Self-centering mechanism for a sensor

Abstract

The application discloses an automatic centering mechanism of a sensor, which comprises a supporting mechanism, a supporting ring located at the outer ring of a tray, an angle code fixed on the edge of the tray and located above the supporting ring, the vertical projection of the angle code intersecting with the supporting ring, and the upper surface of the tray always contacting the sensor; the tray is provided below with a lower pressing plate with a fixed spatial position; a lifting mechanism, a plurality of threaded studs vertically penetrating through the supporting ring, the threaded studs being symmetrically arranged along the mirror surface, one horizontal longitudinal transmission rod being connected below the threaded studs on each side, one transverse transmission rod being connected at one end of the two longitudinal transmission rods, and the transverse transmission rod being driven by a first rotary motor; a translation mechanism, the supporting mechanism and the lifting mechanism being driven to horizontally translate; the center lines of the transverse transmission rod and the longitudinal transmission rod forming a H-shaped form, the opening direction of the H-shaped form being directed to the lower pressing plate and being parallel to the translation direction of the translation mechanism. The application is convenient for the translation of a large mass sensor and guarantees the accuracy of the test.

Description

Technical Field

[0001] This invention relates to the field of handling equipment, and more specifically to an automatic centering mechanism for a sensor. Background Technology

[0002] Standard force measuring machines are mainly classified into lever machines, static weight machines, and superimposed force standard machines based on their basic principles. Since lever machines and static weight machines use weights as the force source, for ultra-large force measuring machines weighing thousands or even tens of thousands of tons, using the weight as the standard load would result in enormous weights, making loading extremely difficult. Therefore, only superimposed force standard machines can be used for ultra-large force measuring machines. Superimposed force standard machines use hydraulic or mechanical force generators as the force source, and the force value is measured by a standard sensor. A 10,000-ton sensor is used on 10,000-ton force measuring machines or bridges to detect tensile force. This type of sensor itself is very heavy, making movement difficult. Furthermore, because there is existing equipment above the sensor when it is in its working position, it is inconvenient to move it using an overhead crane. Therefore, specialized equipment needs to be designed to achieve automatic handling and automatic centering to facilitate subsequent testing. Summary of the Invention

[0003] The problem to be solved by the present invention is to provide an automatic centering mechanism for sensors, which facilitates the translation of large-mass sensors and ensures the accuracy of the test.

[0004] To solve the above problems, the present invention provides an automatic centering mechanism for a sensor. The technical solution adopted by the present invention to solve its technical problems to achieve the above objectives is as follows: An automatic centering mechanism for a sensor, comprising: a supporting mechanism, including a tray and a support ring located on the outer ring of the tray; a corner bracket fixed above the support ring on the edge of the tray; the vertical projection of the corner bracket intersects with the support ring; the upper surface of the tray is always in contact with the sensor; a pressure plate with a fixed spatial position is provided below the tray; a lifting mechanism, wherein several studs are vertically threaded through the support ring, the studs are arranged symmetrically along a mirror plane, and a horizontal longitudinal transmission rod is connected to the bottom of each stud on each side; one end of two longitudinal transmission rods is connected to a transverse transmission rod, the transverse transmission rod being driven by a first rotary motor; and a translation mechanism, driving the supporting mechanism and the lifting mechanism to reciprocate horizontally; the center lines of the transverse and longitudinal transmission rods form a U-shape, the opening of the U-shape pointing towards the pressure plate and parallel to the translation direction of the translation mechanism.

[0005] The beneficial effects of adopting the above technical solution are: this handling equipment can realize the horizontal turnover of the sensor without affecting the force test of the sensor. The tray and the ring move synchronously with the translation mechanism in the horizontal direction. However, due to the presence of the corner bracket, the vertical unidirectional degree of freedom of both is restricted. Since the sensor itself is also heavy, it is inconvenient to move it directly. Therefore, the tray is used to continuously support the sensor, which facilitates the translation of the sensor and prevents the sensor from being damaged by direct contact. When it is necessary to move the sensor, the ring rises until it contacts the corner bracket. At this time, the tray does not contact the pressure plate, and the tray moves synchronously with the ring. When testing, the ring descends, allowing the corner bracket to separate from the ring. Throughout the entire test, regardless of whether the tray is moderately displaced or deformed due to force, it will not contact the ring, so the ring will not interfere with the accuracy of force transmission. The pressure plate with a fixed spatial position is part of the test equipment. When the tray and the pressure plate are coaxially connected, it is the test condition, which is convenient for transmitting vertical pressure.

