Fire extinguisher valve thread verticality testing fixture

Abstract

The utility model discloses a fire extinguisher valve thread verticality testing fixture. The testing fixture comprises a mandrel, a fixing mechanism, a dial indicator, a sliding sleeve and a conduction column. The lower part of the dial indicator is connected with a detection head, and the dial indicator is fixed at the upper end of the mandrel through the fixing mechanism; the sliding sleeve is rotatably arranged on the lower middle portion of the mandrel in a sleeving mode. The conduction column is arranged below the sliding sleeve; a valve mounting hole is formed in the lower end of the mandrel, and threads are arranged on the inner wall of the valve mounting hole; when installation is detected, the connector of the fire extinguisher valve is installed in the valve installation hole in a threaded fit mode, and the conduction column is attached to the connecting end face of the fire extinguisher valve. The fire extinguisher valve thread perpendicularity testing fixture provided by the utility model is simple in structure and convenient to operate, and can accurately and quickly measure the perpendicularity of the valve body connector and the connecting end face in the fire extinguisher valve.

Description

Technical Field

[0001] The utility model relates to the technical field of verticality inspection tools, in particular to a verticality inspection tool for fire extinguisher valve threads. Background Art

[0002] The face-to-face verticality of mechanical parts such as valves is an important quality indicator of the part, which affects the interchangeability and quality of the part, and further affects the quality of the entire mechanical product. In order to ensure the quality and interchangeability of the valve, the verticality error should be detected according to the face-to-face verticality tolerance given in the design. For fire extinguisher valves, the verticality of the valve through hole and the flange end face cannot usually be measured using conventional inspection tools. The verticality error can only be controlled by tooling and process. The verticality error after processing cannot be controlled, which easily leads to excessive opening torque of the valve after assembly and has a greater impact on the valve sealing performance. Utility Model Content

[0003] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a fire extinguisher valve thread verticality inspection tool, which has a simple structure and is easy to operate, and can accurately and quickly measure the verticality of the valve body connector and the connecting end face in the fire extinguisher valve.

[0004] The technical solution adopted by the utility model to solve the technical problem is: a fire extinguisher valve thread verticality inspection tool, the inspection tool comprises a core shaft, a fixing mechanism, a dial indicator, a sliding sleeve and a conductive column; the lower part of the dial indicator is connected to a detection head, and the dial indicator is fixed to the upper end of the core shaft through the fixing mechanism; the sliding sleeve is rotatably sleeved on the middle and lower part of the core shaft; the conductive column is arranged below the sliding sleeve; the lower end of the core shaft is provided with a valve installation hole, and the inner wall of the valve installation hole is provided with a thread; when inspecting and installing, the connecting head of the fire extinguisher valve is installed in the valve installation hole through threaded matching, and the conductive column is attached to the connecting end face of the fire extinguisher valve.

[0005] Furthermore, the fixing mechanism comprises two symmetrically arranged fixing plates, both ends of the two fixing plates are provided with screw holes, and the two fixing plates are installed and fixed by the cooperation of screws and the screw holes.

[0006] Furthermore, after the two fixing plates are installed and fixed, a core shaft installation hole and a dial indicator fixing hole are formed; the core shaft is inserted into the core shaft installation hole, and the dial indicator is installed and fixed through the dial indicator fixing hole.

[0007] Furthermore, a compression spring is provided between the fixing mechanism and the sliding sleeve.

[0008] Furthermore, a conductive column mounting hole is provided at the bottom of the sliding sleeve, a thread is provided in the conductive column mounting hole, a thread is also provided at the tail end of the conductive column, and the conductive column and the conductive column mounting hole are adjusted by threaded cooperation.

[0009] Furthermore, a convex ring is provided at the upper end of the sliding sleeve, and a boss is provided at the middle and lower part of the core shaft; and the convex ring is arranged on the boss.

