Tool for detecting air tightness of liquid hole plug of small cover of lead-acid storage battery

Abstract

The utility model relates to a tool for detecting the air tightness of a liquid hole plug of a small cover of a lead-acid storage battery. Belongs to the technical field of lead-acid storage batteries. The problem that whether the liquid hole plug is installed in place or not cannot be recognized in the installation process of the small cover of the battery is mainly solved. The tool is mainly characterized in that the tool is composed of a tool base, toggle clamps, an upper pressing block and a lower pressing block; the toggle clamp and the lower pressing block are arranged on the tool base, and the upper pressing block is arranged on the toggle clamp; the side part of the upper pressing block is hollowed out, a through hole is formed in the bottom, and an upper polyurethane ring for sealing the bottom through hole is arranged on the bottom through hole; the top surface of the lower pressing block is provided with a lower pressing block groove and a lower polyurethane ring for sealing the open end of the lower pressing block groove, and the lower pressing block is provided with a connecting pipe communicated with the lower pressing block groove; and the upper rubber ring and the lower rubber ring are oppositely matched. The device has the characteristics of simple structure, convenience in operation and high reliability in detecting the airtightness of the liquid hole plug of the small cover of the battery, and is mainly used for detecting the airtightness of the liquid hole plug in a liquid hole plug mounting process.

Description

Technical Field

[0001] The utility model belongs to the technical field of lead-acid batteries, and specifically relates to a tool for detecting the air tightness of a liquid hole plug in a small cover of a lead-acid battery, which is suitable for the installation process of the liquid hole plug in a small cover of a lead-acid battery. Background Art

[0002] Lead-acid batteries are usually composed of four parts: reaction part, connection part, container part, and packaging part. The container part includes battery slot, large battery cover, small battery cover, etc. The main function of the battery container part is to seal the battery to prevent the electrolyte inside the battery from leaking.

[0003] In order to facilitate customers to check or maintain the battery, some lead-acid battery products have a liquid hole plug 2 on the battery cover 1, such as Figures 1 to 3 As shown, each liquid hole plug 2 corresponds to a single grid. When installing the liquid hole plug 2, it is necessary to put the liquid hole plug 2 into the liquid hole plug hole of the battery cover 1, and then use an electric screwdriver or a pneumatic screwdriver to twist the liquid hole plug groove 4 so that the liquid hole plug 2 and the battery cover 1 are tightly combined without air leakage.

[0004] However, in the actual production process, due to the quality problems of the battery cover 1 and the liquid hole plug 2 themselves and the influence of the installation process (such as operating techniques, the twisting torque of the air screwdriver and the electric screwdriver, etc.), the liquid hole plug 2 may not be installed properly. This situation cannot be identified in the liquid hole plug installation process. After the battery cover 1 is used, there is a certain probability that the 100% airtightness test of the battery before the final inspection before leaving the factory will not detect the micro-leakage of the liquid hole plug 2. After the battery with poor airtightness of the liquid hole plug 2 flows into the hands of the customer, it is easy for the liquid hole plug 2 to leak electrolyte after the vibration of the vehicle. Summary of the invention

[0005] The purpose of the utility model is to solve the above-mentioned problem and provide a tool for detecting the air tightness of the liquid hole plug of the small cover of the lead-acid battery. The air tightness detection is performed according to the standard during the installation process of the liquid hole plug, so as to reduce the quality risk and ensure the air tightness of the liquid hole plug of the small cover of the battery.

[0006] The technical solution of the utility model is: a tool for detecting the air tightness of the liquid hole plug of a small cover of a lead-acid battery, characterized in that: it is composed of a tool base, a toggle clamp, an upper pressure block and a lower pressure block; the toggle clamp and the lower pressure block are installed on the tool base, and the upper pressure block is installed on the toggle clamp; the side of the upper pressure block is hollowed out, and a through hole is provided at the bottom, and an upper superior rubber ring for closing the bottom through hole is provided; the top surface of the lower pressure block is provided with a lower pressure block groove and a lower superior rubber ring for closing the open end of the lower pressure block groove, and the lower pressure block is provided with a connecting pipe communicated with the lower pressure block groove; the upper superior rubber ring and the lower superior rubber ring are directly matched.

