Engineering machinery fluid temperature monitoring device

Abstract

The invention discloses an engineering machinery fluid temperature monitoring device, and relates to the technical field of temperature monitoring, the engineering machinery fluid temperature monitoring device comprises a connecting pipe, one end of the connecting pipe is fixedly connected with a hexagonal insertion block, one end, far away from the connecting pipe, of the hexagonal insertion block is provided with a temperature monitoring mechanism, and the outer side of the temperature monitoring mechanism is provided with a shell port; the temperature monitoring mechanism comprises a slot, the slot is formed in the side face of the hexagonal insertion block, an electric shock piece is arranged on the inner side of the slot, one end of the electric shock piece is fixedly connected with a power supply end shell, a supporting frame is fixedly connected to the inner wall of the hexagonal insertion block, and a temperature sensor is fixedly connected to the center of the supporting frame. According to the power supply end shell, through elastic compression and expansion of the cavity sealing ring, smoothness in the installation process and tight sealing after connection are achieved, liquid leakage is effectively prevented, and oxidation is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of temperature monitoring, in particular to an engineering machinery fluid temperature monitoring device. BACKGROUND

[0002] In the field of engineering machinery, it is crucial to monitor the temperature of key fluids such as hydraulic oil in real time. Traditional temperature measuring devices often have problems such as complicated installation, insufficient sealing reliability, fixed measuring points that cannot penetrate the core area of the fluid, and temperature lag caused by fluid stagnation. Therefore, we designed an engineering machinery fluid temperature monitoring device that integrates fast plug-in locking, dynamic sealing, releasable internal temperature measuring unit, and active circulation sampling function.

[0003] Patent No. CN118817112B discloses an engineering machinery fluid temperature monitoring device, which relates to the technical field of fluid temperature monitoring, comprising: a monitoring shell, a rotating groove with a rectangular slot structure is formed on the rear end face of the monitoring shell; a rotating block is arranged inside the rotating groove, a reciprocating receiving groove is formed on the rear side center of the outer circumferential surface of the rotating block, and a plug-in slider is inserted into the reciprocating receiving groove; a temperature sensor is fixedly installed on the rear end face of the plug-in slider. The patent realizes real-time monitoring of the fluid temperature in the oil tank through the temperature sensing end of the temperature sensor in contact with the outer surface of the oil tank. After the electric heating sheet is started, the heat generated by the electric heating sheet interferes with the temperature sensor, thereby realizing sound and light alarm. Based on the sound and light alarm in the specific time period, it is convenient for the staff to determine whether the current temperature sensor and sound and light alarm are in normal operating state, solving the problem that the temperature monitoring equipment for monitoring the fluid temperature in the oil tank cannot realize self-detection and determination. However, the patent still has the problem that the sealing ring is easy to be oxidized by air, affecting the sealing and temperature detection accuracy. SUMMARY

[0004] In view of the deficiencies of the prior art, the present application provides an engineering machinery fluid temperature monitoring device to solve the problems raised in the background art.

[0005] To achieve the above purpose, the present application realizes the following technical scheme: an engineering machinery fluid temperature monitoring device, comprising a connecting pipe, one end of the connecting pipe is fixedly connected with a hexagonal plug, the hexagonal plug away from the connecting pipe is provided with a temperature monitoring mechanism, the outer side of the temperature monitoring mechanism is provided with a shell port. The temperature monitoring mechanism comprises a slot, which is arranged on the side of the hexagonal plug block, an electric contact piece is arranged on the inner side of the slot, one end of the electric contact piece is fixedly connected with a power supply end shell, a support frame is fixedly connected with the inner wall of the hexagonal plug block, a temperature sensor is fixedly connected with the center of the support frame, an inner cylinder is fixedly connected with the side of the hexagonal plug block away from the connecting pipe, an elastic contact ring is slidably connected with the outer wall of the power supply end shell, a cavity sealing ring is fixedly connected with the side of the elastic contact ring, a threaded groove is arranged on the outer wall of the end of the inner cylinder away from the hexagonal plug block, a fitting ring is threadedly connected with the outer side of the threaded groove, a protrusion is outwardly extended from the outer wall of the fitting ring, a recess is arranged on the inner wall of the shell port, and an arc-shaped groove and a separation groove are respectively arranged on the rear side of the inner cylinder.

[0006] According to the above technical scheme, the outer wall of the hexagonal plug block is fixedly connected with a guide piece, the rear side of the temperature monitoring mechanism is provided with a fluid monitoring mechanism, and the front end of the connecting pipe is provided with a plug-in locking mechanism.

