A piston ring temperature resistance detection device

Abstract

The present application relates to the technical fields of piston ring temperature resistance detection, in particular to a piston ring temperature resistance detection device, which comprises a simulation cylinder body, a temperature control device is arranged on one side of the simulation cylinder body, a cylinder channel is arranged on the upper end surface of the simulation cylinder body, a cylinder sleeve piston is arranged above the cylinder channel, a bearing rod is connected to the upper end of the cylinder sleeve piston, the bearing rod is located between two groups of guide mechanisms, and a reciprocating mechanism with locking function is connected to one end of the bearing rod; a rotating knob is provided, the knob drives a lead screw, the rotation of the lead screw drives a screw sleeve to drive a guide block to move downward along a guide groove, meanwhile, the screw sleeve drives a pull rod to move downward through a group of pins, the pull rod drives the bearing rod to slide downward along four groups of guide wheels through another group of pins, the bearing rod pushes the cylinder sleeve piston and the piston ring into the cylinder channel, therefore, when the piston ring is installed or dismounted, the rotating knob is rotated, the piston ring can be separated from or entered into the cylinder channel without dismounting the cylinder sleeve piston, thereby facilitating the installation and dismounting of the piston ring.

Description

Technical Field

[0001] This invention relates to the field of piston ring temperature resistance testing technology, specifically to a piston ring temperature resistance testing device. Background Technology

[0002] The cylinder liner-piston ring system is a core component of diesel engines for energy conversion, and its performance directly affects the thermal efficiency of the diesel engine. Piston ring temperature resistance testing is one of the piston ring quality inspection methods. The existing piston ring temperature resistance testing method involves directly installing the piston rings on a set of simulated diesel cylinder blocks for testing. The diesel cylinder blocks are kept at a constant temperature through a temperature control system, so that the temperature of the diesel cylinder blocks is close to the temperature generated by fuel combustion in the actual diesel engine cylinder. Then, the cylinder liner piston drives the piston rings to move in the cylinder block. After that, the piston rings are removed, and the wear of the piston rings is measured to determine whether the piston rings are wear-resistant and temperature-resistant under the actual diesel engine cylinder temperature.

[0003] In actual testing, piston rings need to be installed on the cylinder liner piston, which is located inside the cylinder. Therefore, installing piston rings requires first removing the cylinder liner piston from the cylinder, and then putting the piston rings back into the cylinder together after installation. This process involves installing and removing the cylinder liner piston, making piston ring installation quite troublesome. Summary of the Invention

[0004] The purpose of this invention is to provide a piston ring temperature resistance testing device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a piston ring temperature resistance testing device, comprising a simulated cylinder body, a temperature control device provided on one side of the simulated cylinder body, a cylinder passage opened on the upper end face of the simulated cylinder body, a cylinder liner piston provided directly above the cylinder passage, a receiving rod connected to the upper end of the cylinder liner piston, the receiving rod being located between two sets of guide mechanisms, and one end of the receiving rod being connected to a reciprocating mechanism with a locking function.

[0006] The reciprocating mechanism includes a reciprocating disc, a support shaft connected to the middle of one side of the reciprocating disc, a support plate screwed onto the support shaft, a rectangular hole opened on the reciprocating disc, an adjustment mechanism installed in the rectangular hole, a pull rod installed on the other side of the reciprocating disc, and two sets of pins installed at both ends of the pull rod.

[0007] Preferably, the adjustment mechanism includes a lead screw, with a knob connected to the upper end of the lead screw and a gear plate fixedly connected to the lower end of the lead screw. Six sets of teeth are evenly distributed on the gear plate. The lead screw is screwed to a threaded sleeve. Two sets of guide blocks are symmetrically arranged on both sides of the threaded sleeve. A locking mechanism is provided below the threaded sleeve.

[0008] Preferably, the locking mechanism includes a gear disk II, three sets of guide posts are connected at equal angles on the upper end face of the gear disk II, six sets of teeth are distributed at equal angles on the gear disk II, and springs are sleeved on the guide posts.

[0009] Preferably, the guiding mechanism includes a support frame, which is fixed on the simulated cylinder body. A groove is opened at one end of the support frame, and two sets of guide wheels are arranged in the groove. Annular grooves are provided on the guide wheels, and two sets of bearings are arranged at both ends of the guide wheels. The bearings are embedded in the inner wall of the groove. The guide wheels are rotatably connected to the receiving rod, which is located between the four sets of annular grooves.

[0010] Preferably, two sets of guide grooves are symmetrically arranged on both sides of the rectangular hole, two sets of holes are opened at both ends of the pull rod, bearings are fixed in the holes, the inner ring of the bearing is fixedly connected to the pin, one set of pins is fixedly connected to the support rod, the other set of pins is fixedly connected to the threaded sleeve, and the support plate is fixed on the simulated cylinder body.