[0007] The toggle clamp described in the technical solution of the utility model is composed of a toggle clamp seat, an toggle clamp handle, a toggle clamp connecting rod and an toggle clamp pressure rod; the upper pressure block is installed and fixed on the toggle clamp pressure rod.

[0008] The toggle clamp seat described in the technical solution of the utility model is a U-shaped clamp seat with two upper ends of different heights; the toggle clamp pressure rod is hinged on the higher upper end; the toggle clamp handle is an L-shaped rod, the corner of the toggle clamp handle is hinged to one end of the toggle clamp connecting rod, and the end of the toggle clamp handle is hinged to one end of the toggle clamp pressure rod; the other end of the toggle clamp connecting rod is hinged to the lower upper end of the U-shaped clamp seat.

[0009] The toggle clamp described in the technical solution of the utility model is installed and fixed on the tooling base through a small column.

[0010] The toggle clamp described in the technical solution of the utility model is fixedly connected to the small column by fastening screws and nuts.

[0011] The upper pressing block described in the technical solution of the utility model is fixedly connected with the toggle clamp through a fixing screw and a nut.

[0012] The nut described in the technical solution of the utility model includes an upper and lower adjustment nut and a fixed nut; the upper and lower adjustment nuts are respectively located at the upper and lower ends of the elbow clamp part passed by the fixed screw; the fixed nut is located at the upper end of the upper pressure block passed by the fixed screw.

[0013] The upper pressing block described in the technical solution of the utility model is circular, hollowed out inside, and symmetrically provided with four window holes on the side.

[0014] The bottom through hole of the upper pressing block and the groove of the lower pressing block described in the technical solution of the utility model are both circular; the upper and lower rubber rings are circular, and the inner diameter is larger than the top diameter of the liquid hole plug and smaller than the outer diameter of the base of the liquid hole plug.

[0015] The tooling base described in the technical solution of the utility model is composed of a carrier plate and pillars installed on the bottom surface of the carrier plate.

[0016] The lower pressing block is provided with a connecting pipe which is connected with the groove of the lower pressing block; the upper and lower rubber rings are matched with each other.

[0017] The utility model adopts a tooling for detecting the air tightness of the liquid hole plug of a small cover of a lead-acid storage battery, which is composed of a tooling base, a toggle clamp, an upper pressure block and a lower pressure block, wherein the toggle clamp and the lower pressure block are installed on the tooling base, the upper pressure block is installed on the toggle clamp, the side is hollowed out, a through hole is provided at the bottom, an upper superior rubber ring for closing the bottom through hole is provided, a lower pressure block groove and a lower superior rubber ring for closing the open end of the lower pressure block groove are provided on the top surface of the lower pressure block, a connecting pipe communicating with the lower pressure block groove is provided on the lower pressure block, and the upper superior rubber ring is provided on the upper surface of the lower pressure block. The upper and lower superior rubber rings are matched with the lower superior rubber rings. Therefore, when the battery cover liquid hole plug air tightness test tool is used, the part of the battery cover with the liquid hole plug is placed between the upper pressing block and the lower pressing block, and the upper pressing block is driven downward by operating the elbow clamp to make the upper and lower pressing blocks fix the liquid hole plug part of the battery cover through the superior rubber rings. Clean water is put into the upper pressing block and compressed air is passed into the connecting pipe. If bubbles appear in the clean water, it proves that the air tightness of the liquid hole plug of the battery cover is unqualified. If there are no bubbles, it means that the air tightness is qualified.

[0018] The utility model has the characteristics of simple structure, convenient operation and high reliability in detecting the air tightness of the liquid hole plug of a small battery cover, and is mainly used for performing air tightness detection on the liquid hole plug of a small battery cover during the liquid hole plug installation process. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a front view of the battery cover.

[0020] Figure 2 This is a top view of the battery cover.

[0021] Figure 3 for Figure 1 A is a partial enlarged view of the figure.

[0022] Figure 4 It is a structural schematic diagram of the utility model.

[0023] Figure markings: 1-battery small cover, 2-liquid hole plug, 3-liquid hole plug groove; 4-liquid hole plug base; 5-elbow clamp handle; 6-elbow clamp connecting rod; 7-elbow clamp; 8-fastening screw and nut; 9-small column; 10-carrier plate; 11-pillar, 12-elbow clamp pressure rod, 13-fixing screw; 14-fixing nut; 15-upper pressure block; 16-upper superior rubber ring; 17-lower superior rubber ring; 18-lower pressure block; 19-connecting pipe; 20-upper and lower adjustment nuts. DETAILED DESCRIPTION

[0024] The utility model is further described below in conjunction with the accompanying drawings.

