Auxiliary calibration device for liquid level meter

Abstract

The utility model discloses an auxiliary calibration device for a liquid level meter. The auxiliary calibration device comprises a seat body; the first supporting piece is connected to the seat body in the first direction and comprises a lower supporting part and an upper supporting part movably connected with the lower supporting part through a folding hinge, and the upper supporting part can be in an unfolded state or a folded state; the first movable piece is movably connected to the first supporting piece, and the first movable piece can move in a reciprocating mode in the first direction; the second supporting piece is connected to the first movable piece in the second direction, and the second direction is perpendicular to the first direction; the second movable piece is movably connected to the second supporting piece, and the second movable piece can move in a reciprocating mode in the second direction; the clamping assembly is connected to the second movable part and used for clamping the liquid level meter. According to the device, the liquid level meter can be rapidly, accurately and stably calibrated to the target height, the operation and maintenance time is shortened, the operation and maintenance quality is improved, and the portability and operation convenience of the device are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of multidirectional adjusting clamp especially relates to a liquid level meter auxiliary calibration device. BACKGROUND

[0002] Cable type liquid level meter is widely used in various fields of industrial production and life, and is used for measuring the liquid level height in a container, especially in nuclear power plant cold source equipment, so that the effectiveness, efficiency and accuracy of cable type liquid level meter operation and maintenance play a key role in the smooth operation of nuclear power unit. For the operation and maintenance of cable type liquid level meter, including maintenance, test and other work, the usual way is to manually operate the cable type liquid level meter to calibrate to the target height, but there are human operation error, line of sight error, precision error and other adverse effects in the manual operation process, resulting in poor accuracy of liquid level detection result. Usually, due to human operation error, repeated attempts are needed for one time operation and maintenance, which is relatively large in workload, seriously affects the available time of liquid level meter normal work, and affects the reliability of cold source equipment operation. SUMMARY

[0003] In order to solve the above technical problems, the application provides a liquid level meter auxiliary calibration device, which solves the technical problems of poor accuracy of liquid level detection result, inconvenient operation and influence on the reliability of cold source equipment operation caused by the lack of special auxiliary calibration device in the maintenance, test and other work of cable type liquid level meter. The liquid level meter auxiliary calibration device provided by the application can quickly, accurately and stably calibrate the liquid level meter to the target height, reduce the operation and maintenance time, improve the operation and maintenance quality, and improve the portability and operation convenience of the device.

[0004] The application provides a liquid level meter auxiliary calibration device for calibrating a liquid level meter to a target height, the device comprising: a seat body; a first support connected to the seat body in a first direction, comprising a lower support part fixedly connected with the seat body and an upper support part movably connected with the lower support part through a folding hinge, the upper support part being configured to be in an unfolded state or a folded state compared with the lower support part; a first movable part movably connected with the first support, the first movable part being configured to reciprocally move along the first direction compared with the first support; a second support connected to the first movable part in a second direction, the second direction being perpendicular to the first direction; a second movable part movably connected with the second support, the second movable part being configured to reciprocally move along the second direction compared with the second support; and a clamping assembly connected with the second movable part for clamping the liquid level meter.

[0005] In some embodiments, the device further comprises a first limiting structure disposed between the upper support portion and the lower support portion, the first limiting structure being configured to limit the upper support portion to an unfolded state relative to the lower support portion, so that the first support member has a maximum length in the first direction.

[0006] In some embodiments, the first limiting structure comprises a locking member having first and second slots respectively disposed at two ends thereof and extending in the first direction; a first fastener A threadedly connected to the upper support portion and at least partially disposed in the first slot and abutting against the locking member; and a first fastener B threadedly connected to the lower support portion and at least partially disposed in the second slot and abutting against the locking member.

[0007] In some embodiments, the device further comprises a first driving mechanism connected between the first movable member and the first support member for driving the first movable member to move.

[0008] In some embodiments, the first driving mechanism comprises a driving rack extending in the first direction and comprising an upper rack portion disposed on the upper support portion and a lower rack portion disposed on the lower support portion, the driving rack being a helical rack; and a rotating member rotatably connected to the first movable member via a driving shaft extending in a third direction, the driving shaft having a driving gear coaxially connected thereto and engaged with the driving rack, the driving gear being a helical gear, the third direction being perpendicular to the first direction and the second direction.

[0009] In some embodiments, when the upper support portion is in a folded state relative to the lower support portion, the upper rack portion faces away from the lower rack portion.

[0010] In some embodiments, the first driving mechanism further comprises a first driving member disposed on an outer end surface of the rotating member facing away from the driving shaft in the third direction, the first driving member being axially misaligned with the driving shaft, the first driving member being configured to be held by a hand.