[0011] Preferably, the lead screw is screwed into the rectangular hole, the guide block and the threaded sleeve are integrally formed, the guide block is slidably connected to the guide groove, and three sets of through holes are opened at equal angles on the threaded sleeve, and the through holes are slidably connected to the guide post.

[0012] Preferably, the second gear is mounted on the lead screw, the spring is located between the second gear and the screw sleeve, and the second set of six teeth meshes with the first set of six teeth.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. Rotating the knob drives the lead screw, which in turn causes the threaded sleeve to move the guide block downwards along the guide groove. Simultaneously, the threaded sleeve drives the pull rod downwards via a set of pins. The pull rod, through another set of pins, drives the receiving rod to slide downwards along four sets of guide wheels. The receiving rod pushes the cylinder liner piston, along with the piston rings, into the cylinder passage. Therefore, when installing or removing piston rings, rotating the knob allows the piston rings to disengage from or enter the cylinder passage without disassembling the cylinder liner piston, thus facilitating the installation and removal of piston rings.

[0015] 2. During the process of the cylinder liner piston and piston rings entering the cylinder passage, the threaded sleeve simultaneously drives the locking mechanism to move downwards, and the rotating lead screw drives the first gear to rotate. As the locking mechanism approaches the rotating first gear, the first gear will rub against the second gear, causing the first tooth on the first gear to rub against the second tooth on the second gear. At the same time, the first tooth squeezes the second tooth, causing the second gear to push the guide post upwards along the through hole and compress the spring. As the spring is continuously compressed, the greater the spring force, the tighter the meshing between the second tooth and the first tooth becomes, until the second gear cannot move. Due to the spring's rebound force, the meshing force between the second tooth and the first tooth is large, thus preventing the first gear and the lead screw from rotating easily. This ensures that even if the entire reciprocating mechanism vibrates during operation, the lead screw will not deflect, and the threaded sleeve will not shift. This allows the cylinder liner piston and piston rings to reciprocate along the cylinder passage at equal distances, further improving the accuracy of the piston ring temperature resistance test data. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the present invention.

[0017] Figure 2 This is a schematic diagram of the combination of the receiving rod and the reciprocating mechanism of the present invention.

[0018] Figure 3 This is a schematic diagram of the reciprocating disc, adjusting mechanism, and pin assembly of the present invention.

[0019] Figure 4 This is a schematic diagram of the adjustment mechanism of the present invention.

[0020] Figure 5 This is a schematic diagram of the guiding mechanism of the present invention.

[0021] In the diagram: 1. Simulated cylinder block; 2. Temperature control device; 3. Cylinder passage; 4. Cylinder liner piston; 5. Support rod; 6. Guide mechanism; 7. Reciprocating mechanism; 701. Reciprocating disc; 702. Support shaft; 703. Support plate; 704. Rectangular hole; 7041. Guide groove; 705. Adjustment mechanism; 706. Tie rod; 707. Pin; 7051. Lead screw; 7052. Knob; 7053. Gear disc one; 7054. Gear one; 7055. Screw sleeve; 7056. Guide block; 7057. Locking mechanism; 71. Gear disc two; 72. Gear two; 73. Guide post; 74. Spring; 601. Support frame; 602. Groove one; 603. Guide wheel; 604. Annular groove. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] Please see Figures 1 to 5This invention provides a technical solution: a piston ring temperature resistance testing device, comprising a simulated cylinder 1, a temperature control device 2 disposed on one side of the simulated cylinder 1, a cylinder passage 3 formed on the upper surface of the simulated cylinder 1, a cylinder liner piston 4 disposed directly above the cylinder passage 3, a receiving rod 5 connected to the upper end of the cylinder liner piston 4, the receiving rod 5 being located between two sets of guide mechanisms 6, one end of the receiving rod 5 being connected to a reciprocating mechanism 7 with a locking function, the reciprocating mechanism 7 including a reciprocating disc 701, a support shaft 702 connected to the middle of one side of the reciprocating disc 701, and the support shaft 702 being spun into a support... Plate 703, reciprocating disc 701 has a rectangular hole 704, an adjustment mechanism 705 is installed in the rectangular hole 704, a pull rod 706 is installed on the other side of the reciprocating disc 701, and two sets of pins 707 are installed at both ends of the pull rod 706. The guide mechanism 6 includes a support frame 601, which is fixed on the simulated cylinder 1. A groove 602 is opened at one end of the support frame 601, and two sets of guide wheels 603 are installed in the groove 602. An annular groove 604 is provided on the guide wheel 603, and two sets of bearings are installed at both ends of the guide wheel 603, with the bearings embedded in the groove. The inner wall of cylinder 1 is connected to guide wheel 603, which is rotatably connected to receiving rod 5. Receiving rod 5 is located between four sets of annular grooves 604. Support shaft 702 is driven by motor, and temperature control device 2 is used to control the temperature of simulated cylinder 1. Piston rings are installed on cylinder liner piston 4. During testing, cylinder liner piston 4 and piston rings are placed into cylinder passage 3 through adjustment mechanism 705. Then, motor drives reciprocating disk 701 to rotate through support shaft 702. Reciprocating disk 701 drives pull rod 706 through a set of pins 707. Pull rod 706 Another set of pins 707 drives the receiving rod 5 to slide downwards along the four sets of guide wheels 603. The rotation of the guide wheels 603 guides the movement of the receiving rod 5. The receiving rod 5 pushes the cylinder liner piston 4 and piston rings to slide along the cylinder passage 3. As the reciprocating plate 701 rotates continuously, the connecting rod 706 causes the cylinder liner piston 4 and piston rings to move up and down along the cylinder passage 3, thereby simulating the reciprocating movement of the cylinder liner piston 4 and piston rings in the engine cylinder, making the piston ring temperature resistance test data more accurate.

