Measuring rod floating structure

Abstract

A measuring rod floating structure comprises a movable block, the peripheral surface of the movable block is a conical surface, and one end of the movable block is used for fixedly installing a measuring rod; the limiting seat is fixedly mounted at the moving end of the measuring equipment moving mechanism, a conical through hole is formed in the limiting seat, and the through hole is matched with the peripheral surface of the movable block; the driving rod is in transmission connection with the other end of the movable block, and the driving rod is used for driving the movable block to move in the through hole, so that the distance between the peripheral surface of the movable block and the inner wall surface of the through hole is changed; when the distance is larger than zero, the movable block can swing in the through hole under the action of external force, and when the peripheral face of the movable block makes contact with the inner wall face of the through hole, the movable block is fixedly connected with the through hole. Therefore, the overall size of the measuring equipment is reduced, the measuring rod is ensured to have a floating function, the directivity of the measuring rod before entering the measured hole is improved, the positioning precision of the measuring rod is convenient to control, and collision in the measuring process is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to measuring equipment technical field especially, it is a kind of measuring rod floating structure. BACKGROUND

[0002] With the rapid development of measurement technology and the improvement of automation production level, the measurement of hole diameter in part machining process is also gradually realized automation.In the automatic measurement process of hole diameter, the measuring rod is often needed to be inserted into the measured hole for measurement.Because the diameter of the measuring rod is generally slightly smaller than the inner diameter of the measured hole, and the machining accuracy and position accuracy of the measured hole on the part are different, in order to ensure that the measuring rod can be smoothly inserted into the measured hole, the measuring rod needs to be floatingly installed on the moving mechanism of the measuring equipment, so that the measuring rod can float with the position of the hole when inserted into the measured hole.

[0003] For the measuring equipment of measuring horizontal hole, such as measuring horizontal long hole (crank hole) on cylinder structure, the measuring rod belongs to large measuring body, in order to realize the floating function of the measuring rod, lever structure is used to suspend the measuring rod on the moving mechanism, and counterweight balance block is used to balance the gravity of the suspended measuring rod.

[0004] The above measuring rod floating structure has the following disadvantages:

[0005] 1, the counterweight structure occupies a larger space;

[0006] 2, because of the setting of counterweight structure, the overall weight of the measuring equipment and the manufacturing cost are increased, and at the same time, the floating resistance of the measuring rod in the measured hole is also increased, which may seriously wear the inner wall of the measured hole, and cannot meet the high quality requirement of hole wall;

[0007] 3, the positioning accuracy of the measuring rod in floating state before being inserted into the measured hole is difficult to control, and it is easy to knock with the hole of the part, which has high requirements for equipment installation and debugging. INVENTION CONTENTS

[0008] In view of the above-mentioned shortcomings in the prior production technology, the present application provides a measuring rod floating structure, thereby reducing the overall size of the measuring equipment, ensuring that the measuring rod has floating function, improving the directivity of the measuring rod before entering the measured hole, facilitating the control of the positioning accuracy of the measuring rod, and avoiding knocking during measurement.

[0009] The technical scheme adopted by the utility model is as follows:

[0010] A kind of measuring rod floating structure, comprising

[0011] movable block, the outer peripheral surface of the movable block is a conical surface, one end of the movable block is used to fixedly install the measuring rod;

[0012] A limiting seat is fixedly installed at the moving end of the moving mechanism of the measuring device, and a tapered through hole is arranged on the limiting seat, which matches the outer circumferential surface of the movable block;

[0013] A driving rod is in transmission connection with the other end of the movable block, and is used to drive the movable block to move in the through hole, so as to change the distance between the outer circumferential surface of the movable block and the inner wall surface of the through hole.

[0014] When the distance is greater than zero, the movable block can swing in the through hole under the action of an external force, and the movable block is fixedly connected with the through hole when the outer circumferential surface of the movable block contacts the inner wall surface of the through hole.

[0015] As a further improvement of the above technical solution:

[0016] The conical surface is a conical surface, the through hole is a conical hole, the movable block is at least two pieces, and is arranged side by side, one end of all movable blocks is fixedly connected with the measuring rod, and the other end of all movable blocks is in transmission connection with the driving rod.

[0017] The outer circumferential surface of the movable block is in the shape of a four-pyramid, at least two adjacent planes of the outer circumferential surface of the movable block intersect with the axis of the through hole, the through hole is in the shape of a four-pyramid, and the number of the movable block and the limiting seat is one.