[0025] like Figure 4 As shown, an embodiment of a tool for detecting the air tightness of a liquid hole plug of a small cover of a lead-acid storage battery of the utility model is composed of a tool base, a small column 9, a toggle clamp 7, an upper pressing block 15 and a lower pressing block 18.

[0026] The tooling base is composed of a carrier plate 10 and pillars 11. The carrier plate 10 is a rectangular plate, and the carrier plate 10 is mounted on four cylindrical pillars 11. The small pillars 9 are mounted on the upper surface of the carrier plate 10, and a mounting plate is provided on the top of the small pillars 9.

[0027] The elbow clamp 7 is composed of an elbow clamp seat, an elbow clamp handle 5, an elbow clamp connecting rod 6 and an elbow clamp pressure rod 12. The elbow clamp seat is a U-shaped clamp seat with two upper ends of different heights. A connecting plate is provided at the bottom of the U-shaped clamp seat, and the connecting plate is connected to the mounting plate by four fastening screws and nuts. The elbow clamp handle 5 is an L-shaped rod, which is composed of a long straight rod and a short straight rod, and the angle between the long straight rod and the short straight rod is an obtuse angle. The corner of the long straight rod and the short straight rod of the elbow clamp handle 5 is hinged to one end of the elbow clamp connecting rod 6, and the end of the short straight rod is hinged to the upper part of the left end of the elbow clamp pressure rod 12. The other end of the elbow clamp connecting rod 6 is hinged to the lower upper end of the U-shaped clamp seat. The lower left end of the elbow clamp pressure rod 12 is hinged to the higher upper end of the U-shaped clamp seat. A fixing screw 13 is passed through the right end of the toggle clamp pressure rod 12 , and upper and lower adjustment nuts 20 are provided on the fixing screw 13 located at the upper and lower sides of the toggle clamp pressure rod 12 for adjusting the position of the fixing screw 13 relative to the toggle clamp pressure rod 12 .

[0028] The side of the upper pressing block 15 is hollowed out, and a through hole is provided at the bottom, which is connected to the hollow part. An upper rubber ring 16 is provided on the bottom through hole to seal it. The bottom through hole of the upper pressing block 15 is circular, and the upper rubber ring 16 is circular, and its inner diameter is larger than the top diameter of the liquid hole plug 2 and smaller than the outer diameter of the liquid hole plug base 4. The top of the upper pressing block 15 is fixed to the fixing screw 13 passing through the upper pressing block 15 by a fixing nut 14.

[0029] The lower pressing block 18 is installed and fixed on the carrier plate 10. The top surface of the lower pressing block 18 is provided with a lower pressing block groove and a lower excellent rubber ring 17 that closes the open end of the lower pressing block groove. The bottom of the lower pressing block 18 is connected to the carrier plate 10 and has a hole. A connecting pipe 19 is connected below the hole. The connecting pipe 19 is connected to the lower pressing block groove and can be connected to the air compression equipment. The lower pressing block groove is a circular groove, and the lower excellent rubber ring 17 is circular, and the inner diameter is larger than the top diameter of the liquid hole plug 2 and smaller than the outer diameter of the liquid hole plug base 4.

[0030] The upper superior rubber ring 16 is matched with the lower superior rubber ring 17. The toggle clamp handle 5 is lifted upward, and the toggle clamp pressure rod 12 is pulled by the toggle clamp connecting rod 6, so that the toggle clamp pressure rod 12 brings the upper pressure block 15 up; the toggle clamp handle 5 is pressed upward, and the toggle clamp pressure rod 12 is pulled by the toggle clamp connecting rod 6, so that the toggle clamp pressure rod 12 brings the upper pressure block 15 down.

[0031] When the battery cover liquid hole plug air tightness test tool is used, the battery cover 1 with the liquid hole plug 2 is placed between the upper pressing block 15 and the lower pressing block 18. The elbow clamp handle 5 is pressed downward to drive the upper pressing block 15 downward, so that the upper and lower pressing blocks 15 and 18 fix the liquid hole plug 2 of the battery cover 1 through the upper and lower elastic rings 16 and 17. Put clean water into the upper pressing block 15 and pass compressed air (0.1Mpa-0.2Mpa) into the connecting pipe 19. At this time, if bubbles appear in the clean water, it proves that the air tightness of the liquid hole plug 2 of the battery cover 1 is unqualified, and no bubbles indicate that the air tightness is qualified.