[0006] The lifting and lowering of the support ring is achieved by the rotation of the studs, giving the pallet sufficient lifting force. Symmetrically arranged screws ensure even force distribution and prevent skewing. Simultaneously, a primary rotary motor acts as the driving force, guaranteeing synchronous movement of all screws. Longitudinal and transverse drive rods transmit rotational force.

[0007] The semi-enclosed structure, consisting of two longitudinal drive rods and one transverse drive rod, has an opening that facilitates the overall entry and exit; otherwise, the fully enclosed frame structure might interfere with the lower pressure plate during translation.

[0008] As a further improvement of the present invention, there is a gap between the tray and the support ring, and the corner brackets are arranged in a circular array along the tray, with the number of corner brackets being an even number of not less than four.

[0009] The beneficial effects of adopting the above technical solution are: when the corner brackets contact the support ring, the force on each corner bracket is basically the same. Even-numbered corner brackets can also achieve a mirror-symmetrical arrangement.

[0010] As a further improvement of the present invention, there are no fewer than three studs on the same side, and the studs on the same side are arranged at equal intervals. The distance between the first rotary motor and the two ends of the transverse transmission rod is equal. The transverse transmission rod and the longitudinal transmission rod are connected by bevel gears, and the longitudinal transmission rod between two adjacent studs on the same side is equipped with a coupling.

[0011] The beneficial effects of adopting the above technical solution are: the number of studs is sufficient, so that each stud is not subjected to excessive force. The first rotary motor is also located at the midpoint of the transverse transmission rod, so that the structural strength of the two ends of the first rotary motor is similar when outputting rotational force.

[0012] As a further improvement of the present invention, when the support ring moves with the stud to the lowest limit position, the corner bracket separates from the support ring, and the tray contacts the lower pressure plate; when the support ring moves with the stud to the highest limit position, the corner bracket contacts the support ring, and the tray separates from the lower pressure plate.

[0013] The beneficial effects of adopting the above technical solution are: ensuring that the vertical lifting distance of the support ring is sufficient, and that different states can be achieved at the two extreme positions.

[0014] As a further improvement of the present invention, a sliding plate is provided below the support ring, and a guide post that penetrates the support ring is fixed on the sliding plate.

[0015] The beneficial effects of adopting the above technical solution are: the sliding plate provides a fixed position for the stud, the first rotary motor, etc.; the guide post plays a limiting and guiding role, further ensuring that the support ring has only the vertical lifting freedom.

[0016] As a further improvement of the present invention, the translation mechanism includes two parallel horizontal slide rails located below the sliding plate, and the horizontal slide rails are assembled with the lower surface of the sliding plate via a slider.

[0017] The beneficial effects of adopting the above technical solution are: the horizontal slide rail makes the frictional resistance during horizontal movement very small, and at the same time ensures that it will only reciprocate along a fixed straight line.

[0018] As a further improvement of the present invention, a housing is provided between the two horizontal slide rails, and a spatial cross-section divides each horizontal slide rail into two equal parts. The housing and the pressure plate are located on both sides of the spatial cross-section.

[0019] The advantages of adopting the above technical solution are: the box body is connected and fixed by two horizontal slide rails, and the top of the box body also provides a temporary placement position for the pallet. The distance between the box body and the lower pressure plate is relatively large, ensuring that the pallet has sufficient travel to achieve horizontal entry and exit.

[0020] As a further improvement of the present invention, a second rotary motor is fixed on the housing, the second rotary motor drives a lead screw parallel to the horizontal slide rail, and a lead screw nut assembled with the lead screw is fixed on the sliding plate.

[0021] The beneficial effect of adopting the above technical solution is that the second rotary motor drives the lead screw and nut mechanism to realize the active movement of the sliding plate.

[0022] As a further improvement of the present invention, when the sliding plate moves to the limit position away from the box body, the tray and the lower pressure plate are arranged coaxially.

[0023] The beneficial effect of adopting the above technical solution is that when the movement reaches the extreme position on one side, the pallet and the pressure plate are arranged coaxially, eliminating the need for size alignment.