[0018] The four-pyramid is a regular four-pyramid, the angle between the inclined surface of the four-pyramid and the axis of the through hole is 2°-5°, and the maximum average gap between the through hole and the movable block is 0.4mm-0.8mm.

[0019] The axis of the driving rod is arranged at an angle with the axis of the through hole, a pair of parallel guide inclined surfaces are arranged on the driving rod, a pair of guide rods are arranged on the movable block, the driving rod is located between the two guide rods, each guide rod is in sliding fit with a guide inclined surface, and when the driving rod moves, the guide rods slide on the guide inclined surfaces to drive the movable block to move in the through hole.

[0020] Further comprising a mounting seat, the mounting seat is fixedly installed with the limiting seat, the mounting seat is provided with a guide hole, and the driving rod is in sliding connection with the guide hole.

[0021] The guide rod is in a cylindrical structure.

[0022] The axis of the driving rod is perpendicular to the axis of the through hole.

[0023] Further comprising a linear driver, the moving end of the linear driver is connected with the driving rod, and is used to drive the driving rod to move along the axis direction of the driving rod.

[0024] The structure of the limiting seat comprises four limiting plates, bosses are arranged on upper surfaces of the limiting plates, the four limiting plates are sequentially connected to form an annular structure, upper surfaces of the four bosses are sequentially connected to form the through hole.

[0025] The beneficial effects of the utility model are as follows:

[0026] The utility model discloses compact structure, reasonable, convenient operation, through the cooperation mode of setting movable block and limiting seat is tapered hole cooperation structure, adopts drive rod and drives movable block to move in the limiting seat, changes the gap between movable block and limiting seat, and then makes the measuring rod can have the circumferential floating amount, can also be fixedly connected with the moving end of the moving mechanism, guarantees that the measuring rod has the floating function, improves the directivity before the measuring rod enters the measured hole, is convenient for the control of measuring rod positioning accuracy, avoids the knock in the measurement process.

[0027] The utility model also includes the following advantages:

[0028] (1) the tapered hole cooperation structure of conical type is convenient for processing, and the other two sets and above tapered hole cooperation structures guarantee the angular position of the measuring rod and limit the rotation of the measuring rod.

[0029] (2) through one four-pyramid type shaft hole cooperation structure, the floating and fixed of the measuring rod are realized, and the angular limiting of the measuring rod is realized, and the number of parts in the structure is simplified and reduced.

[0030] (3) through the small taper design of four-pyramid and the guiding slope of drive rod drives movable block to move perpendicularly to the drive rod axis direction, the tiny gap between the through hole and movable block is enlarged twice, and is converted into the axial displacement of drive rod, is convenient for the action of drive rod through the mechanism control, realizes the tiny floating allowance control of the measuring rod, also is convenient for realizing the automatic control. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 It is the structural schematic diagram (sectional view) of the utility model.

[0032] Figure 2 It is Figure 1 It is the local enlarged view of A in the middle.

[0033] Figure 3 It is the action schematic diagram of the utility model.

[0034] Figure 4 It is the perspective view of the utility model.

[0035] Figure 5 It is the assembly structure schematic diagram of movable block and of the utility model.

[0036] Figure 6 It is the assembly structure explosion drawing of movable block and of the utility model.

[0037] Figure 7 It is the assembly drawing (another view) of the movable block and the assembly structure of the utility model.

[0038] Figure 8 It is the structure schematic view of the limiting seat of the utility model.

[0039] Figure 9 It is the structure schematic view of the adapter of the utility model.

[0040] Figure 10 It is the structure schematic view (another view) of the adapter of the utility model.

[0041] Among them:

[0042] 1, measuring rod; 2, adapter; 21, first connecting flange; 22, extension pipe; 23, perforation; 24, second connecting flange;

[0043] 3, mounting seat; 31, guide hole;

[0044] 4, limiting seat; 40, through hole; 41, limiting plate; 42, boss;

[0045] 5, drive rod; 51, guide inclined surface;

[0046] 6, movable block; 61, guide rod; 62, avoiding groove. DETAILED DESCRIPTION

[0047] The specific implementation of the utility model will be described below in combination with the drawings.