[0007] According to the technical scheme, the power supply end shell is fixedly connected with the slot, the temperature sensor is fixedly connected with the power supply end shell, the outer surface of the elastic contact ring is provided with annular equidistantly distributed segmentation grooves, the arc-shaped groove and the disengagement groove are connected in communication, and the recess and the protrusion are in sliding connection; during installation, the inner cylinder connected with the hexagonal plug is inserted into the shell port of the mechanical side, the cavity seal ring and the elastic contact ring on the outer side of the inner cylinder are extruded to be close to the outer wall of the inner cylinder when passing through the ring port of the shell port, so that the outer diameter size of the cavity seal ring and the elastic contact ring is reduced, the cavity seal ring and the elastic contact ring are smoothly put into the shell port after being compressed, then the hexagonal plug is rotated to drive the inner cylinder and the fitting ring on the outer side of the thread groove to move together, when the protrusion on the fitting ring is completely aligned with the recess provided in the shell port, the hexagonal plug drives the fitting ring connected with the inner cylinder to drive the protrusion to slide along the inner side of the recess, so that the inner cylinder is completely put into the shell port, then the hexagonal plug and the inner cylinder are rotated, the protrusion connected with the fitting ring is blocked by the recess, at this time, the fitting ring is relatively rotated with the inner cylinder under the action of the outer thread groove of the inner cylinder, and the fitting ring gradually approaches the hexagonal plug along the recess, the fitting ring moves to extrude the cavity seal ring by extruding the elastic contact ring, so that the cavity seal ring is touched by the reverse force and expanded to be close to the inner side of the shell port and the inner cylinder, the cavity seal ring is expanded to be close to the inner side of the shell port and the inner cylinder, and the gap between the inner side of the shell port and the inner cylinder is filled, and the relative position of the shell port and the inner cylinder is fixed by the expansion of the cavity seal ring, the cavity seal ring is sealed in the inner side to reduce oxidation and improve the service life of the sealing element, and when the liquid passes through the connecting pipe and enters the inner part of the hexagonal plug, the current passes through the electric contact piece in the slot to supply power to the temperature sensor connected with the power supply end shell, so that the liquid passing through the temperature sensor changes the resistance in the temperature sensor by temperature transmission, and the temperature of the liquid passing through the temperature sensor is measured by the function change between the resistance and the temperature, and the temperature of the fluid entering the mechanical interior is detected in real time.

[0008] According to the technical scheme, the fluid monitoring mechanism includes a clamping strip, the clamping strip is clamped and connected on the inner side of the arc-shaped groove, the rear side of the clamping strip is fixedly connected with an inner shaft tube, the front end outer wall of the inner shaft tube is fixedly connected with an outer ring, the upper and lower sides of the outer ring are hingedly connected with a stop block, the side surface of each stop block is provided with a convex strip, the inner wall of the inner shaft tube is fixedly connected with a spiral piece, the shaft center of the spiral piece is fixedly connected with a temperature sensor, the front end of the spiral piece is fixedly connected with a liquid pumping end, the front side of the liquid pumping end is fixedly connected with a partition plate, the inner wall of the liquid pumping end is fixedly connected with a guide block, the inner wall of the guide block is slidingly connected with a composite elastic piece, the rear side of the liquid pumping end is fixedly connected with an input pipe, the inside of the liquid pumping end is provided with a bottom chamber, one end of the input pipe is provided with a one-way piece, the side surface of the liquid pumping end is provided with a flow limiting piece, the edges of the flow limiting piece and the one-way piece both extend outwardly to an elastic piece, the middle part of the front side of the guide block is fixedly connected with an alloy column, and the rear side of the inner shaft tube is fixedly connected with a discharge port.

[0009] According to the above technical scheme, the convex strip is fixedly connected with the outer ring, the input pipe is in communication with the inside of the liquid end, the input pipe is fixedly connected with the spiral piece, the side surface of the liquid end is provided with a communication opening corresponding to the flow limiting piece, the elastic piece of the side surface of the flow limiting piece and the one-way piece is fixedly connected with the liquid end, the liquid end is in communication with the inside of the spiral piece, the alloy column is in contact with the composite elastic piece, the alloy column is made of nickel-titanium alloy material, the composite elastic piece is composed of a copper piece and an iron piece, the discharge port is in communication with the inside of the spiral piece, when the convex block connected with the fitting ring is located in the groove, in the process of rotating the hexagonal plug block to drive the inner cylinder to move, the inner cylinder is clamped to the clamping strip through the arc-shaped groove and the disengaging groove, the inner shaft pipe which should rotate together is blocked by the groove through the blocking block of the outer ring damping hinge, so that the inner cylinder rotates relative to the inner shaft pipe, the clamping strip clamped to the inside of the arc-shaped groove moves to the disengaging groove through the rotation of the inner cylinder to drive the arc-shaped groove and the disengaging groove to move, and the clamping strip is disconnected with the inner cylinder through the disengaging groove, the inner shaft pipe disconnected with the inner cylinder enters the mechanical fluid inside, and the temperature sensor inside the inner shaft pipe further measures the internal temperature of the mechanical fluid, at the same time, when the power supply end shell is in the power-on state, the temperature sensor and the alloy column are powered on through the guide connected with the power supply end shell, so that the temperature sensor and the alloy column are in working state, the alloy column is made of nickel-titanium alloy material, and will quickly heat up after being powered on. The alloy column after heating transmits heat to the composite elastic piece in contact, since the contact side of the composite elastic piece is made of iron material and the other side is made of copper material, the expansion coefficient of copper after being heated is greater than that of iron, so that the composite elastic piece is bent, the bent composite elastic piece is bent to the bottom chamber under the sliding guidance of the guide block and drives the liquid, the internal liquid pressure is increased through extruding the bottom chamber to open the flow limiting piece, the flow limiting piece is reset under the action of the extended elastic piece on the side of the reset flow limiting piece after the pressure is reduced, and the composite elastic piece is disconnected with the alloy column after being bent, the composite elastic piece is reset without being heated, so that the space of the bottom chamber is increased, the liquid enters the bottom chamber through the input pipe to open the one-way piece, the pressure is balanced with the atmospheric pressure, and the liquid passing through the flow limiting piece enters the spiral piece and is discharged from the discharge port, when the liquid in the spiral piece contacts the temperature sensor, the temperature of the mechanical fluid is measured, and the mechanical fluid continuously flows to reduce the temperature difference.

