Hydraulic pump outlet overflow pressure measuring device for electric loader hydraulic system

Abstract

The utility model relates to the technical field of hydraulic pump outlet overflow pressure measurement, in particular to a hydraulic pump outlet overflow pressure measurement device for a hydraulic system of an electric loader, which comprises an outlet pipe and a measurement pipe, the two ends of the measurement pipe are rotatably connected with connecting pipes, and the inner walls of the connecting pipes are in threaded connection with the surface of the outlet pipe; the anti-leakage mechanism comprises a baffle ring fixedly connected to the surface of the outlet pipe; according to the device, through mutual cooperation of a clamping rod, an iron rod and a limiting block, a connecting pipe is locked, a rubber frame slides into the connecting pipe to lock the limiting block, and then it is guaranteed that the iron rod is stably clamped in the connecting pipe; according to the mode, the connecting pipe is stably locked, tight connection of the hydraulic pump outlet pipeline and the measuring pipeline is guaranteed, and therefore the leakage risk is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to hydraulic pump outlet overflow pressure measurement technical field, especially relates to a kind of hydraulic pump outlet overflow pressure measurement devices for electric loader hydraulic system. BACKGROUND

[0002] Electric loader hydraulic system is the key component of electric loader, it is responsible for realizing the various actions of loader, such as lifting, overturning, steering etc. After the production or maintenance of electric loader, pressure measurement device is used to debug hydraulic system, to ensure that hydraulic pump outlet overflow pressure meets design requirements, to ensure the normal operation of equipment.

[0003] Usually one end of pressure measurement pipeline is screw-mounted in hydraulic pump outlet pipeline, and the other end of pressure measurement pipeline is screw-mounted in corresponding pipeline, and then the pressure of hydraulic oil in hydraulic pump outlet pipeline is measured.

[0004] Then hydraulic pump will produce pressure impact on hydraulic pump outlet pipeline and measurement pipeline during starting or stopping, which can easily cause the connection between measurement pipeline and hydraulic pump outlet pipeline to be loose, and then cause leakage risk.

[0005] Therefore, a kind of hydraulic pump outlet overflow pressure measurement device for electric loader hydraulic system is proposed to solve the above problems. UTILITY MODEL CONTENTS

[0006] The utility model aims at providing hydraulic pump outlet overflow pressure measurement device for electric loader hydraulic system to solve the above problems, and improves the problem that pressure impact is generated on hydraulic pump outlet pipeline and measurement pipeline, which can easily cause the connection between measurement pipeline and hydraulic pump outlet pipeline to be loose.

[0007] The utility model realizes the above-mentioned purposes through the following technical solutions: a kind of hydraulic pump outlet overflow pressure measurement device for electric loader hydraulic system, comprising: outlet pipe and measurement pipe, both ends of the measurement pipe are rotatably connected with connecting pipe, the inner wall of the connecting pipe is screw-connected to the surface of outlet pipe;Anti-leak mechanism, the anti-leak mechanism includes the blocking ring fixedly connected to the surface of outlet pipe, the inner wall of the blocking ring is slidably connected with the iron rod distributed in ring, the surface of the iron rod is fixedly connected with the limiting block, the inner wall of the connecting pipe is slidably connected with the clamping rod distributed in ring, the surface of the clamping rod is clamped to the inner wall of the iron rod, the inner wall of the connecting pipe is slidably connected with rubber frame. Through the cooperation of clamping rod, iron rod and limiting block, the connecting pipe is locked, and the problem of thread loosening of connecting pipe on outlet pipe is avoided, the limiting block is locked by sliding rubber frame into connecting pipe, and then the iron rod is stably clamped in connecting pipe, so as to avoid leakage risk.

[0008] Preferably, the end of the clamping rod is fixedly connected with a spring, and the other end of the spring is fixedly connected to the inner wall of the connecting pipe.

[0009] Preferably, one end of the connecting pipe is fixedly connected with a silica gel ring, and the surface of the silica gel ring is clamped to the inner wall of the blocking ring.

[0010] Preferably, one end of the blocking ring is fixedly connected with annularly distributed magnetic blocks, and the end of the magnetic blocks is magnetically attracted to the end of the iron rod. By clamping the silica gel ring into the blocking ring, the rotational resistance of the connecting pipe on the outlet pipe is increased, and by the magnetic ring being adsorbed on the end of the iron rod, the moving resistance of the iron rod is increased, thereby ensuring that the connecting pipe is tightly connected with the outlet pipe, and avoiding the situation that the connecting pipe and the outlet pipe are loose.