[0048] Example one:

[0049] As shown in the drawings, the measuring rod floating structure of the embodiment includes movable block 6, limiting seat 4 and drive rod 5. Figures 1-4

[0050] Movable block 6, the outer peripheral surface of movable block 6 is a conical surface, one end of movable block 6 is used for fixedly installing measuring rod 1;

[0051] Limiting seat 4, fixedly installed at the moving end of the measuring device moving mechanism, the limiting seat 4 is provided with a conical through hole 40, and the through hole 40 is matched with the outer peripheral surface of movable block 6;

[0052] Drive rod 5, the other end of drive rod 5 is in transmission connection with movable block 6, and drive rod 5 is used for driving movable block 6 to move in the through hole 40, thereby changing the distance between the outer peripheral surface of movable block 6 and the inner wall surface of the through hole 40;

[0053] ​When the gap is greater than zero, the movable block 6 can swing in the through hole 40 under the action of an external force, and the movable block 6 is fixedly connected with the through hole 40 when the outer peripheral surface of the movable block 6 is in contact with the inner wall surface of the through hole 40.

[0054] The hole of the measuring hole generally has a chamfer structure, and the end of the measuring rod 1 also has a chamfer structure.

[0055] The contact mode between the outer peripheral surface of the movable block 6 and the inner wall surface of the through hole 40 is surface contact, and after the movable block 6 is fixedly connected with the through hole 40, the measuring rod 1 is fixedly connected with the moving end of the moving mechanism, so that the end of the measuring rod 1 can be precisely positioned with the measuring hole, and the chamfer structure can assist the end of the measuring rod 1 to enter the hole of the measuring hole.

[0056] When the gap between the outer peripheral surface of the movable block 6 and the inner wall surface of the through hole 40 is greater than zero, the measuring rod 1 is in a floating state, and when the end of the measuring rod 1 enters the hole of the measuring hole, the measuring rod 1 is in a floating state, so that the measuring rod 1 can change with the position of the measuring hole.

[0057] The cooperation mode between the movable block 6 and the limiting seat 4 is a taper hole cooperation structure, the movable block 6 is driven to move in the limiting seat 4 by the driving rod 5, the gap between the movable block 6 and the limiting seat 4 is changed, and then the measuring rod 1 can have a circumferential floating amount or be fixedly connected with the moving end of the moving mechanism, so that the measuring rod has a floating function, the directivity of the measuring rod before entering the measured hole is improved, the positioning accuracy of the measuring rod is controlled, and bumping during measurement is avoided.

[0058] In another specific embodiment, the measuring hole can also be a horizontal long hole. The moving mechanism of the measuring device is used to drive the measuring rod 1 to move in the horizontal direction, and then to enter and exit the measuring hole. When the measuring hole is a horizontal long hole, the inner wall surface of the through hole 40 supports the movable block 6 in the vertical direction, that is, the movable block 6 is supported by the lower inner wall surface of the through hole 40 and is located in the vertical plane, and the direction is upward, and the specific direction can be vertical upward or have a certain angle with the vertical direction.

[0059] Embodiment two:

[0060] On the basis of embodiment one, the taper surface of the measuring rod floating structure of the embodiment is a conical surface, the through hole 40 is a conical hole, the movable block 6 is at least two pieces and is arranged side by side, one end of all the movable blocks 6 is fixedly connected with the measuring rod 1, and the other end of all the movable blocks 6 is simultaneously transmissionally connected with the driving rod 5.

[0061] The taper hole cooperation structure of the conical type is convenient for processing, and the two or more taper hole cooperation structures ensure the angular position of the measuring rod 1 and limit the rotation of the measuring rod 1.

[0062] Embodiment three:

[0063] For example, Figures 1-7As shown, the outer circumferential surface of the movable block 6 of the measuring rod floating structure of the embodiment is in the shape of a quadrangular pyramid, at least two adjacent planes of the outer circumferential surface of the movable block 6 intersect with the axis of the through hole 40, the through hole 40 is in the shape of a quadrangular pyramid, and the number of the movable block 6 and the number of the limiting seat 4 are both one.

[0064] At least two adjacent planes of the outer circumferential surface of the movable block 6 intersect with the axis of the through hole 40, that is, at least two adjacent planes of the four planes of the quadrangular pyramid intersect with the axis of the through hole 40, when the movable block 6 moves in the through hole 40, the outer circumferential surface of the movable block 6 is in complete contact with the inner wall surface of the through hole 40, thereby achieving axial limiting and circumferential limiting of the movable block 6, so that the movable block 6 cannot swing in the through hole 40, and the measuring rod 1 is further fixed.

