Cylinder pressure gauge for cylinder pressure test

Abstract

The utility model relates to the technical field of pressure gauges, and discloses a cylinder pressure gauge for cylinder pressure testing, which comprises a dial plate, an air inlet is fixedly connected to the bottom of the dial plate, a perforated bolt is fixedly mounted at the top of the dial plate, a check valve is in threaded connection with the surface of the air inlet, and a release valve is fixedly connected to one side of the check valve. The bottom of the check valve is provided with an air cylinder lengthening rod and a rubber connecting pipe. According to the cylinder pressure gauge for cylinder pressure testing, the open bolt is arranged at the top of the dial plate, so that the portability of the device is greatly improved, and meanwhile, the situation that when the device is held to move, a hand slips to cause falling and damage of the instrument is avoided, and the two check valves are arranged at the bottom of the dial plate; the device can be simultaneously connected with a cylinder lengthening rod and a rubber connecting pipe, different devices can be used according to different scenes, time waste caused by repeated installation of different devices is avoided, and the measuring flexibility of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure gauges, in particular to a cylinder pressure gauge for cylinder pressure testing. Background Technique

[0002] Cylinder pressure gauges play an important role in the field of automobile maintenance and testing. They are mainly used to detect the compression pressure of engine cylinders to judge the sealing performance of the cylinders. By measuring the cylinder pressure, faults such as insufficient cylinder pressure, vibration, and power decline caused by mechanical natural wear, valve carbon deposition, etc. can be detected in time, providing reference for the detection and repair of engines or evaluating the repair quality of engines. In addition, cylinder pressure gauges can also be used to measure and monitor the pressure of the circulation system of automobile engines in real time, and are reliable tools for automobile repair technicians to accurately diagnose and repair faults.

[0003] Chinese Patent Publication No. CN217980429U discloses a cylinder pressure gauge for cylinder pressure testing, including a pressure gauge body and a meter cover. The meter cover is arranged on the top of the pressure gauge body. Both sides of the top of the pressure gauge body are fixedly connected with positioning columns, and positioning grooves for cooperating with the positioning columns are respectively opened on both sides of the bottom of the meter cover. An activity groove is opened at the top of the left positioning groove. By setting the cooperation of the fixing mechanism, the fixing groove and the control mechanism, when pushing the push block, while the push block drives the movable rod to rotate, the movable rod drives the fixing column to be pulled out of the inner cavity of the positioning groove through the sliding rod, and at the same time, the fixing column drives the limiting plate to slide in the inner cavity of the activity groove and compress the spring, solving the problem that the existing cylinder pressure gauge is installed with the meter cover through threads, and during maintenance, it is easy to cause the meter cover to become thread-sliding, making the meter cover unable to be tightly connected to the cylinder pressure gauge, affecting the use of the cylinder pressure gauge.

[0004] However, when this utility model is actually used, the following problems exist:

[0005] 1. When this utility model is actually used, technicians cannot carry it with them and cannot perform immediate detection on the engine at any time, affecting work efficiency and response speed;

[0006] 2. When this utility model is actually used, the rubber connecting pipe and the cylinder extension rod cannot be installed on the pressure gauge at the same time, and need to be replaced back and forth during use. Content of the Utility Model

[0007] (1) Technical Problems to be Solved

[0008] In order to overcome the above defects of the prior art, the utility model provides a cylinder pressure gauge for cylinder pressure testing, which solves the problems in the prior art:

[0009] 1. When the utility model is actually used, technicians cannot carry it with them, and cannot conduct immediate detection on the engine at any time and place, which affects work efficiency and response speed.

[0010] 2. When the utility model is actually used, the rubber connecting pipe and the cylinder extension rod cannot be installed on the pressure gauge at the same time, and there is a problem that they need to be replaced back and forth during use.

[0011] (2) Technical solutions

[0012] To achieve the above purposes, the utility model is realized through the following technical solutions: A cylinder pressure gauge for cylinder pressure testing, including a dial plate, the bottom of the dial plate is fixedly connected with an air inlet, the top of the dial plate is fixedly installed with an opening bolt, a check valve is threadedly connected to the surface of the air inlet, a release valve is fixedly connected to one side of the check valve, a cylinder extension rod is arranged at the bottom of the check valve, and a rubber connecting pipe is arranged at the bottom of the check valve.

[0013] According to an embodiment of the utility model, a pointer for reading is fixedly installed on one side of the dial plate, and a glass plate for observation is opened on one side of the dial plate.

[0014] According to an embodiment of the utility model, a joint is fixedly connected to the top of the air inlet, and a fixing ring is sleeved on the surface of the joint.

[0015] According to an embodiment of the utility model, a hole is arranged in the middle of the opening bolt, and a lifting ring for portability is inserted through the middle of the hole.