[0011] In some embodiments, the device further comprises a second limiting structure disposed between the first movable member and the first support member, the second limiting structure being configured to limit the position of the first movable member on the first support member so that the clamping assembly is in a limited position in the first direction; and a third limiting structure disposed between the second movable member and the second support member, the third limiting structure being configured to limit the position of the second movable member on the second support member so that the clamping assembly is in a limited position in the second direction.

[0012] In some embodiments, the device further comprises a second driving member disposed on the second movable member, the second driving member being configured to be held by a hand.

[0013] In some embodiments, the clamping assembly comprises a first clamping arm fixedly connected to the second movable member, the first clamping arm being concave on a first surface thereof facing away from the second movable member and forming at least one first wire slot extending in the first direction; a second clamping arm movably connected to the first clamping arm, the second clamping arm being configured to be opened and closed relative to the first clamping arm; the second clamping arm being concave on a second surface thereof facing the first surface and forming at least one second wire slot extending in the first direction; and a fourth fastener movably connected between the first clamping arm and the second clamping arm, the fourth fastener being configured to lock and fix the first clamping arm and the second clamping arm in a closed state, and to fold the first wire slot and the corresponding second wire slot to clamp the level gauge.

[0014] The auxiliary calibration device for the level gauge provided in the present application comprises a first support member connected to the seat body, a first movable member movably connected to the first support member and reciprocally moving in a first direction relative to the first support member, a second support member connected to the first movable member, a second movable member movably connected to the second support member and reciprocally moving in a second direction relative to the second support member, and a clamping assembly connected to the second movable member, the first direction being perpendicular to the second direction.

[0015] In actual use, the cable type level gauge is fixed by the clamping assembly, and then the coordinate point of the level gauge in the first direction is adjusted by adjusting the moving distance of the first movable member relative to the first support member, and the coordinate point of the level gauge in the second direction is adjusted by adjusting the moving distance of the second movable member relative to the second support member, so as to realize the accurate position adjustment of the level gauge in the plane of the first direction and the second direction. The auxiliary support and fixation of the level gauge can be realized in the operation and maintenance, test and other work of the cable type level gauge of the nuclear power plant cold source equipment, so as to quickly, accurately and stably calibrate the level gauge to the target height, avoid the error caused by human factors in manual operation, significantly reduce the operation and maintenance time, improve the operation and maintenance quality, and effectively improve the operation safety of the nuclear power plant cold source equipment.

[0016] In addition, the liquid level gauge auxiliary calibration device provided by the application, the first support member includes a lower support part and an upper support part movably connected with the lower support part through a folding hinge, the first direction can be set to be consistent with the direction of gravity, and in actual use, the upper support part can be in an unfolded state compared with the lower support part, the length of the first support member in the first direction is maximum in this state, the liquid level gauge can be calibrated to a higher target height, and the applicability is higher; in a non-use state, the upper support part can be in a folded state compared with the lower support part, the overall height of the first support member in the first direction is minimum in this state, the folding storage of the whole device is realized, the volume of the whole device is reduced, and the portability and operation convenience of the device are significantly improved. BRIEF DESCRIPTION OF DRAWINGS

[0017] The technical scheme of the application will be further described below with reference to the drawings and examples, and the drawings are as follows:

[0018] Figure 1 is a schematic diagram of a three-dimensional structure of the upper support part of one embodiment of the device in a folded state;

[0019] Figure 2 is a schematic diagram of a three-dimensional structure of the upper support part of one embodiment of the device in a folded state; Figure 1 is an enlarged schematic diagram of a local structure at S1 in the device;

[0020] Figure 3 is a schematic diagram of a front view structure of the upper support part of one embodiment of the device in an unfolded state;

[0021] Figure 4 is a schematic diagram of a front view structure of the upper support part of one embodiment of the device in an unfolded state; Figure 3 is an enlarged schematic diagram of a local structure at S2 in the device;

[0022] Figure 5 is a schematic diagram of a side view structure of the first limiting structure connection of one embodiment of the device;

[0023] Figure 6 is an enlarged schematic diagram of a local structure at S3 in the device. Figure 3

[0024] The reference signs are as follows:

[0025] ​1 - base body; 2 - first support, 21 - lower support part, 22 - upper support part, 23 - first sliding rail, 24 - driving rack, 241 - upper rack part, 242 - lower rack part; 3 - first movable part, 31 - first sliding groove; 4 - second support, 41 - second sliding rail; 5 - second movable part, 51 - second sliding groove; 6 - clamping assembly, 61 - first clamping arm, 611 - first surface, 612 - first wire slot, 62 - second clamping arm, 621 - second surface, 622 - second wire slot, 623 - groove, 63 - fourth fastener, 631 - fish eye bolt, 632 - hand nut, 64 - first pin shaft, 65 - second pin shaft; 7 - folding hinge; 8 - reinforcing part; 9 - first limiting structure, 91 - locking part, 911 - first slot, 912 - second slot, 9121 - guide opening, 92 - first fastener A, 93 - first fastener B, 94 - compression spring, 95 - baffle; 10 - rotating part, 11 - driving shaft, 12 - driving gear, 13 - first driving part; 14 - second limiting structure, 141 - second fastener; 15 - third limiting structure, 151 - third fastener; 16 - second driving part. DETAILED DESCRIPTION

[0026] To make the purpose, technical scheme and effect of the utility model more clear and definite, the following will make further detailed description on the technical scheme of the utility model through specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and not used to limit the utility model.

[0027] Please refer to Figure 1 In some embodiments of the present application, a liquid level gauge auxiliary calibration device is provided for calibrating a liquid level gauge (not shown in the figure) to a target height. The device comprises a base body 1, a first support 2, a first movable part 3, a second support 4, a second movable part 5, and a clamping assembly 6. The base body 1 is a basic platform for supporting and fixing the remaining parts of the device. The reference surface of the base body 1 can be determined by a leveling structure (not shown in the figure).

[0028] The first support 2 is connected to the base body 1 in a first direction. The first support 2 comprises a lower support part 21 fixedly connected to the base body 1 and an upper support part 22 movably connected to the lower support part 21 by a folding hinge 7. The upper support part 22 is configured to assume an unfolded state (as shown in Figure 3 ) or a folded state (as shown in Figure 1 ). When the upper support part 22 assumes the unfolded state, the first support 2 has the maximum length in the first direction. When the upper support part 22 assumes the folded state, the first support 2 has the minimum length in the first direction.

[0029] The first movable part 3 is movably connected to the first supporting part 2, and is configured to reciprocate along the first direction relative to the first supporting part 2, so as to adjust the coordinate point of the first movable part 3 in the first direction.

[0030] The second supporting part 4 is movably connected to the first movable part 3 along a second direction, and the second direction is perpendicular to the first direction, so that the first direction and the second direction constitute two coordinate axes perpendicular to each other in a plane.

[0031] The second movable part 5 is movably connected to the second supporting part 4, and is configured to reciprocate along the second direction relative to the second supporting part 4, so as to adjust the coordinate point of the second movable part 5 in the second direction.

[0032] The clamping assembly 6 is connected to the second movable part 5 and is used for clamping the liquid level meter.

[0033] In order to facilitate understanding of the technical scheme of the present application, the first direction is set to be consistent with the direction of gravity and represented by a Z axis, and the second direction is represented by an X axis.

[0034] In actual use, the cable type liquid level meter is fixed by the clamping assembly 6, and then the coordinate point of the liquid level meter in the first direction, i.e., the Z axis direction, is adjusted by adjusting the movement distance of the first movable part 3 relative to the first supporting part 2, and the coordinate point of the liquid level meter in the second direction, i.e., the X axis direction, is adjusted by adjusting the movement distance of the second movable part 5 relative to the second supporting part 4, so as to realize accurate position adjustment of the liquid level meter in the plane of the Z axis direction and the X axis direction, and to assist in supporting and fixing the liquid level meter in the operation and maintenance, testing and other work of the cable type liquid level meter of the nuclear power plant cold source equipment, so as to quickly, accurately and stably calibrate the liquid level meter to the target height, avoid errors caused by human factors during manual operation, significantly reduce the operation and maintenance time, improve the operation and maintenance quality, and effectively improve the operation safety of the nuclear power plant cold source equipment.

[0035] In addition, the liquid level meter auxiliary calibration device provided by the present application, the first supporting part 2 includes a lower supporting part 21 and an upper supporting part 22 movably connected to the lower supporting part 21 through a folding hinge 7, in actual use, the upper supporting part 22 can be in an unfolded state relative to the lower supporting part 21, in this state, the length of the first supporting part 2 in the Z axis direction is the largest, which can calibrate the liquid level meter to a higher target height, and has higher applicability; in a non-use state, the upper supporting part 22 can be in a folded state relative to the lower supporting part 21, in this state, the overall height of the first supporting part 2 in the Z axis direction is the smallest, which realizes the folding and storage of the whole device, reduces the volume of the whole device, and significantly improves the portability and operation convenience of the device.