[0065] The axis of the through hole 40 is in the horizontal direction, the lower inner wall surface of the through hole 40 is located directly below the movable block 6 and supports the movable block 6 in the vertical direction. Through the quadrangular pyramid type shaft hole matching structure, the floating and fixing of the measuring rod 1 are achieved, and the angular limiting of the measuring rod 1 is achieved, thereby simplifying and reducing the number of components in the structure.

[0066] The floating structure of the measuring rod 1 is small and easy to integrate into a measuring device, and is convenient for arranging multiple measuring rods 1 side by side in a narrow space.

[0067] The measuring hole of the embodiment can be a vertical hole, and the installation and movement direction of the measuring rod 1 is in the vertical direction.

[0068] Further, the quadrangular pyramid is a regular quadrangular pyramid, the included angle θ between the inclined surface of the quadrangular pyramid and the axis of the through hole 40 is 2°-5°, and the maximum average gap D between the through hole 40 and the movable block 6 is 0.4mm-0.8mm.

[0069] As shown in the drawings, Figure 2 the quadrangular pyramid is a regular quadrangular pyramid, the outer circumferential surface of the movable block 6 is in the shape of a regular quadrangular pyramid, the through hole 40 is also in the shape of a quadrangular pyramid, when the axis of the through hole 40 geometrically coincides with the axis of the quadrangular pyramid, the distance between the outer circumferential surface of the movable block 6 and the inner wall surface of the through hole 40 is equal, the distance between the outer circumferential surface of the movable block 6 and the inner wall surface of the through hole 40 is an average gap, and the circumferential movement range of the movable block 6 is uniformly distributed.

[0070] The measuring rod floating structure of the embodiment is applied to the measuring rod 1 measuring a horizontal long hole belonging to a large measuring body, when the measuring rod 1 is in a floating state in the measuring hole, the pressure of the end of the measuring rod 1 on the inner hole is smaller than that of the counterweight type floating structure, the friction of the measuring rod 1 when moving in the measuring hole is reduced, and the measuring rod 1 is prevented from scratching the measuring hole.

[0071] For example, as shown in the drawings, Figure 2 , Figure 3As shown, θ = 3°, D = 0.5mm, the driving rod 5 drives the moving distance of the movable block 6 is L = 10mm.

[0072] Generally, the size accuracy and position accuracy of the hole is within 1mm, the length of the measuring rod 1 is generally 500mm-1000mm, when controlling the swing range of the installation end of the measuring rod 1, the swing range of the end of the measuring rod 1 can be controlled by controlling the inclination of the inclined surface of the quadrangular pyramid and the maximum average gap D between the through hole 40 and the movable block 6.

[0073] For example, as shown in Figure 1 , Figure 2 the length of the measuring rod 1 is 750mm, D is 0.5mm, the moving allowance of the end of the measuring rod 1 in the horizontal direction is controlled within 0.5mm, and the vertical swing range is controlled within about 0.5-1mm. The floating allowance of the measuring rod 1 is adapted to the size accuracy and position accuracy of the hole to be measured.

[0074] Embodiment Four:

[0075] On the basis of the above embodiments, the axis of the driving rod 5 is arranged at an angle with the axis of the through hole 40, a pair of parallel guide inclined surfaces 51 are arranged on the driving rod 5, a pair of guide rods 61 are arranged on the movable block 6, the driving rod 5 is located between the two guide rods 61, each guide rod 61 is in sliding cooperation with a guide inclined surface 51, when the driving rod 5 moves, the guide rod 61 slides on the guide inclined surface 51, and the movable block 6 moves in the through hole 40.

[0076] The axis of the driving rod 5 is perpendicular to the axis of the through hole 40.

[0077] For example, as shown in Figure 2 the angle α between the guide inclined surface 51 and the axis of the driving rod 5 is 10°-15°. The guide inclined surface 51 amplifies the moving distance L by 3.7-5.5 times, which is converted into the moving distance H of the driving rod 5.

[0078] Through the small taper design of the quadrangular pyramid and the guide inclined surface 51 of the driving rod 5 driving the movable block 6 to move vertically to the axis direction of the driving rod 5, the small gap between the through hole 40 and the movable block 6 is amplified twice and converted into the axial displacement of the driving rod 5, which is convenient for controlling the action of the driving rod 5 through the mechanism, realizing the small floating allowance control of the measuring rod 1, and also convenient for realizing automatic control.

[0079] Further, the measuring rod floating structure further comprises a mounting seat 3, the mounting seat 3 is fixedly installed with a limiting seat 4, the mounting seat 3 is provided with a guide hole 31, and the driving rod 5 is in sliding connection with the guide hole 31. The mounting seat 3 is fixedly installed on the moving end of the moving mechanism of the measuring equipment.