[0010] According to the above technical scheme, the plug-in locking mechanism comprises a docking port, an annular groove is formed in the outer wall of the docking port, an outer sliding ring is slidably connected to the outer side of the connecting pipe, a spring ring is fixedly connected to the inner wall of the outer sliding ring, two pivot joints are fixedly connected to the rear side of the outer sliding ring, a top block is hingedly connected between the two outer sliding rings, a positioning strip is fixedly connected to the rear side surface of the top block, a ball is slidably connected to the outer wall of the connecting pipe, four lock rods are fixedly connected to the outer wall of the outer sliding ring, and a lock groove is formed in the front side of the shell port.

[0011] According to the technical scheme, the side surface of the spring ring is provided with a reset spring, and the two ends of the reset spring are fixedly connected with the spring ring and the outer sliding ring respectively, the front side surface of the hexagonal plug is provided with a recess, and the recess is insertedly connected with the alignment strip, and the ball is located between the connecting pipe and the outer sliding ring.

[0012] According to the technical scheme, the inner wall of the outer sliding ring is provided with a slope, the outer sliding ring is in contact with the ball through the slope, the lock rod is slidably connected with the guide piece, the lock rod and the lock groove form a clamping structure, the lock groove is provided with a plurality of lock grooves, and the structure of each lock groove and the corresponding lock rod is matched with each other, the hexagonal plug is installed, the docking port connected with the external liquid supply pipeline is docked with the connecting pipe, the outer sliding ring is pulled along the outer wall of the connecting pipe by hand, the outer sliding ring pulls the reset spring through the spring ring at this time, the top block is turned over at this time, the alignment strip connected with the top block is correspondingly matched with the recess on the side surface of the hexagonal plug, the top block is pressed against the hexagonal plug to prevent the reset spring from resetting, the tool is sleeved outside the hexagonal plug to assist installation, after installation, the docking port is inserted into the connecting pipe, the outer sliding ring is pulled again, the top block is turned over and no longer presses against the side surface of the hexagonal plug, the reciprocating spring pulls the outer sliding ring to reset and extrudes the ball through the inner wall slope to make the ball stretch out from the inner wall of the connecting pipe to the ring groove of the docking port to realize fixation, at the same time, the reset outer sliding ring pushes the connected lock rod and guide piece to slide and then inserts into the lock groove on the front side of the shell port, preventing the installed hexagonal plug from loosening due to mechanical vibration.

[0013] The application provides an engineering machinery fluid temperature monitoring device. The application has the advantages that the temperature monitoring mechanism is arranged, elastic compression and expansion of the cavity sealing ring realize smooth installation and tight sealing after connection, liquid leakage is effectively prevented and oxidation is reduced, the durability of the sealing element is improved, the real-time monitoring function of the temperature sensor is combined, the temperature can be accurately detected when fluid enters the machinery, important parameter basis is provided for system operation, the overall structure has reliable sealing performance and practical fluid monitoring capability; The application has the advantages that the fluid monitoring mechanism is arranged, relative rotation of the inner cylinder and the inner shaft pipe and cooperation of the arc-shaped groove and the disengagement groove realize automatic release and deepening of the inner shaft pipe, the inner shaft pipe can enter the inside of the mechanical fluid to measure the temperature of a more core area, the alloy column is electrified to heat and trigger the bimetallic effect of the composite spring piece, periodic pumping action of the bottom chamber is driven, the fluid in the machinery flows through the spiral piece and contacts the temperature sensor, accurate monitoring of the fluid temperature is realized, the temperature gradient in the fluid is effectively reduced through forced circulation, the representativeness of temperature measurement and the uniformity of system thermal management are ensured; The present application, by being provided with the plug-in locking mechanism, provides temporary locking function for the installation of the hexagonal plug-in block through the cooperation of the sliding of the outer sliding ring and the overturning of the top block, facilitates the auxiliary operation by using tools, improves the convenience and stability of the installation, after the insertion of the butt joint port, the resetting action of the outer sliding ring can synchronously drive the ball to be clamped into the ring groove to realize the quick and reliable connection locking, and at the same time, the locking rod is pushed into the locking groove to form the double anti-loosening mechanism, effectively resists the mechanical vibration, and ensures the durable stability and safety of the connection of the hexagonal plug-in block and the butt joint port. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a whole positive stereoscopic structure schematic view of the present application; Figure 2 It is a whole mechanism position distribution structure schematic view of the present application; Figure 3 It is a whole temperature monitoring mechanism structure schematic view of the present application; Figure 4 It is a whole Figure 3 It is an enlarged structure schematic view of A in the present application; Figure 5 It is a whole shell port structure schematic view of the present application; Figure 6 It is a whole Figure 5 It is an enlarged structure schematic view of B in the present application; Figure 7 It is a whole fluid monitoring mechanism structure schematic view of the present application; Figure 8 It is a whole liquid drum end internal structure schematic view of the present application; Figure 9 It is a whole Figure 8 It is an enlarged structure schematic view of C in the present application; Figure 10 It is a whole flow limiting sheet connecting structure schematic view of the present application; Figure 11 It is a whole plug-in locking mechanism structure schematic view of the present application; Figure 12 It is a whole Figure 11 It is an enlarged structure schematic view of D in the present application.

