Crankshaft connecting rod assembly

Abstract

The utility model relates to the technical field of crankshafts, in particular to a crankshaft connecting rod assembly which comprises two cranks, a connecting rod journal, a bearing sleeve, a connecting rod, two center shafts and two dismounting mechanisms, each dismounting mechanism comprises a mounting column, a threaded column, a threaded cylinder and four locking assemblies, each locking assembly comprises a telescopic sleeve piece and a clamping block, the mounting column is provided with four mounting grooves, and the clamping blocks are arranged in the mounting grooves. The threaded cylinder is provided with four clamping grooves, the inner side wall of the bearing sleeve is rotationally connected with a connecting rod journal, the connecting rod is rotationally connected with the outer side wall of the bearing sleeve, the two dismounting mechanisms are arranged between the two cranks and the two center shafts respectively, one end of the mounting column is fixedly connected with the cranks, and the threaded column is fixedly connected with the other end of the mounting column. The threaded cylinder is fixedly connected with the center shaft, the four locking assemblies are arranged on the mounting column, the telescopic sleeve piece is arranged between the mounting column and the clamping block, when the center shaft is damaged, the center shaft is disassembled through a corresponding disassembling mechanism, and practicability is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of crankshafts, in particular to a crankshaft connecting rod assembly. Background Art

[0002] The crankshaft-connecting rod assembly is a power transmission device, the primary moving part of the engine that enables the working cycle and completes energy conversion. Current crankshaft-connecting rod assemblies are subject to vibration during use due to engine operation. Once this occurs, the connecting rod cannot reliably transmit the force generated by the piston to the crankshaft, causing the force transmitted through the connecting rod to be intermittent. This can lead to jamming during crankshaft rotation, a highly problematic issue that can compromise engine performance and, in severe cases, even prevent proper engine operation.

[0003] A patent application with prior art publication number CN207261458U discloses a crankshaft-connecting rod assembly. The crankshaft-connecting rod assembly using the structure of the utility model can perform preliminary buffering and shock absorption on the vibration force through rubber blocks, and the remaining vibration force will all be concentrated on the positive ball. The positive ball will float up and down or left and right due to the vibration force. Regardless of whether the positive ball floats up and down or left and right, the positive magnetic plate will form a repulsive force to buffer and shock the positive ball, and with the assistance of an elastic membrane or a spring, the positive ball will be further buffered and shock absorbed. When the positive ball no longer floats up and down or left and right, the vibration force is completely eliminated, the connecting rod is no longer affected by the vibration force, and can stably transmit the force to ensure the normal rotation of the crankshaft, thereby ensuring the performance of the crankshaft-connecting rod assembly.

[0004] However, in the prior art, since the crank is connected to the crank rod by diesel welding, when a small part on the crank rod is damaged, the crank and the crank rod need to be disassembled at the same time to repair the crank rod, resulting in low practicality. Utility Model Content

[0005] The purpose of the utility model is to provide a crankshaft-connecting rod assembly, which aims to solve the problem in the prior art that, since the crank and the crank rod are connected by diesel welding, when a small part on the crank rod is damaged, it is necessary to disassemble the crank and the crank rod at the same time to repair the crank rod, resulting in low practicality.

[0006] To achieve the above-mentioned purpose, the utility model provides a crankshaft-connecting rod assembly, including two cranks, connecting rod journals, bearing sleeves, connecting rods, two center shafts and two disassembly mechanisms. The disassembly mechanism includes a mounting post, a threaded post, a threaded barrel and four locking assemblies. The locking assembly includes a telescopic kit and a clamping block. The mounting post has four mounting slots, the threaded barrel has four clamping slots, the connecting rod journal is arranged between the two cranks, the inner side wall of the bearing sleeve is rotatably connected to the connecting rod journal, the connecting rod is rotatably connected to the outer side wall of the bearing sleeve, the two disassembly mechanisms are respectively arranged between the two cranks and the two center shafts, one end of the mounting post is fixedly connected to the crank, the threaded post is fixedly connected to the other end of the mounting post, the threaded barrel is fixedly connected to the center shaft, the four locking assemblies are arranged on the mounting post, the telescopic kit is arranged between the mounting post and the clamping block, and is located in the mounting slot and the clamping slot.

[0007] Wherein, the telescopic kit includes a telescopic spring and a telescopic rod, the two ends of the telescopic spring are fixedly connected to the mounting column and the mounting column, and are located in the mounting groove, and the two ends of the telescopic rod are fixedly connected to the mounting column and the mounting column, and are located in the telescopic spring.

[0008] Among them, the disassembly mechanism also includes a fixing ring, two sliders and two sliding grooves. The fixing ring is fixedly connected to the four blocks respectively. The two sliding grooves are respectively arranged at the two ends of the mounting column. The two sliders are fixedly connected to the fixing ring and slidably connected to the mounting column, and are respectively located in the two sliding grooves.

