity 422 discharges to the atmosphere through the locating hole 211 of interior pole 21, the effect of pressure release has been played. By adopting the mode, the control of the exhaust speed and the air pressure of the cavity is realized to control the gliding speed of the inner rod 21, so that the inner rod 21 is ensured to glide at a constant speed, and the safety is good.

In the description herein, it is to be understood that the terms "upper", "lower", "right", and the like are used in an orientation or positional relationship based on that shown in the drawings for convenience of description and simplicity of operation, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used merely for descriptive purposes and are not intended to have any special meaning.

In the description herein, references to the description of "an embodiment," "an example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.

In addition, the foregoing is only the preferred embodiment of the present invention and the technical principles applied thereto. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.

Claims (10)

1. A height adjustment device, comprising:

an outer lever mechanism (1), the outer lever mechanism (1) comprising an outer lever (11) and a support assembly (12), one end of the support assembly (12) being configured to be inserted into the ground, the other end being connected to the outer lever (11);

the inner rod mechanism (2), the inner rod mechanism (2) comprises an inner rod (21), and a plurality of positioning holes (211) are formed in the inner rod (21) along the axial direction of the inner rod;

the adjusting mechanism (3) comprises a fixing component (31), a resetting piece (32) and a bolt (33), wherein the resetting piece (32) and the bolt (33) are arranged in the fixing component (31) in a sliding mode, two ends of the resetting piece (32) are respectively abutted to the inner wall of the fixing component (31) and the bolt (33), and a positioning column (331) is arranged on the inner wall of the bolt (33);

outer pole (11) are kept away from one end part of supporting component (12) set up in fixed subassembly (31), interior pole (21) wear to locate bolt (33), just interior pole (21) stretch into in outer pole (11) and can follow the axial direction of interior pole (21) slides, bolt (33) are configured to be in the inside of fixed subassembly (31) is along the perpendicular to the axial direction slides, makes reference column (331) selectivity stretches into one of them in locating hole (211).

2. The height adjusting device according to claim 1, wherein the fixing assembly (31) comprises a fixing seat (311) and a pipe position ring (312) arranged inside the fixing seat (311), the outer rod (11) is arranged between the fixing seat (311) and the pipe position ring (312), and the inner rod (21) is arranged through the pipe position ring (312) so that the axis of the outer rod (11), the axis of the inner rod (21) and the axis of the pipe position ring (312) are collinear.

3. Height adjustment device according to claim 2, wherein the adjustment mechanism (3) further comprises a button (34), the button (34) being arranged on a side of the latch (33) remote from the reset element (32).

4. The height adjusting device according to claim 3, wherein the adjusting mechanism (3) further comprises a toggle button (35), one end of the toggle button (35) abuts against the plug pin (33), and the other end of the toggle button passes through the fixed seat (311), and the toggle button (35) is configured to slide relative to the fixed seat (311) so that the plug pin (33) selectively passes through the interior of the toggle button (35).

5. The height adjusting device according to claim 4, characterized in that a limit protrusion (332) is arranged on one side of the bolt (33) far away from the reset piece (32), a limit groove (351) is arranged at the bottom of the toggle button (35) corresponding to the limit protrusion (332), and the limit protrusion (332) can be selectively arranged in the limit groove (351).

6. The height adjusting device according to claim 2, wherein the adjusting mechanism (3) further comprises a horizontal adjusting member (36), a receiving groove (3111) is formed on the fixing base (311), the receiving groove (3111) is used for receiving the horizontal adjusting member (36), and the horizontal adjusting member (36) is used for adjusting the levelness of the fixing base (311).

7. The height adjusting device according to claim 2, wherein the inner rod mechanism (2) further comprises a limiting ring (22), a limiting protrusion (221) is arranged on the inner side of the limiting ring (22), the limiting protrusion (221) is configured to be selectively clamped in one of the positioning holes (211), and the limiting ring (22) can abut against the pipe position ring (312) for limiting the inner rod (21).

8. The height adjustment device according to claim 1, wherein the support assembly (12) comprises a pointed cone (121) and a support rod (122), one end of the pointed cone (121) is configured to be inserted into the ground, the other end is connected to the support rod (122), and one end of the support rod (122) far away from the pointed cone (121) extends into the outer rod (11).

9. Height adjustment device according to claim 8, wherein the outer bar mechanism (1) further comprises a buffer (123), one end of the buffer (123) extends into the support bar (122) and the other end extends into the outer bar (11), the buffer (123) is used for buffering the inner bar (21).

10. The height adjusting device according to claim 1, further comprising a gas exhaust mechanism (4), wherein the gas exhaust mechanism (4) is disposed at the bottom of the inner rod (21), and the gas exhaust mechanism (4) is used for exhausting gas between the inner rod (21) and the outer rod mechanism (1) and can adjust the sliding speed of the inner rod (21).

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