[0015] In the figure: 1, connecting pipe; 2, hexagonal plug; 3, guide piece; 4, shell port; 5, temperature monitoring mechanism; 51, slot; 52, electric contact piece; 53, power supply end shell; 54, support frame; 55, inner cylinder; 56, temperature sensor; 57, elastic contact ring; 58, cavity sealing ring; 59, threaded groove; 510, fitting ring; 511, protrusion; 512, groove; 513, arc-shaped groove; 514, disengagement groove; 6, fluid monitoring mechanism; 61, clamping strip; 62, outer ring; 63, inner shaft tube; 64, stop block; 65, protrusion; 66, temperature sensor; 67, spiral piece; 68, liquid pumping end; 69, input pipe; 610, partition plate; 611, guide block; 612, composite elastic piece; 613, alloy column; 614, one-way piece; 615, elastic piece; 616, bottom chamber; 617, flow limiting piece; 618, discharge port; 7, plug-in locking mechanism; 71, butt joint port; 72, ring groove; 73, ball; 74, spring ring; 75, outer sliding ring; 76, rotating shaft section; 77, top block; 78, alignment strip; 79, lock rod; 710, lock groove. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all.

[0017] Please refer to Figures 1-12 The embodiment of the present application is: an engineering machinery fluid temperature monitoring device, comprising a connecting pipe 1, one end of the connecting pipe 1 is fixedly connected with a hexagonal plug 2, the end of the hexagonal plug 2 away from the connecting pipe 1 is provided with a temperature monitoring mechanism 5, and the outer side of the temperature monitoring mechanism 5 is provided with a shell port 4. The temperature monitoring mechanism 5 comprises a slot 51, the slot 51 is formed in the side surface of the hexagonal plug 2, the inner side of the slot 51 is provided with an electric contact piece 52, one end of the electric contact piece 52 is fixedly connected with a power supply end shell 53, the inner wall of the hexagonal plug 2 is fixedly connected with a support frame 54, the center of the support frame 54 is fixedly connected with a temperature sensor 56, the side of the hexagonal plug 2 away from the connecting pipe 1 is fixedly connected with an inner cylinder 55, the outer wall of the power supply end shell 53 is slidably connected with an elastic contact ring 57, the side surface of the elastic contact ring 57 is fixedly connected with a cavity sealing ring 58, the outer wall of the end of the inner cylinder 55 away from the hexagonal plug 2 is provided with a threaded groove 59, the outer side of the threaded groove 59 is threadedly connected with a fitting ring 510, the outer wall of the fitting ring 510 extends outwardly to form a protrusion 511, the inner wall of the shell port 4 is provided with a groove 512, and the rear side of the inner cylinder 55 is respectively provided with an arc-shaped groove 513 and a disengagement groove 514.

[0018] The outer wall of the hexagonal plug 2 is fixedly connected with a guide piece 3, the rear side of the temperature monitoring mechanism 5 is provided with a fluid monitoring mechanism 6, and the front end of the connecting pipe 1 is provided with a plug-in locking mechanism 7.

[0019] The power supply end shell 53 is fixedly connected with the slot 51, the temperature sensor 56 is fixedly connected with the power supply end shell 53, the outer surface of the elastic contact ring 57 is provided with annularly equidistantly distributed segmentation grooves, the arc-shaped groove 513 and the disengagement groove 514 are communicated, and the recess 512 is slidably connected with the protrusion 511. During installation, the inner cylinder 55 connected with the hexagonal plug block 2 is inserted into the shell port 4 on the mechanical side, in the process of placing the inner cylinder 55 into the shell port 4, the cavity sealing ring 58 and the elastic contact ring 57 on the outer side of the inner cylinder 55 are extruded to be close to the outer wall of the inner cylinder 55 when passing through the inner ring of the shell port 4, so that the outer diameter size of the cavity sealing ring 58 and the elastic contact ring 57 is reduced, and the cavity sealing ring 58 and the elastic contact ring 57 are smoothly put into the shell port 4 after being compressed. Then the hexagonal plug block 2 is rotated to drive the fitting ring 510 on the outer side of the screw groove 59 of the inner cylinder 55 to move together, when the protrusion 511 on the fitting ring 510 is completely aligned with the recess 512 provided in the shell port 4, at this time the hexagonal plug block 2 drives the fitting ring 510 connected with the inner cylinder 55 to drive the protrusion 511 to slide along the inner side of the recess 512, so that the inner cylinder 55 is completely placed into the shell port 4. Then the hexagonal plug block 2 is rotated with the inner cylinder 55, the protrusion 511 connected with the fitting ring 510 is blocked by the recess 512, at this time the fitting ring 510 is relatively rotated with the inner cylinder 55 under the action of the outer screw groove 59 of the inner cylinder 55, and the fitting ring 510 gradually approaches the hexagonal plug block 2 along the recess 512. The movement of the fitting ring 510 pushes the cavity sealing ring 58 by extruding the elastic contact ring 57, so that the cavity sealing ring 58 is touched by the reverse force and expanded when the cavity sealing ring 58 touches the inner side of the shell port 4 and the inner cylinder 55, and the cavity sealing ring 58 is expanded to fit and fill the gap between the inner side of the shell port 4 and the inner cylinder 55, and the relative position of the shell port 4 and the inner cylinder 55 is fixed by the expansion of the cavity sealing ring 58. The cavity sealing ring 58 is sealed in the inside to reduce oxidation and improve the service life of the sealing element. When the liquid passes through the connecting pipe 1 and enters the inside of the hexagonal plug block 2, the current passes through the electric contact piece 52 in the slot 51 to supply power to the temperature sensor 56 connected with the power supply end shell 53, so that the liquid passing through the temperature sensor 56 changes the resistance in the temperature sensor 56 by temperature transfer, and the temperature of the liquid passing through the temperature sensor 56 is measured by the function change between resistance and temperature. The temperature of the fluid entering the inside of the machine is detected in real time, the elastic compression and expansion of the cavity sealing ring 58 realize smooth installation process and tight sealing after connection, effectively prevent liquid leakage and reduce oxidation, improve the durability of the sealing element, and the real-time monitoring function of the temperature sensor 56 can accurately detect the temperature when the fluid enters the machine, providing an important parameter basis for system operation. The overall structure takes into account the reliable sealing performance and practical fluid monitoring ability.