[0016] According to an embodiment of the utility model, a connecting ring is fixedly connected to the bottom of the check valve, and a coupler is fixedly connected to the bottom of the connecting ring.

[0017] According to an embodiment of the utility model, a torsion bar is fixedly connected to one side of the release valve, and a closer is fixedly connected to one side of the torsion bar.

[0018] According to an embodiment of the utility model, an insertion port for air intake is fixedly connected to the top of the cylinder extension rod, a conical rubber head for sealing is sleeved on the surface of the cylinder extension rod, and the top of the cylinder extension rod is inserted into the bottom of the check valve through the insertion port.

[0019] According to an embodiment of the utility model, a protective sleeve is fixedly connected to the top of the rubber connecting pipe, a threaded joint is fixedly connected to the top of the rubber connecting pipe, and the top of the rubber connecting pipe is inserted into the bottom of the check valve through the protective sleeve.

[0020] (3) Beneficial effects

[0021] The utility model provides a cylinder pressure gauge for cylinder pressure testing, which has the following beneficial effects:

[0022] For the cylinder pressure gauge for cylinder pressure testing, by providing an opening bolt at the top of the dial, the portability of the device is greatly improved. At the same time, it also avoids the situation that the instrument drops and is damaged due to hand slipping when holding the device and moving it. Technicians can easily put it into a toolbox or backpack and quickly take it out for use when needed. By providing two check valves at the bottom of the dial, the device can be connected to the cylinder extension rod and the rubber connecting pipe at the same time, and different devices can be used according to different scenarios, avoiding the time waste caused by repeatedly installing different devices and increasing the measurement flexibility of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic structural diagram of the utility model;

[0024] Figure 2 is a schematic structural diagram of the pressure gauge of the utility model;

[0025] Figure 3 is a schematic structural diagram of the air inlet of the utility model;

[0026] Figure 4 is a schematic structural diagram of the release valve of the utility model;

[0027] Figure 5 is a schematic structural diagram of the cylinder extension rod of the utility model;

[0028] Figure 6 is a schematic structural diagram of the rubber connecting pipe of the utility model.

[0029] In the figure: 1, dial; 2, air inlet; 3, opening bolt; 4, check valve; 5, release valve; 6, cylinder extension rod; 7, rubber connecting pipe; 8, pointer; 9, glass plate; 10, joint; 11, fixing ring; 12, hole; 13, lifting ring; 14, connecting ring; 15, coupler; 16, torsion bar; 17, closer; 18, socket; 19, conical rubber head; 20, protective sleeve; 21, threaded joint. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts shall fall within the protection scope of the present utility model.

[0031] Embodiment 1:

[0032] Please refer to Figures 1 to 6, the present utility model provides a technical solution: a cylinder pressure gauge for cylinder pressure testing. In order to make the device convenient for reading and portable, a dial 1 and an opening bolt 3 are provided;

[0033] It includes a dial 1. An opening bolt 3 is fixedly installed at the top of the dial 1. A pointer 8 for reading is fixedly installed on one side of the dial 1. A glass plate 9 for observation is provided on one side of the dial 1. A hole 12 is provided in the middle of the opening bolt 3. A lifting ring 13 for portability is inserted through the middle of the hole 12. Therefore, the setting of the pointer 8 is to facilitate reading when using the device. The setting of the glass plate 9 is to protect the pointer 8 while avoiding damage caused by external factors. The setting of the hole 12 is to facilitate fixing the lifting ring 13 inside to prevent it from moving. The setting of the lifting ring 13 is to be able to tie a rope to the lifting ring 13 for easy carrying.

[0034] Embodiment Two:

[0035] In order to make the device convenient for conduction, an air inlet 2, a check valve 4 and a release valve 5 are provided;

[0036] The bottom of the dial 1 is fixedly connected to an air inlet 2. A check valve 4 is threadedly connected to the surface of the air inlet 2. A release valve 5 is fixedly connected to one side of the check valve 4. The top of the air inlet 2 is fixedly connected to a joint 10. A fixing ring 11 is sleeved on the surface of the joint 10. The bottom of the check valve 4 is fixedly connected to a connecting ring 14. The bottom of the connecting ring 14 is fixedly connected to a coupler 15. A torsion bar 16 is fixedly connected to one side of the release valve 5. A closer 17 is fixedly connected to one side of the torsion bar 16. Therefore, the setting of the joint 10 is to fix the air inlet 2 to prevent it from shifting. The setting of the fixing ring 11 is to protect the joint 10 and the air inlet 2 and prevent them from being bent. The setting of the connecting ring 14 is to fixedly connect the check valve 4 and the coupler 15. The setting of the coupler 15 is to ensure the accurate transmission of gas pressure during the measurement process. The setting of the torsion bar 16 is to drive the torsion bar 16 to rotate when the release valve 5 is rotated, thereby activating the closer 17. The setting of the closer 17 is to open and close when needed.