[0036] In some embodiments, the length ratio of the upper support part 22 to the lower support part 21 can be set as 1:1, 1:2, 2:3, 3:5, etc., which is not limited in the present application, and the upper support part 22 can be folded compared to the lower support part 21 to achieve the overall folding and storage of the device.

[0037] Please refer to Figure 1 In some embodiments, the first support 2 and the second support 4 can be provided as a long plate structure, the folding hinge 7 can be a two-fold hinge, and the length ratio of the upper support part 22 to the lower support part 21 can be set as 2:3 to achieve a 4 / 6 folding ratio of the first support 2 through the hinge.

[0038] The device of the present application can also include a reinforcing member 8, which can be provided as an angle code support structure to fixedly connect the seat body 1 and the lower support part 21, and play a structure reinforcing role to ensure the connection reliability between the seat body 1 and the first support 2.

[0039] The first support 2 is provided with a first sliding rail 23 extending along the Z-axis, and the first movable part 3 is provided with a first sliding groove 31 matched with the first sliding rail 23. The folding hinge 7 and the reinforcing member 8 are arranged on the side of the first support 2 away from the first sliding rail 23, so that when the upper support part 22 is unfolded compared to the lower support part 21, the first sliding rail 23 is continuous in the Z-axis direction and has the maximum length, ensuring that the first movable part 3 can reciprocate along the first sliding rail 23 between the lower support part 21 and the upper support part 22.

[0040] When the upper support part 22 is folded compared to the lower support part 21, the first sliding rail 23 has the minimum length in the Z-axis direction, and at this time the first movable part 3 can also reciprocate along the first sliding rail 23 on the lower support part 21, which can adapt to the environment with relatively low space height.

[0041] Please refer to Figure 2 In some embodiments, the second support 4 is provided with a second sliding rail 41 extending along the X-axis, and the second movable part 5 is provided with a second sliding groove 51 matched with the second sliding rail 41.

[0042] It can be understood that in other embodiments, a sliding groove extending in the first direction can also be arranged on the first support 2, a sliding rail matched with the sliding groove can be arranged on the first movable piece 3, a sliding groove extending in the second direction can be arranged on the second support 4, a sliding rail matched with the sliding groove can be arranged on the second movable piece 5, or other mutually matched sliding connection structures can also be adopted, and the present application does not make any limitation thereon, as long as the first movable piece 3 can be movably connected to the first support 2 and the second movable piece 5 can be movably connected to the second support 4 through the mutually matched sliding connection structures, and the first movable piece 3 can reciprocate relative to the first support 2 in the first direction and the second movable piece 5 can reciprocate relative to the second support 4 in the second direction.

[0043] Please refer to Figure 1 and Figure 3 In some embodiments, the device of the present application further comprises a first limiting structure 9 arranged between the upper support part 22 and the lower support part 21, and the first limiting structure 9 is configured to limit the upper support part 22 to be in an unfolded state relative to the lower support part 21, so that the first support 2 has a maximum length in the first direction.

[0044] The device of the present application ensures the stability of the unfolded state of the upper support part 22 relative to the lower support part 21 through the first limiting structure 9, prevents the upper support part 22 from being accidentally folded during use, and also avoids the relative displacement of the upper support part 22 relative to the lower support part 21 during use, thereby ensuring the accuracy of the height auxiliary calibration of the liquid level meter.

[0045] The design of the first limiting structure 9 needs to ensure that the upper support part 22 can be normally folded relative to the lower support part 21 according to the use needs.

[0046] The first limiting structure 9 can be a limiting structure combined in the folding hinge 7 or a limiting structure independent of the folding hinge 7, and the present application does not make any limitation thereon, as long as it can ensure that the upper support part 22 is in a stable unfolded state relative to the lower support part 21.

[0047] Please refer to Figure 4 and Figure 5 In some embodiments, the first limiting structure 9 comprises a locking piece 91, a first fastener A 92 and a first fastener B 93. The locking piece 91 can be arranged in the form of a strip plate, and the width of the locking piece 91 can be arranged to match the thickness of the first support 2 in the X-axis direction. The upper and lower ends of the locking piece 91 are respectively provided with a first slot 911 (as shown in Figure 5 ) and a second slot 912 (as shown in Figure 5 ) extending in the first direction, i.e., the Z-axis direction. The first slot 911 and the second slot 912 can be coaxially arranged or axially misaligned, and the present application does not make any limitation thereon.

[0048] The first fastener A92 is screwed on the upper support part 22, and at least part of the first fastener A92 is in the first slot 911 and at least partially stops at the locking piece 91, and the first fastener A92 is configured to enable the position adjustment of the locking piece 91 along the first slot 911 and to lock and fix the locking piece 91 with the upper support part 22.