[0020] The fluid monitoring mechanism 6 comprises a clamping strip 61 clamped and connected to the inner side of the arc-shaped groove 513, the rear side of the clamping strip 61 is fixedly connected with an inner shaft tube 63, the front end outer wall of the inner shaft tube 63 is fixedly connected with an outer ring 62, the upper and lower sides of the outer ring 62 are hingedly connected with a stop block 64, the side surface of each stop block 64 is provided with a convex strip 65, the inner wall of the inner shaft tube 63 is fixedly connected with a helical blade 67, the shaft center of the helical blade 67 is fixedly connected with a temperature sensor 66, the front end of the helical blade 67 is fixedly connected with a liquid pumping end 68, the front side of the liquid pumping end 68 is fixedly connected with a partition plate 610, the inner wall of the liquid pumping end 68 is fixedly connected with a guide block 611, the inner wall of the guide block 611 is slidingly connected with a composite elastic sheet 612, the rear side of the liquid pumping end 68 is fixedly connected with an input pipe 69, the inside of the liquid pumping end 68 is provided with a bottom chamber 616, one end of the input pipe 69 is provided with a one-way sheet 614, the side surface of the liquid pumping end 68 is provided with a flow limiting sheet 617, the edges of the flow limiting sheet 617 and the one-way sheet 614 both extend outwardly to form elastic sheets 615, the front side middle part of the guide block 611 is fixedly connected with an alloy column 613, and the rear side of the inner shaft tube 63 is fixedly connected with a discharge port 618.

[0021] The convex strip 65 is fixedly connected with the outer ring 62, the input pipe 69 is connected with the inside of the liquid drum end 68, the input pipe 69 is fixedly connected with the spiral piece 67, the side surface of the liquid drum end 68 is provided with a communication port corresponding to the flow limiting piece 617, the elastic piece 615 on the side surface of the flow limiting piece 617 and the one-way piece 614 is fixedly connected with the liquid drum end 68, the liquid drum end 68 is connected with the inside of the spiral piece 67, the alloy column 613 is in contact with the composite elastic piece 612, the alloy column 613 is made of nickel-titanium alloy, the composite elastic piece 612 is composed of copper and iron, the discharge port 618 is connected with the inside of the spiral piece 67, when the convex block 511 connected with the engaging ring 510 is located in the groove 512, the inner cylinder 55 is clamped by the arc-shaped groove 513 and the disengaging groove 514 during the movement of the inner cylinder 55 driven by the rotating hexagonal plug 2, the inner shaft pipe 63 which should rotate together is blocked by the recess 512 through the damping hinge block 64 connected with the outer ring 62, so that the inner cylinder 55 rotates relative to the inner shaft pipe 63, the clamping of the arc-shaped groove 513 and the disengaging groove 514 is driven by the rotation of the inner cylinder 55, so that the clamping piece 61 clamped in the arc-shaped groove 513 moves to the disengaging groove 514 and is disconnected with the inner cylinder 55 through the disengaging groove 514, the inner shaft pipe 63 disconnected with the inner cylinder 55 enters the mechanical fluid, the temperature sensor 66 in the inner shaft pipe 63 further measures the internal temperature of the mechanical fluid, at the same time, when the power supply end shell 53 is in the power-on state, the temperature sensor 66 and the alloy column 613 are powered on through the power supply end shell 53 connected with the guide, so that the temperature sensor 66 and the alloy column 613 are in the working state, the alloy column 613 is made of nickel-titanium alloy and will quickly heat up after being powered on, the alloy column 613 after heating transmits heat to the composite elastic piece 612 in contact, since the contact side of the composite elastic piece 612 is made of iron and the other side is made of copper, the expansion coefficient of copper after being heated is greater than that of iron, so that the composite elastic piece 612 is bent, the composite elastic piece 612 after being bent is bent to the bottom chamber 616 under the sliding guidance of the guide block 611 and drives the liquid, the internal liquid is pressed to increase the pressure and open the flow limiting piece 617 through the extrusion of the bottom chamber 616, the flow limiting piece 617 is reset under the action of the extension elastic piece 615 on the side surface after the pressure decreases, the composite elastic piece 612 after being bent is disconnected with the alloy column 613, the composite elastic piece 612 is reset without being heated, so that the space of the bottom chamber 616 is increased, the liquid enters the bottom chamber 616 through the input pipe 69 to balance the pressure with the atmospheric pressure, and the liquid passing through the flow limiting piece 617 enters the spiral piece 67 and is discharged from the discharge port 618, when the liquid in the spiral piece 67 contacts the temperature sensor 66, the temperature of the mechanical fluid is measured and the mechanical fluid continuously flows to reduce the temperature difference, through the relative rotation of the inner cylinder 55 and the inner shaft pipe 63 and the cooperation of the arc-shaped groove 513 and the disengaging groove 514, the automatic release and deepening of the inner shaft pipe 63 are realized, so that the inner shaft pipe 63 can enter the mechanical fluid to measure the temperature of the more core area, at the same time, the alloy column 613 is powered on to heat and trigger the bimetallic effect of the composite elastic piece 612,The driving bottom chamber 616 generates a periodic pumping action, which causes the mechanical fluid to flow through the spiral piece 67 and contact the temperature sensor 66, not only achieving accurate monitoring of the fluid temperature, but also effectively reducing the temperature gradient inside the fluid through forced circulation, ensuring the representativeness of temperature measurement and the uniformity of system thermal management.