[0024] The adjusting mechanism 705 includes a lead screw 7051, with a knob 7052 connected to the upper end of the lead screw 7051 and a gear disc 7053 fixedly connected to the lower end of the lead screw 7051. Six sets of teeth 7054 are evenly distributed on the gear disc 7053. The lead screw 7051 is screwed to a threaded sleeve 7055. Two sets of guide blocks 7056 are symmetrically arranged on both sides of the threaded sleeve 7055. A locking mechanism 7057 is located below the threaded sleeve 7055. Two sets of guide grooves 7041 are symmetrically arranged on both sides inside a rectangular hole 704. Two sets of holes are opened at both ends of the pull rod 706, and bearings are fixed inside the holes. The inner ring of the bearing is fixedly connected to a pin 707. One set of pins 707 is fixedly connected to a receiving rod 5, and the other set of pins 707 is fixedly connected to the threaded sleeve 7055. A support plate 703 is fixed to the simulated cylinder body 1. The lead screw 7051 is screwed into the rectangular hole 704. The guide blocks 7056 and the threaded sleeve 7055 are integrally formed. The guide groove 7041 is slidably connected to the 7056. Three sets of through holes are opened at equal angles on the threaded sleeve 7055. The through holes are slidably connected to the guide post 73. When the piston ring needs to be inspected, the knob 7052 is rotated. The knob 7052 drives the lead screw 7051. The rotation of the lead screw 7051 causes the threaded sleeve 7055 to drive the guide block 7056 to move downward along the guide groove 7041. At the same time, the threaded sleeve 7055 drives the pull rod 706 downward through a set of pins 707. The pull rod 706 drives the receiving rod 5 to slide downward along the four sets of guide wheels 603 through another set of pins 707. The receiving rod 5 pushes the cylinder liner piston 4 together with the piston ring into the cylinder passage 3. Therefore, when installing and removing the piston ring, by rotating the knob 7052, the piston ring can be disengaged from or enter the cylinder passage 3 without removing the cylinder liner piston 4, thus facilitating the installation and removal of the piston ring.

[0025] The locking mechanism 7057 includes a second gear disc 71. Three sets of guide posts 73 are connected at equal angles to the upper surface of the second gear disc 71. Six sets of teeth 72 are distributed at equal angles on the second gear disc 71. Springs 74 are sleeved on the guide posts 73. The second gear disc 71 is sleeved on the lead screw 7051. The springs 74 are located between the second gear disc 71 and the threaded sleeve 7055. The six sets of teeth 72 mesh with the six sets of teeth 7054. During the process of the cylinder liner piston 4 and piston rings entering the cylinder passage 3, the threaded sleeve 7055 simultaneously drives the locking mechanism 7057 to move downwards. The rotating lead screw 7051 drives the first gear disc 7053 to rotate. As the locking mechanism 7057 approaches the rotating first gear disc 7053, the first gear disc 7053 rubs against the second gear disc 71, causing the teeth 7054 on the first gear disc 7053 to rub against the teeth on the second gear disc 71. Simultaneously, tooth 7054 presses tooth 72, causing tooth 71 to push guide post 73 upward along the through hole and compress spring 74. As spring 74 is continuously compressed, the greater the spring force of spring 74, the tighter the meshing between tooth 72 and tooth 7054 becomes, until tooth 71 can no longer move. Due to the rebound force of spring 74, the meshing force between tooth 72 and tooth 7054 is large, thus preventing tooth 7053 and lead screw 7051 from rotating easily. This ensures that even if the entire reciprocating mechanism 7 vibrates during operation, lead screw 7051 will not deflect and screw sleeve 7055 will not shift, causing cylinder piston 4 and piston rings to reciprocate at equal distances along cylinder passage 3, further improving the accuracy of piston ring temperature resistance detection data.