[0080] The mounting seat 3 of the installation limiting seat 4 and the driving rod 5 is set, the driving rod 5, the movable block 6 and the limiting seat 4 are integratedly designed, and the overall modularization of the installation structure of the measuring rod 1 is facilitated.

[0081] The movable block 6 is provided with an avoiding groove 62 for avoiding the driving rod 5, and the avoiding groove 62 is provided with a guide rod 61.

[0082] Further, as shown in Figure 2 、 Figure 3 The guide rod 61 is a cylindrical structure, the contact area of the guide rod 61 and the guide inclined surface 51 is reduced, the two are linearly contacted, and the movable block 6 is facilitated to move relative to the guide rod 61.

[0083] Further, the measuring rod floating structure further comprises a linear driver, and the moving end of the linear driver is connected with the driving rod 5 and used for driving the driving rod 5 to move along the axial direction of the driving rod 5.

[0084] The linear driver is a pneumatic cylinder, the cylinder body of the pneumatic cylinder is fixedly connected with the mounting seat 3, and the piston rod of the pneumatic cylinder is connected with the driving rod 5.

[0085] Further, as shown in Figure 7 、 Figure 8 The structure of the limiting seat 4 comprises four limiting plates 41, the upper surface of the limiting plate 41 is provided with a boss 42, the four limiting plates 41 are sequentially connected to form an annular structure, and the upper surfaces of the four bosses 42 are sequentially connected to form a through hole 40.

[0086] The limiting plate 41 provided with the boss 42 is in a convex shape in cross section, the limiting of the assembly of the limiting plate 41 is facilitated, the limiting seat 4 is designed in a split mode, the limiting seat 4 is convenient to process, can be mounted on the mounting seat 3 through a fastener, the local heat treatment of the limiting seat 4 is facilitated, and the manufacturing cost is reduced.

[0087] Further, the measuring rod floating structure further comprises an adapter 2, the adapter 2 comprises an extension pipe 22, one end of the extension pipe 22 is provided with a first connecting flange 21, the first connecting flange 21 is used for fixedly mounting the measuring rod 1, the other end of the extension pipe 22 is provided with a second connecting flange 24, and the second connecting flange 24 is fixedly connected with the movable block 6.

[0088] The first connecting flange 21 is in an annular structure, the extension pipe 22 is provided with a through hole 23, the wiring end of the measuring rod 1 corresponds to the center hole of the first connecting flange 21, the center hole is communicated with the inner cavity of the extension pipe 22, and the connecting wire of the measuring rod 1 is led out from the through hole 23.

[0089] The working principle of the measuring rod floating structure of the embodiment is introduced taking the horizontal direction of the measuring hole as an example.

[0090] Step one, the workpiece to be measured moves to the measuring station, the measuring hole on the workpiece to be measured is in horizontal direction, the measuring hole is a horizontal long hole, the length of the measuring rod 1 and the measuring hole is matched, the length is 500mm-1000mm, at this time, the movable block 6 is floatingly connected with the through hole 40 on the moving end of the moving mechanism;

[0091] Step two, the driving rod 5 drives the movable block 6 to move in the through hole 40, so that the movable block 6 is fixedly connected with the inner wall of the through hole 40 after the movable block 6 is in contact with the inner wall of the through hole 40, so that the end of the measuring rod 1 points to the hole of the measuring hole, at this time, the end of the measuring rod 1 can realize accurate positioning with the hole of the measuring hole;

[0092] Step three, after the movable block 6 is fixedly connected with the through hole 40, the moving mechanism drives the measuring rod 1 to move towards the hole of the measuring hole, when the end of the measuring rod 1 enters the hole, the driving rod 5 drives the movable block 6 to move reversely in the through hole 40, so that the movable block 6 and the through hole 40 restore to the floating connection state; under the accurate positioning in step two, the end of the measuring rod 1 enters the hole, so that the movable block 6 and the through hole 40 restore to the floating connection state, and the measuring rod 1 can be lapped on the hole wall of the measuring hole, so as to guide the position of the measuring rod 1 to change with the measuring hole, avoid the end of the measuring rod 1 from knocking and bumping the part due to inaccurate positioning, and also reduce the friction between the measuring rod 1 and the measuring hole.