[0022] The plug locking mechanism 7 comprises a docking port 71, an annular groove 72 is formed in the outer wall of the docking port 71, an outer sliding ring 75 is slidably connected to the outer side of the connecting pipe 1, a spring ring 74 is fixedly connected to the inner wall of the outer sliding ring 75, two rotating shaft joints 76 are fixedly connected to the rear side of the outer sliding ring 75, a top block 77 is hingedly connected between the two outer sliding rings 75, a positioning strip 78 is fixedly connected to the rear side of the top block 77, a ball 73 is slidably connected to the outer wall of the connecting pipe 1, and four lock rods 79 are fixedly connected to the outer wall of the outer sliding ring 75. A lock groove 710 is formed in the front side of the shell port 4.

[0023] The side surface of the spring ring 74 is provided with a reset spring, the two ends of the reset spring are fixedly connected with the spring ring 74 and the outer sliding ring 75 respectively, a recess is formed in the front side of the hexagonal plug 2, and the recess is plug-connected with the positioning strip 78, and the ball 73 is located between the connecting pipe 1 and the outer sliding ring 75.

[0024] The inner wall of the outer sliding ring 75 is provided with a slope, and the outer sliding ring 75 is in contact with the ball 73 through the slope, the lock rod 79 is in sliding connection with the guide piece 3, the lock rod 79 and the lock slot 710 form a clamping structure, the lock slot is provided with a plurality of lock slots, and each lock slot and the corresponding lock rod structure are matched with each other, the hexagonal insert block 2 is installed, the docking port 71 connected with the external liquid supply pipeline needs to be connected with the connecting pipe 1, the outer sliding ring 75 is pulled by hand to slide along the outer wall of the connecting pipe 1, at this time the outer sliding ring 75 pulls the reset spring through the spring ring 74, at this time the turnover top block 77 is turned over, the alignment strip 78 connected with the turnover top block 77 is used to correspond to the side surface recess of the hexagonal insert block 2, so that the turnover top block 77 stops the hexagonal insert block 2 and prevents the reset spring from resetting, which is convenient for the tool to be sleeved outside the hexagonal insert block 2 to assist installation, after installation, the docking port 71 is inserted into the connecting pipe 1, at this time the outer sliding ring 75 is pulled again, so that the turnover top block 77 is turned over and no longer abuts against the side surface of the hexagonal insert block 2, so that the reciprocating spring pulls the outer sliding ring 75 to reset and extrudes the ball 73 through the inner wall slope to stretch out from the inner wall of the connecting pipe 1 to the ring groove 72 of the docking port 71 to realize fixation, at the same time, the reset outer sliding ring 75 pushes the connected lock rod 79 to slide and then inserts into the lock slot 710 in front of the shell port 4 of the guide piece 3, preventing the installed hexagonal insert block 2 from loosening due to mechanical vibration, through the sliding of the outer sliding ring 75 and the turning over of the turnover top block 77, a temporary locking function is provided for the installation of the hexagonal insert block 2, which is convenient for auxiliary operation by using tools, improves the convenience and stability of installation, after the docking port 71 is inserted, the reset action of the outer sliding ring 75 can drive the ball 73 to be clamped into the ring groove 72 to realize quick and reliable connection locking, and at the same time, the lock rod 79 is inserted into the lock slot 710, forming a double anti-loosening mechanism, effectively resisting mechanical vibration, ensuring the durability, stability and safety of the connection between the hexagonal insert block 2 and the docking port 71.