[0011] Preferably, the surface of the iron rod is fixedly connected with a target block.

[0012] Preferably, the surface of the blocking ring is fixedly connected with a sliding rod, and the inner wall of the rubber frame is slidingly connected to the surface of the sliding rod. By limiting the moving rubber frame through the sliding rod, the rubber frame is ensured to be accurately slid into the connecting pipe, thereby accurately abutting against the limiting block.

[0013] Preferably, the end of the clamping rod is fixedly connected with a nylon rope, and the other end of the nylon rope penetrates through the connecting pipe and is fixedly connected with a connecting ring.

[0014] The utility model discloses the beneficial effect is:

[0015] 1. By clamping rod, iron rod and limiting block cooperation, realized to the connecting pipe locking, by the rubber frame sliding into the connecting pipe, limiting block locking, thereby guarantee that the iron rod is stably clamped in the connecting pipe, compared with the existing hydraulic pump outlet pipeline and the determination pipeline easy to occur the situation of loose thread, this mode is through the stable locking of connecting pipe, guarantee that the hydraulic pump outlet pipeline and the determination pipeline are closely connected, thereby avoiding the risk of leakage;

[0016] 2. By clamping the silica gel ring into the blocking ring, the rotational resistance of the connecting pipe on the outlet pipe is increased, and by the magnetic ring being adsorbed on the end of the iron rod, the moving resistance of the iron rod is increased, thereby ensuring that the connecting pipe is tightly connected with the outlet pipe, and avoiding the situation that the connecting pipe and the outlet pipe are loose. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the whole structure schematic view of the utility model;

[0018] Figure 2 It is the connecting pipe sectional view of the utility model;

[0019] Figure 3 It is Figure 2 The enlarged view of A;

[0020] Figure 4 For Figure 2 Enlarged view of B.

[0021] In the figure: 1, outlet pipe; 2, measuring pipe; 3, connecting pipe; 4, leakage prevention mechanism; 41, blocking ring; 42, iron rod; 43, limiting block; 44, clamping rod; 45, spring; 46, rubber bracket; 47, magnetic block; 48, nylon rope; 49, connecting ring; 410, silica gel ring; 411, sliding rod; 412, marker block. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0023] In the specific implementation: as Figures 1-4 shown, a kind of hydraulic pump outlet overflow pressure measuring device for the hydraulic system of electric loader, it include: outlet pipe 1 and measuring pipe 2, the both ends of measuring pipe 2 are rotatably connected with connecting pipe 3, the inner wall of connecting pipe 3 is connected on the surface of outlet pipe 1 by screw thread;Leakage prevention mechanism 4, leakage prevention mechanism 4 includes the blocking ring 41 fixedly connected on the surface of outlet pipe 1, the inner wall of blocking ring 41 is slidably connected with the iron rod 42 distributed in annular, the surface of iron rod 42 is fixedly connected with the limiting block 43, the inner wall of connecting pipe 3 is slidably connected with the clamping rod 44 distributed in annular, the surface of clamping rod 44 is clamped to the inner wall of iron rod 42, the inner wall of connecting pipe 3 is slidably connected with rubber bracket 46.

[0024] One end of outlet pipe 1 is fixedly connected with hydraulic pump, and overflow valve is embedded and installed on the surface of outlet pipe 1.

[0025] The surface of measuring pipe 2 is provided with pressure sensor and display instrument.

[0026] Pressure sensor is one of the core components of measuring device, it can feel pressure signal, and according to certain rule, pressure signal is converted into usable output electric signal. Common pressure sensor has strain gauge type, piezoresistance type etc. The pressure value of hydraulic pump outlet is accurately measured, and it is converted into electric signal, so that subsequent processing and display.

[0027] Display instrument receives electric signal from pressure sensor, and after internal signal processing circuit, electric signal is converted into intuitive pressure value, and is displayed.

[0028] The hydraulic system of an electric loader is generally composed of a hydraulic pump, a hydraulic cylinder, a hydraulic motor, a directional control valve, an overflow valve, an oil tank, oil pipes and joints, a filter, and an accumulator, etc.

[0029] The hydraulic pump converts the mechanical energy of an electric motor into hydraulic energy to provide power for the entire hydraulic system. Common hydraulic pumps include gear pumps, vane pumps, and piston pumps. The electric loader selects an appropriate pump based on the system pressure and flow requirements. The hydraulic cylinder is used to achieve linear motion, such as the arm cylinder controlling the lifting of the loader's arm or the bucket cylinder controlling the turning action of the bucket. The hydraulic motor is mainly used to achieve rotational motion, such as driving the walking mechanism of the loader or other components that require rotation.