[0010] The beneficial effects of the utility model are as follows: compared with the prior art, the fire extinguisher valve thread verticality inspection tool provided by the utility model is easy to install and simple to operate. During inspection, it is only necessary to screw the valve connector into the valve mounting hole of the inspection tool so that the lower end of the conduction column is attached to the connection end face of the valve, and the height of the dial indicator is adjusted so that the detection head of the dial indicator is attached to the upper end face of the sliding sleeve; in this way, during the rotation of the sliding sleeve, the conduction column rotates with the sliding sleeve, and transmits the verticality information between the valve connection end face and the connector to the detection head of the dial indicator, and the inspection result can be judged by observing the value on the dial indicator. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a front structural schematic diagram of the inspection tool provided by the utility model.

[0012] Figure 2 This is a schematic diagram of the side structure of the inspection tool provided by the utility model.

[0013] Figure 3 This is a schematic diagram of the cross-sectional structure of the inspection tool provided by the utility model.

[0014] Figure 4 This is a structural disassembly diagram of the inspection tool provided by the utility model.

[0015] Among them, 1- dial indicator; 2- spindle; 3- fixing mechanism; 4- compression spring; 5- sliding sleeve; 6- detection head; 7- conduction column; 8- connecting end face; 9- valve; 10- conduction column mounting hole; 11- connecting head; 12- valve mounting hole; 13- boss; 14- convex ring; 15- fixing plate; 16- screw hole; 17- screw; 18- dial indicator fixing hole; 19- spindle mounting hole. DETAILED DESCRIPTION

[0016] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively with reference to the relevant drawings. The drawings provide preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to provide a more thorough and comprehensive understanding of the contents disclosed in the present invention.

[0017] Example

[0018] like Figures 1 to 4 As shown, a fire extinguisher valve thread verticality inspection tool, the inspection tool includes a core shaft 2, a fixing mechanism 3, a dial indicator 1, a sliding sleeve 5 and a conductive column 7; the lower part of the dial indicator 1 is connected to a detection head 6, and the dial indicator 1 is fixed to the upper end of the core shaft 2 through the fixing mechanism 3; the sliding sleeve 5 is rotatably sleeved on the middle and lower part of the core shaft 2; the conductive column 7 is arranged below the sliding sleeve 5; the lower end of the core shaft 2 is provided with a valve mounting hole 12, and the inner wall of the valve mounting hole 12 is provided with a thread; when inspecting and installing, the connector 11 of the fire extinguisher valve 9 is installed in the valve mounting hole 12 through threaded matching, and the conductive column 7 is attached to the connecting end face 8 of the fire extinguisher valve 9. During the inspection, it is only necessary to screw the connector 11 of the valve 9 into the valve mounting hole 12 of the inspection fixture so that the lower end of the conductive column 7 is close to the connecting end face 8 of the valve 9, and adjust the height of the dial indicator 1 so that the detection head 6 of the dial indicator 1 is close to the upper end face of the sliding sleeve 5; in this way, during the rotation of the sliding sleeve 5, the conductive column 7 rotates with the sliding sleeve 5, and transmits the verticality information between the valve connecting end face 8 and the connector 11 to the detection head 6 of the dial indicator 1, and the inspection result can be judged by observing the value on the dial indicator 1.

[0019] In one embodiment, the fixing mechanism 3 includes two symmetrically arranged fixing plates 15, both ends of the two fixing plates 15 are provided with screw holes 16, and the two fixing plates 15 are installed and fixed by the cooperation of screws 17 and the screw holes 16. After the two fixing plates 15 are installed and fixed, a core shaft installation hole 19 and a dial indicator fixing hole 18 are formed; the core shaft 2 is inserted into the core shaft installation hole 19, and the dial indicator 1 is installed and fixed through the dial indicator fixing hole 18. The dial indicator 1 is connected to the core shaft 2 through the fixing mechanism 3, and the fixing mechanism 3 can adjust the height of the dial indicator 1 on the core shaft 2 according to the detection needs, and it is very convenient to disassemble. The height of the dial indicator 1 is preferably adjusted so that its detection head 6 is in contact with the upper end surface of the sliding sleeve 5.