[0025] Working principle: when installing, insert the inner cylinder 55 connected with the hexagonal plug 2 into the shell port 4 on the mechanical side, during the process of putting the inner cylinder 55 into the shell port 4, the cavity sealing ring 58 and the elastic contact ring 57 on the outer side of the inner cylinder 55 will be extruded close to the outer wall of the inner cylinder 55 when passing the inner ring of the shell port 4, so as to reduce the outer diameter size of the cavity sealing ring 58 and the elastic contact ring 57, so that the cavity sealing ring 58 and the elastic contact ring 57 are compressed and smoothly enter the shell port 4, then rotate the hexagonal plug 2 to drive the matching ring 510 on the outer side of the inner cylinder 55 and the threaded groove 59 to move together, when the protrusion 511 on the matching ring 510 is completely aligned with the groove 512 opened in the shell port 4, at this time the hexagonal plug 2 makes the matching ring 510 connected with the inner cylinder 55 drive the protrusion 511 to slide along the inner side of the groove 512, so that the inner cylinder 55 is completely put into the shell port 4, then rotate the hexagonal plug 2 and the inner cylinder 55, the protrusion 511 connected with the matching ring 510 is blocked by the groove 512, at this time the matching ring 510 rotates relative to the inner cylinder 55 under the action of the outer threaded groove 59 of the inner cylinder 55, and makes the matching ring 510 gradually close to the hexagonal plug 2 along the groove 512, the movement of the matching ring 510 pushes the cavity sealing ring 58 by extruding the elastic contact ring 57, so that the cavity sealing ring 58 touches the inner side of the shell port 4 and the inner cylinder 55 and receives a reverse force and expands the internal cavity to fit, through the expansion and fitting of the cavity sealing ring 58 and the filling of the gap between the inner side of the shell port 4 and the inner cylinder 55, and through the expansion of the cavity sealing ring 58 to fix the relative position of the shell port 4 and the inner cylinder 55, the cavity sealing ring 58 can reduce oxidation in the internal sealing to improve the service life of the sealing element, at the same time, when the liquid passes through the connecting pipe 1 and enters the inside of the hexagonal plug 2, the electric current passes through the electric contact piece 52 in the slot 51 to supply power to the temperature sensor 56 connected through the power supply end shell 53, so that the liquid passing through the temperature sensor 56 changes the internal resistance of the temperature sensor 56 through temperature transfer, and measures the temperature of the liquid flowing through the temperature sensor 56 through the function change between resistance and temperature, and detects the temperature of the fluid entering the mechanical interior in real time; When the protrusion 511 connected with the fitting ring 510 is located in the groove 512, the inner cylinder 55 is clamped to the clamping strip 61 through the arc-shaped slot 513 and the disengaging slot 514 in the process of rotating the hexagonal plug 2 to drive the inner cylinder 55 to move, the inner shaft tube 63 that should rotate together is blocked by the groove 512 through the damping hinged block 64 connected with the outer ring 62, so that the inner cylinder 55 rotates relative to the inner shaft tube 63, the clamping strip 61 clamped in the arc-shaped slot 513 moves to the disengaging slot 514 through the rotation of the inner cylinder 55 to drive the arc-shaped slot 513 and the disengaging slot 514 to move, and is disconnected with the inner cylinder 55 through the disengaging slot 514, the inner shaft tube 63 disconnected with the inner cylinder 55 enters the mechanical fluid inside, and the internal temperature of the mechanical fluid is further measured through the temperature sensor 66 in the inner shaft tube 63, at the same time, when the power supply end shell 53 is in the power-on state, the temperature sensor 66 and the alloy column 613 are powered on through the power supply end shell 53 connected with the guide, so that the temperature sensor 66 and the alloy column 613 are in working state, the alloy column 613 is made of nickel-titanium alloy material, which will quickly heat up after being powered on, the alloy column 613 after heating transmits heat to the composite spring 612 contacted, since the contact side of the composite spring 612 is made of iron material and the other side is made of copper material, the expansion coefficient of copper after being heated is greater than that of iron, which will make the composite spring 612 bend, the composite spring 612 after bending is bent to the bottom chamber 616 under the sliding guidance of the guide block 611 and urges the liquid, the internal liquid pressure is increased through extruding the bottom chamber 616 to open the flow limiting piece 617, the flow limiting piece 617 is reset under the action of the extension elastic piece 615 on the side of the reset flow limiting piece 617 after the pressure is reduced, and the composite spring 612 after bending is disconnected from the alloy column 613, the composite spring 612 is reset without being heated, which makes the space of the bottom chamber 616 larger, the liquid will enter the one-way piece 614 through the input pipe 69 to enter the bottom chamber 616 to balance the pressure with the atmospheric pressure, and the liquid passing through the flow limiting piece 617 enters the spiral piece 67 and is discharged from the discharge port 618, when the liquid in the spiral piece 67 contacts the temperature sensor 66, the temperature of the mechanical fluid is measured, and the mechanical fluid continuously flows to reduce the temperature difference; When the hexagonal plug 2 is installed and the butt joint port 71 needs to be connected with the connecting pipe 1, the outer sliding ring 75 is pulled along the outer wall of the connecting pipe 1 by hand, at this time the outer sliding ring 75 pulls the reset spring through the spring ring 74, at this time the turnover top block 77 is turned over, the alignment strip 78 connected with the turnover top block 77 is used to correspond to the recessed part on the side of the hexagonal plug 2, the turnover top block 77 is prevented from being reset by the reset spring, the hexagonal plug 2 is conveniently installed by the tool set outside the hexagonal plug 2, after installation, the butt joint port 71 is inserted into the connecting pipe 1, at this time the outer sliding ring 75 is pulled again, the turnover top block 77 is turned over and no longer presses the side of the hexagonal plug 2, the reciprocating spring pulls the outer sliding ring 75 to reset and extrudes the ball 73 through the inner wall inclined surface to realize fixation from the inner wall of the connecting pipe 1 to the ring groove 72 of the butt joint port 71, at the same time, the reset outer sliding ring 75 pushes the connected lock rod 79 to slide and then is inserted into the lock groove 710 in the front side of the shell port 4, preventing the installed hexagonal plug 2 from loosening due to mechanical vibration.

[0026] The above is only the preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this, any person skilled in the art can replace or change the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A fluid temperature monitoring device for engineering machinery, comprising a connecting pipe (1), characterized in that: One end of the connecting pipe (1) is fixedly connected to a hexagonal plug (2), and a temperature monitoring mechanism (5) is provided at the end of the hexagonal plug (2) away from the connecting pipe (1). A housing port (4) is provided on the outside of the temperature monitoring mechanism (5). The temperature monitoring mechanism (5) includes a slot (51) located on the side of the hexagonal plug (2). An electric contact piece (52) is provided inside the slot (51). One end of the electric contact piece (52) is fixedly connected to a power supply end shell (53). A support frame (54) is fixedly connected to the inner wall of the hexagonal plug (2). A temperature sensor (56) is fixedly connected to the center of the support frame (54). An inner cylinder (55) is fixedly connected to the side of the hexagonal plug (2) away from the connecting pipe (1). The power supply end shell (53)... An elastic contact ring (57) is slidably connected to the outer wall. A cavity sealing ring (58) is fixedly connected to the side of the elastic contact ring (57). A threaded groove (59) is opened on the outer wall of the inner cylinder (55) away from the hexagonal insert (2). A matching ring (510) is threadedly connected to the outer side of the threaded groove (59). A protrusion (511) extends outward from the outer wall of the matching ring (510). A groove (512) is opened on the inner wall of the housing port (4). An arc groove (513) and a release groove (514) are opened on the rear side of the inner cylinder (55).