[0030] The directional control valve, including a reversing valve, is used to control the flow direction of hydraulic oil, thereby changing the motion direction of the actuator. The overflow valve limits the maximum pressure of the system, serving as a safety protection.

[0031] The oil tank stores hydraulic oil and also serves as a heat sink and a sedimentation of impurities. The oil pipes and joints are used to connect various components in the hydraulic system, allowing hydraulic oil to circulate within the system. The filter filters impurities in the hydraulic oil to ensure its cleanliness and prevent impurities from causing wear and damage to hydraulic components. The accumulator stores and releases hydraulic energy, providing additional flow when needed or absorbing pressure shocks in the system.

[0032] When the hydraulic system of an electric loader is in operation, the hydraulic pump is manually started, which draws oil from the oil tank, pressurizes it, and outputs it to the hydraulic system, such as the hydraulic cylinder, causing one end of the hydraulic cylinder to move, thereby achieving various actions of the loader, such as lifting the arm or turning the bucket. After the hydraulic cylinder completes its work, the hydraulic oil flows back to the oil tank through the return pipe, completing a work cycle.

[0033] When measuring the outlet overflow pressure of the hydraulic pump, turn off the hydraulic pump's oil supply. Screw the connecting pipe 3 on one end of the measuring pipe 2 onto the surface of the outlet pipe 1, and screw the connecting pipe 3 on the other end of the measuring pipe 2 onto the surface of the corresponding pipe. Push the three iron rods 42 into the connecting pipe 3, rotate the three iron rods 42 to make the limiting blocks 43 rotate to the corresponding position in the connecting pipe 3, push the clamping rods 44 down to clamp into the iron rods 42, and push the rubber holder 46 into the connecting pipe 3 so that it touches the side of the limiting block 43. At this time, push the other set of iron rods 42 to lock the connecting pipe 3, making the measuring pipe 2 tightly connected with the outlet pipe 1 and the corresponding pipe.

[0034] At this time, the hydraulic system power is turned on, the hydraulic pump starts to work, and the hydraulic oil circulates in the system. At this time, the initial pressure value on the display instrument is observed to determine whether the system starts normally. Slowly adjust the overflow valve on the outlet pipe 1 to gradually increase the outlet pressure of the hydraulic pump. During the adjustment process, closely observe the pressure change on the display instrument, and pay attention to the running state of the system, such as whether there are abnormal noises, vibrations, etc. When the pressure rises to the set test point or reaches a stable state, read the pressure value on the display instrument and record it down. In order to improve the accuracy of measurement, the pressure value can be read multiple times at each test point, and the average value is taken as the final result. During the entire measurement process, attention should be paid to the fluctuation of the pressure value.

[0035] If the pressure fluctuation is too large, it may indicate that the system has problems, such as hydraulic pump failure, unstable overflow valve, etc., which needs further inspection and processing. According to the predetermined test scheme, the above-mentioned pressure rising and pressure reading operations are repeated under different working conditions such as different loads and speeds. Multiple measurements are made, and the pressure value, measurement time, working condition, and other related information are recorded in detail. After the measurement is completed, the recorded data is sorted and analyzed to determine whether the hydraulic pump outlet overflow pressure meets the design requirements or relevant standards.

[0036] As shown in Figure 3 The end of the clamping rod 44 is fixedly connected with a spring 45, the other end of the spring 45 is fixedly connected to the inner wall of the connecting pipe 3, one end of the connecting pipe 3 is fixedly connected with a silica gel ring 410, the surface of the silica gel ring 410 is clamped to the inner wall of the stop ring 41, one end of the stop ring 41 is fixedly connected with a ring-distributed magnetic block 47, the end of the magnetic block 47 is magnetically attracted to the end of the iron rod 42, and the surface of the iron rod 42 is fixedly connected with a mark block 412.

[0037] The connecting pipe 3 is threadedly installed on the surface of the outlet pipe 1, so that the silica gel ring 410 is clamped into the stop ring 41, the iron rod 42 is rotated to drive the mark block 412 to rotate and abut against the side surface of the magnetic block 47, the rotation of the iron rod 42 is stopped, and the magnetic block 47 magnetically attracts the end of the iron rod 42.

[0038] As shown in Figure 4 The surface of the stop ring 41 is fixedly connected with a sliding rod 411, and the inner wall of the rubber frame 46 is slidingly connected to the surface of the sliding rod 411.

[0039] As shown in Figure 3 The end of the clamping rod 44 is fixedly connected with a nylon rope 48, the other end of the nylon rope 48 penetrates through the connecting pipe 3 and is fixedly connected with a connecting ring 49.