[0037] Embodiment Three:

[0038] In order to make the device convenient for measurement, a cylinder extension rod 6 and a rubber connecting pipe 7 are provided;

[0039] The bottom of the check valve 4 is provided with a cylinder extension rod 6. The bottom of the check valve 4 is provided with a rubber connecting pipe 7. The top of the cylinder extension rod 6 is fixedly connected with an insertion interface 18 for air intake. The surface of the cylinder extension rod 6 is sleeved with a conical rubber head 19 for sealing. The top of the cylinder extension rod 6 is inserted into the bottom of the check valve 4 through the insertion interface 18. The top of the rubber connecting pipe 7 is fixedly connected with a protective sleeve 20. The top of the rubber connecting pipe 7 is fixedly connected with a threaded joint 21. The top of the rubber connecting pipe 7 is inserted into the bottom of the check valve 4 through the protective sleeve 20. Therefore, the setting of the insertion interface 18 is to play a conduction role when using the cylinder extension rod 6. The setting of the conical rubber head 19 is to prevent gas leakage when using the cylinder extension rod 6. The setting of the protective sleeve 20 is to conduct gas when using the rubber connecting pipe 7. The setting of the threaded joint 21 is to be screwed into the threaded hole of the spark plug.

[0040] In the present utility model, the working steps of the device are as follows:

[0041] First, tighten the check valve 4 on the air intake port 2, and then connect the cylinder extension rod 6 and the rubber connecting pipe 7 to the two check valves 4 respectively. During the connection process, press firmly to ensure a tight connection without air leakage. Use different devices in different situations. When using the cylinder extension rod 6, install the cylinder extension rod 6 on the cylinder. During the installation process, it is necessary to pay attention to maintaining the straightness and coaxiality of the cylinder extension rod 6 to ensure its normal operation. When using the rubber connecting pipe 7, tighten the threaded joint 21 on the spark plug hole to ensure the sealing performance. When measuring, turn the throttle to the full open position and press the start button until the pointer 8 stops rising.

[0042] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A cylinder pressure gauge for cylinder pressure testing, comprising a dial (1), characterized in that: The bottom of the dial (1) is fixedly connected to an air inlet (2), the top of the dial (1) is fixedly installed with a perforated bolt (3), the surface of the air inlet (2) is threadedly connected to a check valve (4), one side of the check valve (4) is fixedly connected to a release valve (5), the bottom of the check valve (4) is provided with a cylinder extension rod (6), and the bottom of the check valve (4) is provided with a rubber connecting pipe (7).

2. A cylinder pressure gauge for cylinder pressure testing according to claim 1, characterized in that: A pointer (8) for reading is fixedly mounted on one side of the dial (1), and a glass plate (9) for observation is opened on one side of the dial (1).

3. A cylinder pressure gauge for cylinder pressure testing according to claim 1, characterized in that: A joint (10) is fixedly connected to the top of the air inlet (2), and a fixing ring (11) is sleeved on the surface of the joint (10).

4. A cylinder pressure gauge for cylinder pressure testing according to claim 1, characterized in that: A hole (12) is provided in the middle of the hole-opening bolt (3), and a lifting ring (13) for portability is inserted through the middle of the hole (12).

5. The cylinder pressure gauge for cylinder pressure testing according to claim 1, characterized in that: A connecting ring (14) is fixedly connected to the bottom of the check valve (4), and a coupler (15) is fixedly connected to the bottom of the connecting ring (14).

6. A cylinder pressure gauge for cylinder pressure testing according to claim 1, characterized in that: One side of the release valve (5) is fixedly connected to a torsion bar (16), and one side of the torsion bar (16) is fixedly connected to a closer (17).

7. A cylinder pressure gauge for cylinder pressure testing according to claim 1, characterized in that: The top of the cylinder extension rod (6) is fixedly connected with a plug-in interface (18) for air intake, the surface of the cylinder extension rod (6) is sleeved with a conical rubber head (19) for sealing, and the top of the cylinder extension rod (6) is plugged into the bottom of the check valve (4) via the plug-in interface (18).

8. The cylinder pressure gauge for cylinder pressure testing according to claim 1, characterized in that: The top of the rubber connecting tube (7) is fixedly connected to a protective sleeve (20), the top of the rubber connecting tube (7) is fixedly connected to a threaded joint (21), and the top of the rubber connecting tube (7) is plugged into the bottom of the check valve (4) through the protective sleeve (20).

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