[0049] The first fastener B93 is screwed on the lower support part 21, and when the upper support part 22 is unfolded compared with the lower support part 21, at least part of the first fastener B93 is in the second slot 912 and at least partially stops at the locking piece 91, so as to lock and fix the locking piece 91 with the lower support part 21.

[0050] The first fastener A92 and the first fastener B93 can be a fastening screw, and the upper support part 22 is provided with at least one upper threaded hole (not shown in the figure) near the lower end side wall of the folding hinge 7, which cooperates with the first fastener A92, and the lower support part 21 is provided with at least one lower threaded hole (not shown in the figure) near the upper end side wall of the folding hinge 7, which cooperates with the first fastener B93, and a plurality of upper threaded holes are arranged on the upper support part 22 along the first direction, and a plurality of lower threaded holes are arranged on the lower support part 21 along the first direction.

[0051] In use, the upper support part 22 can be unfolded first, and then the locking piece 91 is placed on the side wall of the connection between the upper support part 22 and the lower support part 21 along the first direction, and the first slot 911 is opposite to the upper threaded hole, and the second slot 912 is opposite to the lower threaded hole, and then the stud of the first fastener A92 is screwed into the corresponding upper threaded hole through the first slot 911 of the locking piece 91, and the stud of the first fastener B93 is screwed into the corresponding lower threaded hole through the second slot 912 of the locking piece 91, and the locking piece 91 is fixedly connected along the Z axis on the upper support part 22 and the lower support part 21 by tightening the first fastener A92 and the first fastener B93, so that the upper support part 22 remains unfolded compared with the lower support part 21.

[0052] After use, the first fastener A92 and the first fastener B93 can be disassembled to release the fixed connection state between the locking piece 91 and the lower support part 21, so that the upper support part 22 can be folded compared with the lower support part 21.

[0053] Please refer to Figure 5 , as preferred, along the first direction, the second slot 912 penetrates the locking piece 91 away from the lower end of the first slot 911, and forms a guide opening 9121 on the lower end of the locking piece 91 which communicates with the second slot 912; and the locking piece 91 is provided with a bent edge 913 near the upper end of the first slot 911, which can be held by the operator to drive the movement of the locking piece 91.

[0054] In use, the first fastener A92 and the first fastener B93 can be loosened first, so that the locking piece 91 can move up and down under the guidance of the first slot 911 and the second slot 912. When the upper support part 22 is in an unfolded state compared with the lower support part 21, an operator can hold the folded edge 913 by hand and push the locking piece 91 downward, so that the second slot 912 is inserted into the screw rod of the first fastener B93 through the guide opening 9121, and after being pushed into place, the first fastener A92 and the first fastener B93 are locked, so as to maintain the unfolded state of the upper support part 22. When it is necessary to fold the upper support part 22, the operator only needs to loosen the first fastener A92 and the first fastener B93, and then holds the folded edge 913 by hand and lifts the locking piece 91 upward, so that the second slot 912 is separated from the first fastener B93 through the guide opening 9121, and is raised to a position where the locking piece 91 does not affect the normal folding of the upper support part 22. In this way, the unfolding or folding of the upper support part 22 can be achieved without disassembling the locking piece 91, the first fastener A92 and the first fastener B93, which facilitates use.

[0055] Please refer to Figure 4 In some embodiments, the first limiting structure 9 further comprises a compression spring 94 and a stop piece 95, the compression spring 94 and the stop piece 95 are respectively sleeved on the screw rod of the corresponding first fastener A92, and the two ends of the compression spring 94 are respectively elastically abutted between the corresponding screw nut of the first fastener A92 and the stop piece 95, and the stop piece 95 is abutted on the outer surface of the locking piece 91, so as to automatically drive the locking piece 91 to tightly abut the lower support part 21 and the upper support part 22 through the compression spring 94.

[0056] In some embodiments, the device further comprises a first driving mechanism connected between the first movable part 3 and the first support part 2, for driving the first movable part 3 to move.

[0057] Please refer to Figure 1 In some embodiments, the first driving mechanism comprises a driving rack 24 and a rotating part 10, the driving rack 24 extends in the first direction, i.e. the Z-axis direction, and can be coaxially arranged with the first sliding rail 23. The driving rack 24 comprises an upper rack part 241 arranged on the upper support part 22 (as shown in Figure 3 ), and a lower rack part 242 arranged on the lower support part 21 (as shown in Figure 3 ).

[0058] The rotating part 10 is rotatably connected to the first movable part 3 through a driving shaft 11 extending in the third direction, and a driving gear 12 engaged with the driving rack 24 is coaxially connected to the driving shaft 11. The driving gear 12 is a helical gear.