[0020] In one embodiment, a compression spring 4 is provided between the fixing mechanism 3 and the sliding sleeve 5. The compression spring 4 can ensure that the sliding sleeve 5 is always tightly fitted on the core shaft 2, thereby ensuring the detection accuracy of the inspection tool.

[0021] In one embodiment, the bottom of the sliding sleeve 5 is provided with a conductive column mounting hole 10, the conductive column mounting hole 10 is provided with a thread, the tail end of the conductive column 7 is also provided with a thread, and the conductive column 7 and the conductive column mounting hole 10 are adjusted by threaded cooperation. In order to transmit the verticality information on the valve connection end face 8 to the dial gauge 1, the conductive column 7 is provided at the bottom of the sliding sleeve 5, and the conductive column 7 is screwed into the conductive column mounting hole 10 through a thread. The installation height of the conductive column 7 can be adjusted according to the actual situation of the valve connection end face 8, so that after the valve 9 is installed, the lower end of the conductive column 7 is attached to the connection end face 8 of the valve 9; in this way, after the conductive column 7 rotates one circle with the sliding sleeve 5, the verticality information of the valve connection end face 8 can be transmitted to the detection head 6, and the corresponding numerical result can be read through the dial gauge 1.

[0022] In one embodiment, a convex ring 14 is provided at the upper end of the sliding sleeve 5, and a boss 13 is provided at the middle and lower part of the core shaft 2; the convex ring 14 is arranged on the boss 13. The matching design of the convex ring 14 and the boss 13 can make the sliding sleeve 5 better installed at the middle and lower part of the core shaft 2, thereby ensuring the accuracy of detection.

[0023] The above implementation modes are only used to illustrate the present invention, but not to limit the present invention. Ordinary technicians in the relevant technical field can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, all equivalent technical solutions also belong to the scope of the present invention. The scope of patent protection of the present invention should be limited by the claims.

Claims

1. A fire extinguisher valve thread verticality inspection tool, characterized by: The inspection tool comprises a core shaft, a fixing mechanism, a dial indicator, a sliding sleeve and a conductive column; a detection head is connected to the lower part of the dial indicator, and the dial indicator is fixed to the upper end of the core shaft through the fixing mechanism; the sliding sleeve is rotatably sleeved on the middle and lower part of the core shaft; the conductive column is arranged below the sliding sleeve; a valve mounting hole is opened at the lower end of the core shaft, and a thread is arranged on the inner wall of the valve mounting hole; during the inspection and installation, the connecting head of the fire extinguisher valve is installed in the valve mounting hole through threaded fitting, and the conductive column is attached to the connecting end face of the fire extinguisher valve.

2. A fire extinguisher valve thread verticality inspection tool as claimed in claim 1, characterized in that: The fixing mechanism comprises two symmetrically arranged fixing plates, both ends of the two fixing plates are provided with screw holes, and the two fixing plates are installed and fixed by the cooperation of screws and the screw holes.

3. A fire extinguisher valve thread verticality inspection tool as claimed in claim 2, characterized in that: After the two fixing plates are installed and fixed, a core shaft installation hole and a dial indicator fixing hole are formed; the core shaft is inserted into the core shaft installation hole, and the dial indicator is installed and fixed through the dial indicator fixing hole.

4. A fire extinguisher valve thread verticality inspection tool as claimed in claim 1, characterized in that: A compression spring is arranged between the fixing mechanism and the sliding sleeve.

5. A fire extinguisher valve thread verticality inspection tool as claimed in claim 1, characterized in that: A conductive column mounting hole is provided at the bottom of the sliding sleeve, a thread is provided in the conductive column mounting hole, a thread is also provided at the tail end of the conductive column, and the conductive column and the conductive column mounting hole are adjusted by threaded cooperation.

6. A fire extinguisher valve thread verticality inspection tool as claimed in claim 1, characterized in that: A convex ring is arranged at the upper end of the sliding sleeve, and a boss is arranged at the middle and lower part of the core shaft; the convex ring is arranged on the boss.

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