[0024] As a further improvement of the present invention, a limiting block is provided at one end of the horizontal slide rail. When the sliding plate moves to the extreme position away from the box, the sliding plate contacts the limiting block. The limiting block and the horizontal slide rail are assembled by a horizontal threaded rod.

[0025] The beneficial effects of adopting the above technical solution are: the limiting block serves to limit the extreme position. The position of the limiting block can be finely adjusted by moderately rotating the threaded knob, thereby ensuring that the extreme position of the sliding plate is the required position. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is an application diagram of one embodiment of the present invention;

[0028] Figure 2 This is a partial enlarged view of point A in one embodiment of the present invention;

[0029] Figure 3 This is a perspective view of one embodiment of the present invention;

[0030] Figure 4 This is a partial enlarged view of section B in one embodiment of the present invention;

[0031] Figure 5 This is a perspective view of one embodiment of the present invention;

[0032] Figure 6 This is a partial enlarged view of point C in one embodiment of the present invention;

[0033] Figure 7 This is a perspective view of one embodiment of the present invention;

[0034] Figure 8 This is a partial enlarged view of point D in one embodiment of the present invention.

[0035] 1-Pallet; 2-Support ring; 3-Angle bracket; 4-First rotary motor; 5-Horizontal transmission rod; 6-Longitudinal transmission rod; 7-Bevel gear; 8-Stud; 9-Coupling; 10-Guide post; 11-Limit block; 12-Threaded rod; 13-Sliding plate; 14-Horizontal slide rail; 15-Second rotary motor; 16-Lead screw; 17-Box; 18-Lower pressure plate. Detailed Implementation

[0036] The following further elaborates on the content of the present invention in conjunction with specific embodiments:

[0037] To achieve the object of the present invention, an automatic centering mechanism for a sensor includes: a supporting mechanism, including a tray 1 and a retaining ring 2 located on the outer circle of the tray 1. Angle brackets 3 are fixed on the edge of the tray 1 above the retaining ring 2. The vertical projection of the angle brackets 3 intersects with the retaining ring 2. The upper surface of the tray 1 is always in contact with the sensor; there is a lower pressing plate 18 with a fixed spatial position below the tray 1; a lifting mechanism, several stud bolts 8 penetrate vertically through the retaining ring 2, and the several stud bolts 8 are arranged symmetrically along the mirror plane. A horizontal longitudinal transmission rod 6 is commonly connected below each side of the stud bolts 8. One end of the two longitudinal transmission rods 6 is commonly connected to a transverse transmission rod 5, and the transverse transmission rod 5 is driven by a first rotating motor 4; a translation mechanism, which drives the supporting mechanism and the lifting mechanism to reciprocate horizontally; the center lines of the transverse transmission rod 5 and the longitudinal transmission rods 6 form a C-shaped structure, and the opening direction of the C-shaped structure points to the lower pressing plate 18 and is parallel to the translation direction of the translation mechanism.

[0038] Among them, the character "C" is a Chinese character, not a character. It refers to a square utensil for holding things in ancient times. Here, the C-shaped structure is used to represent the state where a transverse transmission rod 5 and two longitudinal transmission rods 6 are vertically connected in sequence.

[0039] The beneficial effects of adopting the above technical solutions are as follows: This handling equipment can achieve the horizontal turnover of the sensor without affecting the force test of the sensor. The tray and the retaining ring are synchronously translated horizontally with the translation mechanism. However, due to the existence of the angle brackets, it is equivalent to restricting the single-direction freedom in the vertical direction of the two. Since the sensor itself has a large mass and is not convenient to be directly translated, the tray is used to continuously support the sensor, which is convenient for the translation of the sensor, and the sensor is not easily damaged by direct contact. When the sensor needs to be translated, the retaining ring rises until it contacts the angle bracket. At this time, the tray does not contact the lower pressing plate, and the tray moves synchronously with the retaining ring; when testing, the retaining ring descends to separate the angle bracket from the retaining ring. During the entire test process, no matter whether the tray is moderately displaced or deformed due to force, it will not contact the retaining ring. Therefore, naturally, the retaining ring will not interfere with the accuracy of force transmission. The lower pressing plate with a fixed spatial position is a part of the test equipment. When the tray is coaxially docked with the lower pressing plate, it is the test condition, and at this time, it is convenient to transmit the vertical pressure.