2. The engineering machinery fluid temperature monitoring device according to claim 1, characterized in that: The outer wall of the hexagonal plug (2) is fixedly connected with a guide plate (3), a fluid monitoring mechanism (6) is provided on the rear side of the temperature monitoring mechanism (5), and a plug-in locking mechanism (7) is provided at the front end of the connecting pipe (1).

3. The engineering machinery fluid temperature monitoring device according to claim 2, characterized in that: The power supply end shell (53) is fixedly connected to the slot (51), the temperature sensor (56) is fixedly connected to the power supply end shell (53), the outer surface of the elastic touch ring (57) is provided with annularly distributed dividing grooves, the arc groove (513) and the release groove (514) are connected, and the groove (512) and the protrusion (511) are slidably connected.

4. The engineering machinery fluid temperature monitoring device according to claim 3, characterized in that: The fluid monitoring mechanism (6) includes a locking strip (61), which is engaged with the inner side of the arc groove (513). An inner shaft tube (63) is fixedly connected to the rear side of the locking strip (61). An outer ring (62) is fixedly connected to the outer wall of the front end of the inner shaft tube (63). A stop block (64) is hinged to the upper and lower sides of the outer ring (62). A protruding strip (65) is provided on the side of each stop block (64). A spiral blade (67) is fixedly connected to the inner wall of the inner shaft tube (63). A temperature sensor (66) is fixedly connected to the axis of the spiral blade (67). A liquid-draining end (68) is fixedly connected to the front end of the spiral blade (67). A partition plate is fixedly connected to the front side of the liquid-draining end (68). (610) A guide block (611) is fixedly connected to the inner wall of the liquid-drum end (68), a composite spring sheet (612) is slidably connected to the inner wall of the guide block (611), an input pipe (69) is fixedly connected to the rear side of the liquid-drum end (68), a bottom chamber (616) is provided inside the liquid-drum end (68), a one-way plate (614) is provided at one end of the input pipe (69), a flow-limiting plate (617) is provided on the side of the liquid-drum end (68), and elastic plates (615) extend outward from the edges of the flow-limiting plate (617) and the one-way plate (614), an alloy column (613) is fixedly connected to the middle of the front side of the guide block (611), and an outlet (618) is fixedly connected to the rear side of the inner shaft tube (63).

5. The engineering machinery fluid temperature monitoring device according to claim 4, characterized in that: The protrusion (65) is fixedly connected to the outer ring (62), the input pipe (69) is connected to the inside of the liquid drum end (68), the input pipe (69) is fixedly connected to the spiral blade (67), the side of the liquid drum end (68) is provided with a communication port corresponding to the flow limiting plate (617), the elastic plate (615) on the side of the flow limiting plate (617) and the one-way plate (614) are both fixedly connected to the liquid drum end (68), the liquid drum end (68) is connected to the inside of the spiral blade (67), the alloy column (613) and the composite spring plate (612) are in contact with each other, the alloy column (613) is made of nickel-titanium alloy, the composite spring plate (612) is composed of copper and iron plates, and the outlet (618) is connected to the inside of the spiral blade (67).

6. The fluid temperature monitoring device for engineering machinery according to claim 5, characterized in that: The insertion locking mechanism (7) includes a docking port (71), an annular groove (72) is provided on the outer wall of the docking port (71), an outer slip ring (75) is slidably connected to the outer side of the connecting pipe (1), a spring ring (74) is fixedly connected to the inner wall of the outer slip ring (75), two rotating shafts (76) are fixedly connected to the rear side of the outer slip ring (75), a top block (77) is hinged between the two outer slip rings (75), an alignment strip (78) is fixedly connected to the rear side of the top block (77), a ball bearing (73) is slidably connected to the outer wall of the connecting pipe (1), four locking rods (79) are fixedly connected to the outer wall of the outer slip ring (75), and a locking groove (710) is provided on the front side of the housing port (4).

7. The fluid temperature monitoring device for engineering machinery according to claim 6, characterized in that: The side of the spring ring (74) is provided with a reset spring, and the two ends of the reset spring are fixedly connected to the spring ring (74) and the outer slip ring (75) respectively. The front side of the hexagonal insert (2) is provided with a recess, and the recess is inserted and connected to the alignment strip (78). The ball (73) is located between the connecting tube (1) and the outer slip ring (75).

8. The fluid temperature monitoring device for engineering machinery according to claim 7, characterized in that: The inner wall of the outer slip ring (75) is provided with an inclined surface, and the outer slip ring (75) contacts the ball (73) through the inclined surface. The locking rod (79) is slidably connected to the guide plate (3). The locking rod (79) and the locking groove (710) form a locking structure. There are multiple locking grooves (710), and the structure of each locking groove (710) is adapted to the corresponding locking rod (79).

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