[0059] The third direction is perpendicular to the first direction and the second direction. In order to facilitate understanding of the technical solution of the present application, the third direction is represented by a Y axis.

[0060] When the rotating member 10 rotates clockwise or counterclockwise relative to the first movable member 3 about the Y axis, the driving shaft 11 drives the driving gear 12 to rotate, which in turn drives the first movable member 3 to reciprocate along the Z axis relative to the first support member 2 under the guidance of the driving rack 24, thereby achieving height adjustment of the liquid level gauge in the Z axis direction.

[0061] The matching of the helical rack and the helical gear can significantly improve the accuracy of height adjustment of the liquid level gauge in the Z axis direction. By selecting appropriate rack and gear, the accuracy of Z axis adjustment can be controlled within 1 mm. Moreover, the matching of the helical gear and the helical rack can withstand greater load, and the friction is small during driving, with high transmission efficiency.

[0062] The driving member can be manually controlled rotation or mechanically controlled rotation, and the present application does not limit this. It can drive the first movable member 3 to move by rotating the driving member.

[0063] Please refer to Figure 1 In some embodiments, when the upper support part 22 is in a folded state relative to the lower support part 21, the upper rack part 241 faces away from the lower rack part 242, so as to ensure that after the upper support part 22 is folded, the first movable member 3 can still be adjusted in height on the lower support part 21, so as to adapt to the working environment with limited space height.

[0064] Please refer to Figure 1 In some embodiments, the first driving mechanism further comprises a first driving member 13, which is arranged on the outer end surface of the rotating member 10 away from the driving shaft 11 in the third direction, i.e. the Y axis direction. The first driving member 13 is arranged in the axial direction away from the driving shaft 11, and the first driving member 13 is configured to be held by hand.

[0065] The first driving member 13 can be arranged in a cylindrical structure that can be held by hand, and the driving member can be arranged in a disc-shaped structure coaxial with the driving shaft 11 and the driving gear 12. The first driving member 13, the rotating member 10 and the driving shaft 11 constitute a crank structure for driving the driving gear 12 to rotate. When in use, the first movable member 3 can be driven to move by shaking the first driving member 13, which is more labor-saving and convenient to operate.

[0066] Please refer to Figure 3In some embodiments, the device further comprises a second limiting structure 14 and a third limiting structure 15. The second limiting structure 14 is arranged between the first movable member 3 and the first support member 2, and is configured to limit the position of the first movable member 3 on the first support member 2, so that the clamping assembly 6 is in a limited position in the first direction, i.e., the Z-axis direction.

[0067] The third limiting structure 15 is arranged between the second movable member 5 and the second support member 4, and is configured to limit the position of the second movable member 5 on the second support member 4, so that the clamping assembly 6 is in a limited position in the second direction, i.e., the X-axis direction.

[0068] The device achieves precise positioning of the clamping assembly 6 in the Z-axis direction and the X-axis direction through the second limiting structure 14 and the third limiting structure 15, avoiding position changes of the first movable member 3 and the second movable member 5 after the liquid level meter is calibrated to the target height, and ensuring the accuracy of the liquid level meter detection results.

[0069] Please refer to Figure 6 In some embodiments, the second limiting structure 14 comprises a second fastener 141, which is threadedly connected to the first movable member 3, and at least part of the second fastener 141 is stopped on the first support member 2, so as to lock and fix the first movable member 3 and the first support member 2.

[0070] The third limiting structure 15 comprises a third fastener 151, which is threadedly connected to the second movable member 5, and at least part of the third fastener 151 is stopped on the second support member 4, so as to lock and fix the second movable member 5 and the second support member 4.

[0071] The second fastener 141 and the third fastener 151 can be a fastening screw. The first movable member 3 is provided with a second threaded hole (not shown in the figure) matched with the second fastener 141. The second threaded hole can pass through the first movable member 3 in the second direction or the third direction, and at least part of the second threaded hole is opposite to the first support member 2. The second fastener 141 is threadedly connected to the second threaded hole. By tightening the second fastener 141, the first movable member 3 is locked and fixed to the first support member 2, achieving position limitation of the first movable member 3. By loosening the second fastener 141, the position limitation of the first movable member 3 is released, achieving position adjustment of the first movable member 3 in the first direction.

[0072] The second movable part 5 is provided with a third threaded hole (not shown in the figure) matched with the third fastener 151. The third threaded hole can pass through the second movable part 5 in the first direction or the third direction, and the third threaded hole is opposite to at least part of the second support part 4. The third fastener 151 is screwed in the third threaded hole, and the second movable part 5 is locked and fixed to the second support part 4 by screwing the third fastener 151, so as to limit the position of the second movable part 5; the position limitation of the second movable part 5 is released by unscrewing the third fastener 151, so as to adjust the position of the second movable part 5 in the second direction.