[0040] The utility model discloses a measuring pipe 2 one end on the connecting pipe 3 of screw thread installation is installed on the surface of outlet pipe 1, and the connecting pipe 3 of screw thread installation is installed on the surface of corresponding pipeline on the other end of measuring pipe 2, makes silica gel ring 410 joint to the blocking ring 41, pushes three iron pole 42, makes iron pole 42 slide into connecting pipe 3, makes magnetic block 47 magnetic attraction iron pole 42 end, rotates three iron pole 42, makes the restriction block 43 rotate corresponding position in connecting pipe 3, and iron pole 42 rotation drives the rotation of the mark block 412 and touches on the side of magnetic block 47, stops rotating iron pole 42, loosens the connection ring 49, and the elastic force of spring 45 pushes the clamping rod 44 joint to iron pole 42, and pushes the rubber frame 46 and slides into connecting pipe 3, and makes rubber frame 46 touch on the side of restriction block 43, at this time, pushes another group of iron pole 42, and then carries out locking to connecting pipe 3, makes measuring pipe 2 be connected closely with outlet pipe 1 respectively, corresponding pipeline.

[0041] Need to explain, the above-mentioned outlet pipe 1, measuring pipe 2, connecting pipe 3, magnetic block 47, iron pole 42, overflow valve, pressure sensor and display instrument etc. are all for the more mature device of prior art application, and the specific model can be selected according to actual needs, and overflow valve, pressure sensor and display instrument power supply can be built-in power supply, can also be mains power supply, and the specific power supply mode is selected according to the situation, and here is not repeated.

[0042] In addition, it should be understood that, although the present specification is described according to the embodiment, not every embodiment only contains an independent technical scheme, and the description mode of the specification is only for the sake of clarity, and the skilled person in the art should take the specification as a whole, and the technical scheme in each embodiment can also be combined appropriately, forming other embodiments that the skilled person can understand.

Claims

1. A hydraulic pump outlet relief pressure measuring device for an electric drive loader hydraulic system, characterized by, Include: The outlet pipe (1) and the determination pipe (2), the both ends of the determination pipe (2) are rotatably connected with the connecting pipe (3), the inner wall of the connecting pipe (3) is threadedly connected to the surface of the outlet pipe (1); The anti-leakage mechanism (4) includes the blocking ring (41) fixedly connected to the surface of the outlet pipe (1), the inner wall of the blocking ring (41) is slidably connected with the iron rod (42) distributed in a ring, the surface of the iron rod (42) is fixedly connected with the limiting block (43), the inner wall of the connecting pipe (3) is slidably connected with the clamping rod (44) distributed in a ring, the surface of the clamping rod (44) is clamped to the inner wall of the iron rod (42), the inner wall of the connecting pipe (3) is slidably connected with the rubber frame (46).

2. A hydraulic pump outlet relief pressure measuring device for a hydraulic system of an electric drive loader as set forth in claim 1, characterized in that: The end of the clamping rod (44) is fixedly connected with the spring (45), the other end of the spring (45) is fixedly connected to the inner wall of the connecting pipe (3).

3. A hydraulic pump outlet relief pressure measuring device for a hydraulic system of an electric drive loader as set forth in claim 1, characterized in that: One end of the connecting pipe (3) is fixedly connected with the silica gel ring (410), the surface of the silica gel ring (410) is clamped to the inner wall of the blocking ring (41).

4. A hydraulic pump outlet relief pressure measuring device for a hydraulic system of an electric drive loader as set forth in claim 1, characterized in that: One end of the blocking ring (41) is fixedly connected with the magnetic block (47) distributed in a ring, the end of the magnetic block (47) is magnetically attracted to the end of the iron rod (42).

5. A hydraulic pump outlet relief pressure measuring device for a hydraulic system of an electrically driven loader as set forth in claim 1, characterized in that: The surface of the iron rod (42) is fixedly connected with the mark block (412).

6. A hydraulic pump outlet relief pressure measuring device for a hydraulic system of an electrically driven loader as set forth in claim 1, characterized in that: The surface of the blocking ring (41) is fixedly connected with the sliding rod (411), the inner wall of the rubber frame (46) is slidably connected to the surface of the sliding rod (411).

7. A hydraulic pump outlet relief pressure measuring device for a hydraulic system of an electrically driven loader as set forth in claim 1, characterized in that: The end of the clamping rod (44) is fixedly connected with the nylon rope (48), the other end of the nylon rope (48) penetrates through the connecting pipe (3) and is fixedly connected with the connecting ring (49).

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