[0093] Step four, after step three is completed, that is, in the case that the movable block 6 and the through hole 40 are in the floating connection state, the moving mechanism drives the measuring rod 1 to move, the end of the measuring rod 1 continues to extend into the measuring hole, and the radial position of the measuring rod 1 changes according to the position change of the measuring hole.

[0094] Step five, after the measurement is completed, the moving mechanism drives the measuring rod 1 to move out of the measuring hole.

[0095] The measuring rod 1 in the fixed state and the accurate positioning mode enter the hole of the measuring hole, and then the measuring rod 1 is in the floating state, so that the radial position of the measuring rod 1 changes according to the position of the measuring hole, the directivity of the measuring rod 1 before entering the measured hole is improved, the positioning accuracy of the measuring rod is controlled, and bumping and scratching in the measurement process are avoided.

[0096] The above description is an explanation of the utility model, not a limitation of the utility model, the scope defined by the utility model is referred to the claims, and any form of modification can be made within the protection scope of the utility model.

Claims

1. A boom floating structure, characterized by: Comprising a movable block (6), an outer circumferential surface of the movable block (6) is a conical surface, one end of the movable block (6) is used for fixedly mounting the measuring rod (1); a limiting seat (4) is fixedly mounted on a moving end of a measuring equipment moving mechanism, a conical through hole (40) is arranged on the limiting seat (4), and the through hole (40) is matched with the outer circumferential surface of the movable block (6); a driving rod (5) is in transmission connection with the other end of the movable block (6), the driving rod (5) is used for driving the movable block (6) to move in the through hole (40), and then the interval between the outer circumferential surface of the movable block (6) and the inner wall surface of the through hole (40) is changed; when the interval is greater than zero, the movable block (6) can swing in the through hole (40) under the action of an external force, and the movable block (6) is fixedly connected with the through hole (40) when the outer circumferential surface of the movable block (6) is in contact with the inner wall surface of the through hole (40).

2. The boom floating structure according to claim 1, characterized by: The conical surface is a circular conical surface, the through hole (40) is a circular conical hole, the movable block (6) is at least two pieces and is arranged side by side, one end of all the movable blocks (6) is fixedly connected with the measuring rod (1), and the other end of all the movable blocks (6) is in transmission connection with the driving rod (5).

3. The gauge rod float structure of claim 1, wherein: The outer circumferential surface of the movable block (6) is in a quadrangular pyramid shape, at least two adjacent planes in the outer circumferential surface of the movable block (6) intersect with the axis of the through hole (40), the through hole (40) is in a quadrangular pyramid shape, and the number of the movable block (6) and the limiting seat (4) is one piece.

4. The boom floating structure according to claim 3, wherein: The quadrangular pyramid is a regular quadrangular pyramid, the included angle (θ) between the inclined surface of the quadrangular pyramid and the axis of the through hole (40) is 2°-5°, and the maximum average gap (D) between the through hole (40) and the movable block (6) is 0.4mm-0.8mm.

5. The gauge rod float structure of claim 1, wherein: The axis of the driving rod (5) is arranged at an included angle with the axis of the through hole (40), a pair of parallel guide inclined surfaces (51) are arranged on the driving rod (5), a pair of guide rods (61) are arranged on the movable block (6), the driving rod (5) is located between the two guide rods (61), each guide rod (61) is in sliding fit with a guide inclined surface (51), when the driving rod (5) moves, the guide rod (61) slides on the guide inclined surface (51), and the movable block (6) is driven to move in the through hole (40).

6. The gauge rod float structure of claim 5, wherein: Further comprising a mounting seat (3), the limiting seat (4) is fixedly mounted on the mounting seat (3), a guide hole (31) is arranged on the mounting seat (3), and the driving rod (5) is in sliding connection with the guide hole (31).

7. The gauge rod float structure of claim 5, wherein: The guide rod (61) is in a cylindrical structure.

8. The gauge rod float structure of claim 5, wherein: The axis of the driving rod (5) is perpendicular to the axis of the through hole (40).

9. The gauge rod float structure of claim 5, wherein: Further comprising a linear driver, a moving end of the linear driver is connected with the driving rod (5), and the linear driver is used for driving the driving rod (5) to move along the axis direction of the driving rod (5).

10. The rod float structure of claim 3, wherein: The structure of the limiting seat (4) comprises four limiting plates (41), the upper surface of the limiting plate (41) is provided with a boss (42), the four limiting plates (41) are sequentially connected to form an annular structure, and the upper surfaces of the four bosses (42) are sequentially connected to form the through hole (40).

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