[0073] In order to facilitate manual operation, the nut part of the second fastener 141 and the third fastener 151 can be provided as a structure convenient for holding and rotating by hand, for example, the nut part of the second fastener 141 and the third fastener 151 can be provided as a butterfly nut, a goat horn nut, a lever-shaped structure, a friction column-shaped structure, etc., which is not limited in the present application, and is convenient for manual rotation operation.

[0074] Please refer to Figure 2 In some embodiments, the device of the present application further comprises a second driving part 16, which is provided on the second movable part 5, and the second driving part 16 is configured to be held by hand.

[0075] The second driving part 16 can be provided as a columnar structure extending in the first direction. When in use, the operator can hold the second driving part 16 by hand to drive the second movable part 5 to reciprocate along the second direction compared with the second support part 4, so as to adjust the position of the liquid level meter in the X-axis direction, which is convenient for use.

[0076] Please refer to Figure 2 and Figure 6 In some embodiments, the clamping assembly 6 of the device of the present application comprises a first clamping arm 61, a second clamping arm 62 and a fourth fastener 63. The first clamping arm 61 is fixedly connected to the second movable part 5, and at least one first linear groove 612 extending in the first direction is formed in the first surface 611 of the first clamping arm 61 facing away from the second movable part 5 (as shown in Figure 2 ).

[0077] The second clamping arm 62 is movably connected to the first clamping arm 61, and the second clamping arm 62 is configured to be opened and closed compared with the first clamping arm 61. At least one second linear groove 622 extending in the first direction is formed in the second surface 621 of the second clamping arm 62 facing the first surface 611 (as shown in Figure 2 ).

[0078] The fourth fastener 63 is movably connected between the first clamping arm 61 and the second clamping arm 62, and is configured to lock and fix the first clamping arm 61 and the second clamping arm 62 in the closed state, and to make the first wire slot 612 and the corresponding second wire slot 622 close to clamp the liquid level meter. For the cable liquid level meter, the first wire slot 612 and the corresponding second wire slot 622 close to clamp the cable of the cable liquid level meter.

[0079] The number, position, shape, and depth of the second wire slots 622 on the second clamping arm 62 are matched with the first wire slots 612 on the first clamping arm 61. In the closed state, the first surface 611 of the first clamping arm 61 and the second surface 621 of the second clamping arm 62 are in close contact, so that the first wire slot 612 and the corresponding second wire slot 622 close to clamp the liquid level meter or the cable of the cable liquid level meter.

[0080] The different wire slots on each clamping arm have different depths to clamp liquid level meters of different thicknesses or cables of cable liquid level meters of different specifications.

[0081] Please refer to Figure 2 In some embodiments, the first clamping arm 61 and the second clamping arm 62 can be provided in a flat plate structure, and the first surface 611 and the second surface 621 are in a vertical plane. The X-axis of the first clamping arm 61 and the second clamping arm 62 is movably connected to one end by the first pin shaft 64 arranged along the Z-axis and is opened and closed, and the fourth fastener 63 is movably connected to the other end of the X-axis of the first clamping arm 61 and the second clamping arm 62.

[0082] The fourth fastener 63 includes an eye bolt 631 and a hand screw nut 632. The eye bolt 631 is movably connected to the other end of the X-axis of the first clamping arm 61 by the second pin shaft 65 arranged along the Z-axis, and the hand screw nut 632 is threadedly connected to the outer end of the screw rod of the eye bolt 631.

[0083] The other end of the X-axis of the second clamping arm 62 is provided with a groove 623 for embedding at least part of the screw rod of the eye bolt 631. In the closed state of the first clamping arm 61 and the second clamping arm 62, the eye bolt 631 can be manually swung around the second pin shaft 65 to embed at least part of the screw rod in the groove 623 of the second clamping arm 62, and then the hand screw nut 632 is manually tightened to lock and fix the first clamping arm 61 and the second clamping arm 62, so that the first wire slot 612 and the corresponding second wire slot 622 close to clamp the liquid level meter. After use, the hand screw nut 632 is loosened, and then the eye bolt 631 is swung around the second pin shaft 65 in the opposite direction to disengage the screw rod from the second clamping arm 62, so that the second clamping arm 62 can be manually opened relative to the first clamping arm 61 to facilitate removal of the liquid level meter.