[0040] The lifting of the retaining ring is achieved by the self-rotation of the stud bolts, so that the tray has sufficient lifting force. The symmetrically arranged screw rods ensure uniform force and prevent skew. At the same time, a first rotating motor is used as the driving force to ensure the synchronous movement of all screw rods. The longitudinal transmission rod and the transverse transmission rod are used to achieve the transmission of the rotational force.

[0041] The semi-enclosed structure, consisting of two longitudinal drive rods and one transverse drive rod, has an opening that facilitates the overall entry and exit; otherwise, the fully enclosed frame structure might interfere with the lower pressure plate during translation.

[0042] In some other embodiments of the present invention, there is a gap between the tray 1 and the support ring 2, and the corner brackets 3 are arranged in a circular array along the tray 1, and the number of corner brackets 3 is an even number of not less than four.

[0043] The beneficial effects of adopting the above technical solution are: when the corner brackets contact the support ring, the force on each corner bracket is basically the same. Even-numbered corner brackets can also achieve a mirror-symmetrical arrangement.

[0044] In other embodiments of the present invention, there are no fewer than three studs 8 on the same side, and the studs 8 on the same side are arranged at equal intervals. The distance between the first rotary motor 4 and the two ends of the transverse transmission rod 5 is equal. The transverse transmission rod 5 and the longitudinal transmission rod 6 are connected by bevel gears. The longitudinal transmission rod 6 between two adjacent studs 8 on the same side is equipped with a coupling 9.

[0045] The beneficial effects of adopting the above technical solution are: the number of studs is sufficient, so that each stud is not subjected to excessive force. The first rotary motor is also located at the midpoint of the transverse transmission rod, so that the structural strength of the two ends of the first rotary motor is similar when outputting rotational force.

[0046] In some other embodiments of the present invention, when the support ring 2 moves with the stud 8 to the lowest limit position, the corner bracket 3 separates from the support ring 2, and the tray 1 contacts the lower pressure plate 18; when the support ring 2 moves with the stud 8 to the highest limit position, the corner bracket 3 contacts the support ring 2, and the tray 1 separates from the lower pressure plate 18.

[0047] The beneficial effects of adopting the above technical solution are: ensuring that the vertical lifting distance of the support ring is sufficient, and that different states can be achieved at the two extreme positions.

[0048] In some other embodiments of the present invention, a sliding plate 13 is provided below the support ring 2, and a guide post 10 that penetrates vertically through the support ring 2 is fixed on the sliding plate 13.

[0049] The beneficial effects of adopting the above technical solution are: the sliding plate provides a fixed position for the stud, the first rotary motor, etc.; the guide post plays a limiting and guiding role, further ensuring that the support ring has only the vertical lifting freedom.

[0050] In other embodiments of the present invention, the translation mechanism includes two parallel horizontal slide rails 14 located below the slide plate 13, the horizontal slide rails 14 being assembled to the lower surface of the slide plate 13 via sliders.

[0051] The beneficial effects of adopting the above technical solution are: the horizontal slide rail makes the frictional resistance during horizontal movement very small, and at the same time ensures that it will only reciprocate along a fixed straight line.

[0052] In some other embodiments of the present invention, a housing 17 is provided between the two horizontal slide rails 14, and a spatial cross-section divides each horizontal slide rail 14 into two equal parts, with the housing 17 and the pressure plate 18 located on both sides of the spatial cross-section.

[0053] The advantages of adopting the above technical solution are: the box body is connected and fixed by two horizontal slide rails, and the top of the box body also provides a temporary placement position for the pallet. The distance between the box body and the lower pressure plate is relatively large, ensuring that the pallet has sufficient travel to achieve horizontal entry and exit.

[0054] In some other embodiments of the present invention, a second rotary motor 15 is fixed on the housing 17, the second rotary motor 15 drives a lead screw 16 parallel to the horizontal slide rail 14, and a lead screw nut assembled with the lead screw 16 is fixed on the sliding plate 13.

[0055] The beneficial effect of adopting the above technical solution is that the second rotary motor drives the lead screw and nut mechanism to realize the active movement of the sliding plate.