[0026] During use: Rotating knob 7052 drives lead screw 7051. The rotation of lead screw 7051 causes threaded sleeve 7055 to move guide block 7056 downward along guide groove 7041. Simultaneously, threaded sleeve 7055 drives pull rod 706 downward via a set of pins 707. Pull rod 706 drives receiving rod 5 downward along four sets of guide wheels 603 via another set of pins 707. Receiving rod 5 pushes cylinder liner piston 4 along with piston rings into cylinder passage 3. During the process of cylinder liner piston 4 and piston rings entering cylinder passage 3, threaded sleeve 7055 simultaneously drives locking mechanism 7057 downward. Furthermore, the rotating lead screw 7051 drives the first gear disk 7053 to rotate. As the locking mechanism 7057 approaches the rotating first gear disk 7053, the first gear disk 7053 will rub against the second gear disk 71, causing the first tooth 7054 on the first gear disk 7053 to rub against the second tooth 72 on the second gear disk 71. At the same time, the first tooth 7054 squeezes the second tooth 72, causing the second gear disk 71 to push the guide post 73 to move upward along the through hole and compress the spring 74. As the spring 74 is continuously compressed, the greater the spring force of the spring 74, the tighter the meshing between the second tooth 72 and the first tooth 7054 becomes, until the second gear disk 71 can no longer move.

[0027] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A piston ring temperature resistance testing device, comprising a simulated cylinder body (1), a temperature control device (2) provided on one side of the simulated cylinder body (1), a cylinder passage (3) opened on the upper end face of the simulated cylinder body (1), a cylinder liner piston (4) provided directly above the cylinder passage (3), a receiving rod (5) connected to the upper end of the cylinder liner piston (4), the receiving rod (5) being located between two sets of guide mechanisms (6), characterized in that: One end of the receiving rod (5) is connected to a reciprocating mechanism (7) with a locking function. The reciprocating mechanism (7) includes a reciprocating disc (701), a support shaft (702) connected to the middle of one side of the reciprocating disc (701), a support plate (703) spun onto the support shaft (702), a rectangular hole (704) opened on the reciprocating disc (701), an adjustment mechanism (705) provided in the rectangular hole (704), a pull rod (706) provided on the other side of the reciprocating disc (701), and two sets of pins (707) provided at both ends of the pull rod (706). The adjusting mechanism (705) includes a lead screw (7051), with a knob (7052) connected to the upper end of the lead screw (7051) and a gear disk (7053) fixedly connected to the lower end of the lead screw (7051). Six sets of teeth (7054) are evenly distributed on the gear disk (7053). The lead screw (7051) is screwed to a threaded sleeve (7055). Two sets of guide blocks (7056) are symmetrically arranged on both sides of the threaded sleeve (7055). A locking mechanism (7057) is provided below the threaded sleeve (7055). The locking mechanism (7057) includes a gear disk II (71), three sets of guide posts (73) are connected at equal angles on the upper end face of the gear disk II (71), six sets of teeth II (72) are distributed at equal angles on the gear disk II (71), and springs (74) are sleeved on the guide posts (73). Two sets of holes are opened at both ends of the pull rod (706), and bearings are fixed in the holes. The inner ring of the bearing is fixedly connected to the pin (707). One set of the pin (707) is fixedly connected to the support rod (5), and the other set of the pin (707) is fixedly connected to the threaded sleeve (7055). The support plate (703) is fixed on the simulated cylinder (1). The second gear disc (71) is sleeved on the lead screw (7051), the spring (74) is located between the second gear disc (71) and the threaded sleeve (7055), and the six sets of teeth (72) mesh with the six sets of teeth (7054).

2. The piston ring temperature resistance testing device according to claim 1, characterized in that: The guiding mechanism (6) includes a support frame (601), which is fixed on the simulated cylinder (1). A groove (602) is opened at one end of the support frame (601). Two sets of guide wheels (603) are arranged in the groove (602). An annular groove (604) is arranged on the guide wheel (603). Two sets of bearings are arranged at both ends of the guide wheel (603). The bearings are embedded in the inner wall of the groove (602). The guide wheel (603) is rotatably connected to the receiving rod (5). The receiving rod (5) is located between the four sets of annular grooves (604).

3. The piston ring temperature resistance testing device according to claim 1, characterized in that: Two sets of guide grooves (7041) are symmetrically arranged on both sides inside the rectangular hole (704).

4. The piston ring temperature resistance testing device according to claim 1, characterized in that: The lead screw (7051) is screwed into the rectangular hole (704). The guide block (7056) and the threaded sleeve (7055) are integrally formed. The guide block (7056) is slidably connected to the guide groove (7041). Three sets of through holes are opened at equal angles on the threaded sleeve (7055). The through holes are slidably connected to the guide post (73).

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