[0084] The above merely illustrates the embodiments of the present application, and does not limit the patent scope of the present application, and any equivalent structure or equivalent process transformation, or direct or indirect application in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A liquid level gauge auxiliary calibration device for calibrating a liquid level gauge to a target height, characterised in that, The device comprises: a seat body (1); a first support (2) connected to the seat body (1) along a first direction, comprising a lower support part (21) fixedly connected to the seat body (1), and an upper support part (22) movably connected to the lower support part (21) through a folding hinge (7), the upper support part (22) being configured to be in an unfolded state or in a folded state relative to the lower support part (21); a first movable part (3) movably connected to the first support (2), the first movable part (3) being configured to reciprocally move along the first direction relative to the first support (2); a second support (4) connected to the first movable part (3) along a second direction, the second direction being perpendicular to the first direction; a second movable part (5) movably connected to the second support (4), the second movable part (5) being configured to reciprocally move along the second direction relative to the second support (4); a clamping assembly (6) connected to the second movable part (5) for clamping the liquid level meter.

2. The liquid level gauge auxiliary calibration device according to claim 1, characterized in that The device further comprises: a first limiting structure (9) arranged between the upper support part (22) and the lower support part (21), the first limiting structure (9) being configured to limit the upper support part (22) to be in the unfolded state relative to the lower support part (21), so that the first support (2) has a maximum length in the first direction.

3. The liquid level gauge auxiliary calibration device according to claim 2, characterized in that The first limiting structure (9) comprises: a locking part (91) having first and second slots (911, 912) respectively arranged at two ends thereof and extending along the first direction; a first fastener A (92) threadedly connected to the upper support part (22) and at least partially arranged in the first slot (911) and abutting against the locking part (91); a first fastener B (93) threadedly connected to the lower support part (21) and at least partially arranged in the second slot (912) and abutting against the locking part (91).

4. The liquid level gauge auxiliary calibration device of claim 1, wherein, The device further comprises: a first driving mechanism connected between the first movable part (3) and the first support (2) for driving the first movable part (3) to move.

5. The liquid level gauge auxiliary calibration device according to claim 4, characterized in that The first driving mechanism comprises: a driving rack (24) extending along the first direction, comprising an upper rack part (241) arranged on the upper support part (22) and a lower rack part (242) arranged on the lower support part (21); the driving rack (24) is a helical gear rack; a rotating part (10) rotatably connected to the first movable part (3) through a driving shaft (11) extending along a third direction, the driving shaft (11) having a driving gear (12) coaxially connected thereto and engaged with the driving rack (24), the driving gear (12) being a helical gear; the third direction being perpendicular to the first direction and the second direction.

6. The liquid level gauge auxiliary calibration device according to claim 5, characterized in that When the upper support part (22) is in the folded state relative to the lower support part (21), the upper rack part (241) faces away from the lower rack part (242).

7. The liquid level gauge auxiliary calibration device according to claim 5, characterized in that The first driving mechanism further comprises: a first driving member (13) disposed on an outer end surface of the rotating member (10) away from the driving shaft (11) in the third direction, the first driving member (13) being arranged axially offset from the driving shaft (11), the first driving member (13) being configured to be held by hand.

8. The liquid level gauge auxiliary calibration device of claim 1, wherein, The device further comprises: a second limiting structure (14) disposed between the first movable member (3) and the first support member (2), the second limiting structure (14) being configured to limit the position of the first movable member (3) on the first support member (2) so that the clamping assembly (6) is in a limited position in the first direction; a third limiting structure (15) disposed between the second movable member (5) and the second support member (4), the third limiting structure (15) being configured to limit the position of the second movable member (5) on the second support member (4) so that the clamping assembly (6) is in a limited position in the second direction.

9. The liquid level gauge auxiliary calibration device of claim 1, wherein, The device further comprises: a second driving member (16) disposed on the second movable member (5), the second driving member (16) being configured to be held by hand.

10. The liquid level gauge auxiliary calibration device of claim 1, wherein, The clamping assembly (6) comprises: a first clamping arm (61) fixedly connected to the second movable member (5), a first surface (611) of the first clamping arm (61) away from the second movable member (5) being recessed to form at least one first wire groove (612) extending in the first direction; a second clamping arm (62) movably connected to the first clamping arm (61), the second clamping arm (62) being configured to be opened and closed relative to the first clamping arm (61); a second surface (621) of the second clamping arm (62) facing the first surface (611) being recessed to form at least one second wire groove (622) extending in the first direction; a fourth fastening member (63) movably connected between the first clamping arm (61) and the second clamping arm (62), the fourth fastening member (63) being configured to lock and fix the first clamping arm (61) and the second clamping arm (62) in a closed state, and make the first wire groove (612) and the corresponding second wire groove (622) close to clamp the liquid level meter.

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