[0032] Inspection frequency standards: 1. At the start of a shift; 2. When the battery cover 1 and liquid hole plug 2 are replaced with the next batch during installation; 3. When the torque of the pneumatic screwdriver or electric screwdriver changes; 4. When the operator or equipment changes.

Claims

1. A tool for detecting the air tightness of the liquid hole plug of a small cover of a lead-acid battery, characterized by: The utility model is composed of a tooling base, an elbow clamp (7), an upper pressure block (15) and a lower pressure block (18); the elbow clamp (7) and the lower pressure block (18) are installed on the tooling base; the elbow clamp (7) is composed of an elbow clamp seat, an elbow clamp handle (5), an elbow clamp connecting rod (6) and an elbow clamp pressure rod (12); the upper pressure block (15) is installed and fixed on the elbow clamp pressure rod (12); the side of the upper pressure block (15) is hollowed out, and a through hole is provided at the bottom, and an upper excellent rubber ring (16) is provided on the bottom through hole to close it; the top surface of the lower pressure block (18) is provided with a lower pressure block groove and a lower excellent rubber ring (17) that closes the open end of the lower pressure block groove, and the lower pressure block (18) is provided with a connecting pipe (19) that communicates with the lower pressure block groove; the upper excellent rubber ring (16) and the lower excellent rubber ring (17) are matched with each other.

2. A tool for detecting the air tightness of the liquid hole plug of a small cover of a lead-acid battery according to claim 1, characterized in that: The toggle clamp seat is a U-shaped clamp seat with two upper ends of different heights; the toggle clamp pressure rod (12) is hinged on the higher upper end; the toggle clamp handle (5) is an L-shaped rod, the corner of the toggle clamp handle (5) is hinged to one end of the toggle clamp connecting rod (6), the end of the toggle clamp handle (5) is hinged to one end of the toggle clamp pressure rod (12); the other end of the toggle clamp connecting rod (6) is hinged to the lower upper end of the U-shaped clamp seat.

3. A tool for detecting the air tightness of the liquid hole plug of a small cover of a lead-acid battery according to claim 1 or 2, characterized in that: The toggle clamp (7) is fixed on the tooling base via a small column (9).

4. A tool for detecting the air tightness of the liquid hole plug of a small cover of a lead-acid battery according to claim 3, characterized in that: The toggle clamp (7) is fixedly connected to the small column (9) by fastening the screw nut (8).

5. A tool for detecting the air tightness of the liquid hole plug of a small cover of a lead-acid battery according to claim 1, 2 or 4, characterized in that: It also includes nuts; the nuts include upper and lower adjustment nuts (20) and a fixing nut (14); the upper and lower adjustment nuts (20) are respectively located at the upper and lower ends of the toggle clamp (7) through which the fixing screw (13) passes; the fixing nut (14) is located at the upper end of the upper pressing block (15) through which the fixing screw (13) passes.

6. A tool for detecting the air tightness of the liquid hole plug of a small cover of a lead-acid battery according to claim 1, 2 or 4, characterized in that: The upper pressing block (15) is fixedly connected to the toggle clamp (7) via a fixing screw (13) and a nut.

7. A tool for detecting the air tightness of the liquid hole plug of a small cover of a lead-acid battery according to claim 1, 2 or 4, characterized in that: The upper pressing block (15) is circular, hollow inside, and has four window holes symmetrically opened on the side.

8. The tool for detecting the air tightness of the liquid hole plug of the small cover of the lead-acid battery according to claim 7 is characterized in that: The through hole at the bottom of the upper pressing block and the groove at the lower pressing block are both circular; the upper and lower rubber rings (16 and 17) are circular, and their inner diameters are larger than the top diameter of the liquid hole plug (2) and smaller than the outer diameter of the liquid hole plug base (4).

9. A tool for detecting the air tightness of the liquid hole plug of a small cover of a lead-acid battery according to any one of claims 1-2, 4, and 8, characterized in that: The tooling base is composed of a carrier plate (10) and a support column (11) mounted on the bottom surface of the carrier plate (10).

Images