[0056] In other embodiments of the present invention, when the sliding plate 13 moves to the extreme position away from the box body, the tray and the pressure plate are arranged coaxially.

[0057] The beneficial effect of adopting the above technical solution is that when the movement reaches the extreme position on one side, the pallet and the pressure plate are arranged coaxially, eliminating the need for size alignment.

[0058] In some other embodiments of the present invention, a limiting block 11 is provided at one end of the horizontal slide rail 14. When the sliding plate 13 moves to the extreme position away from the box body 17, the sliding plate 13 contacts the limiting block 11. The limiting block 11 and the horizontal slide rail 14 are assembled by a horizontal threaded rod 12.

[0059] The beneficial effects of adopting the above technical solution are: the limiting block serves to limit the extreme position. The position of the limiting block can be finely adjusted by moderately rotating the threaded knob, thereby ensuring that the extreme position of the sliding plate is the required position.

[0060] like Figures 1 to 5 Both are in the state where the pressure plate 18 is connected to the tray 1. The tray 1 is cylindrical, and the bottom of the corner bracket 3 is flush with the bottom of the tray 1.

[0061] The outer contour of the top view of the ring 2 is octagonal.

[0062] The above embodiments are only for illustrating the technical concept and features of the present invention. Their purpose is to enable those skilled in the art to understand the content of the present invention and implement it. They should not be used to limit the scope of protection of the present invention. All equivalent changes or modifications made in accordance with the spirit and essence of the present invention should be covered within the scope of protection of the present invention.

Claims

1. An automatic centering mechanism for a sensor, characterized by The utility model relates to a kind of sensor test equipment, including: Support mechanism, including tray and the support ring located at the outer circle of tray, the edge of the tray is fixed with the corner code located above support ring, the vertical projection of the corner code intersects with support ring, the upper surface of the tray is always contacted with sensor;The lower side of the tray is provided with the lower pressing plate with fixed spatial position; Lifting mechanism, the support ring is vertically penetrated by several studs, several studs are arranged along mirror symmetry, the stud below each side is commonly connected with a horizontal longitudinal transmission rod, the end of two longitudinal transmission rods is commonly connected with a transverse transmission rod, the transverse transmission rod is driven by first rotary motor; Translation mechanism, drive support mechanism, lifting mechanism along horizontal reciprocating translation; The center line of the transverse transmission rod and longitudinal transmission rod constitutes a character, the opening direction of the character points to lower pressing plate and is parallel with the translation direction of translation mechanism; There is gap between the tray and support ring, the corner code is arranged along tray annular array, the number of the corner code is not less than four even number; The same side stud is not less than three, the same side stud is arranged at equal interval between each other, the distance of the first rotary motor from the two ends of transverse transmission rod is equal;The transverse transmission rod and longitudinal transmission rod are connected by bevel gear between them, and there is shaft coupling on the longitudinal transmission rod between the two adjacent studs on the same side; When the support ring moves to the lowest limit position with stud, the corner code is separated from support ring, and the tray is contacted with lower pressing plate;When the support ring moves to the highest limit position with stud, the corner code is contacted with support ring, and the tray is separated from lower pressing plate; The outer contour of the support ring in plan view is octagonal; The lower side of the support ring is provided with sliding plate, and the guide column vertically penetrating the support ring is fixed on the sliding plate; The translation mechanism includes two parallel horizontal sliding rails below the sliding plate, and the horizontal sliding rails are assembled with the lower surface of the sliding plate through sliding blocks; There is a box between the two horizontal sliding rails, which equally divides each horizontal sliding rail in space cross section, and the box and the lower pressing plate are located on the two sides of the space cross section respectively; The second rotary motor is fixed on the box, and the second rotary motor drives a lead screw parallel to the horizontal sliding rail, and the nut is fixed on the sliding plate and assembled with the lead screw;The second rotary motor drives the lead screw nut mechanism to realize the active movement of the sliding plate; When the sliding plate moves to the limit position away from the box, the tray and the lower pressing plate are coaxially arranged.

2. An automatic centering mechanism for a sensor according to claim 1, characterized in that: One end of the horizontal sliding rail is provided with a limit block, when the sliding plate moves to the limit position away from the box, the sliding plate is contacted with the limit block, and the limit block and the horizontal sliding rail are assembled through horizontal threaded rod.

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