[0009] Wherein, the crank-connecting rod assembly further includes an oil-slinging pan, and the oil-slinging pan is fixedly connected to one of the cranks.

[0010] Wherein, the crank-connecting rod assembly further comprises two splines, and the two splines are respectively fixedly connected to the two central shafts and are respectively located at one end of the central shaft away from the crank.

[0011] Wherein, the central axis has a taper and is located in the middle of the central axis.

[0012] The utility model relates to a crankshaft-connecting rod assembly. When one of the central shafts is damaged, the four clamping blocks are pulled toward the direction of the crank, the four telescopic kits are contracted, and the four clamping blocks are respectively moved from the four clamping slots into the mounting slots. At this time, the central shaft is rotated and pulled in a direction away from the crank, the threaded column is moved out of the threaded barrel, and the central shaft is taken out. After the operator completes the maintenance of the central shaft, the threaded barrel on the central shaft is aligned with the threaded column and the four clamping blocks are pulled toward the direction of the crank again. The four telescopic kits are contracted, and the four clamping blocks are respectively moved The screw threaded rod is inserted into the threaded barrel, and the four clamping blocks are respectively driven by the four telescopic kits to move in the direction of the clamping slots. The four clamping blocks are respectively inserted into the four clamping slots to limit the center shaft so that the center shaft and the mounting column do not rotate relative to each other, ensuring that the center shaft and the crank do not fall off. When the center shaft is damaged, there is no need to remove the crank, but only the center shaft needs to be removed for maintenance, which increases the practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art.

[0014] Figure 1 It is a structural schematic diagram of the crankshaft connecting rod assembly of the present utility model.

[0015] Figure 2 It is a structural schematic diagram of the crankshaft connecting rod assembly of the present invention from another direction.

[0016] Figure 3 It is a front view of the crankshaft connecting rod assembly of the present utility model.

[0017] Figure 4 It is a structural schematic diagram of the installation column of the utility model.

[0018] 101-crank, 102-bearing sleeve, 103-connecting rod, 104-connecting rod journal, 105-mounting column, 106-threaded barrel, 107-center shaft, 108-spline, 109-threaded column, 110-mounting groove, 111-slot, 112-telescopic rod, 113-telescopic spring, 114-block, 115-fixing ring, 116-slider, 117-slide, 118-oil slinger pan, 119-taper. DETAILED DESCRIPTION

[0019] See also Figures 1 to 4,in, Figure 1 This is a structural diagram of the crankshaft connecting rod assembly of the utility model. Figure 2 This is a structural diagram of the crankshaft connecting rod assembly of the utility model from another direction. Figure 3 This is a front view of the crankshaft connecting rod assembly of the utility model. Figure 4 It is a structural schematic diagram of the installation column of the utility model.

[0020] The present invention provides a crankshaft-connecting rod assembly 103, including two cranks 101, an oil-slinging pan 118, a connecting rod journal 104, a bearing sleeve 102, a connecting rod 103, two center shafts 107 and two disassembly mechanisms, wherein the disassembly mechanism includes a fixing ring 115, two sliders 116, two slide grooves 117, a mounting column 105, a threaded column 109, a threaded barrel 106 and four locking components, wherein the locking component includes a telescopic kit and a clamping block 114, the mounting column 105 has four mounting grooves 110, the threaded barrel 106 has four clamping grooves 111, the telescopic kit includes a telescopic spring 113 and a telescopic rod 112, and the center shaft 107 has a taper 119. The above-mentioned solution solves the problem in the prior art that the crank 101 and the center shaft 107 are connected by diesel welding. When a small part on the rod of the crank 101 is damaged, the crank 101 and the center shaft 107 need to be disassembled at the same time to repair the center shaft 107, resulting in low practicality.

[0021] In this embodiment, the connecting rod journal 104 is arranged between the two cranks 101, the inner side wall of the bearing sleeve 102 is rotatably connected to the connecting rod journal 104, the connecting rod 103 is rotatably connected to the outer side wall of the bearing sleeve 102, the two disassembly mechanisms are respectively arranged between the two cranks 101 and the two center shafts 107, one end of the mounting post 105 is fixedly connected to the crank 101, the threaded post 109 is fixedly connected to the other end of the mounting post 105, the threaded barrel 106 is fixedly connected to the center shaft 107, and the four locking groups The component is arranged on the mounting post 105, the telescopic kit is arranged between the mounting post 105 and the block 114, and is located in the mounting groove 110 and the slot 111. When one of the central shafts 107 is damaged, the four blocks 114 are pulled toward the direction of the crank 101, the four telescopic kits are contracted, and the four blocks 114 are respectively moved from the four slots 111 to the mounting groove 110. At this time, the central shaft 107 is rotated and pulled away from the crank 101, and the threaded column 109 is moved away from the crank 101. The threaded barrel 106 is moved out, and the central shaft 107 is taken out. After the operator completes the maintenance of the central shaft 107, the threaded barrel 106 on the central shaft 107 is aligned with the threaded column 109, and the four blocks 114 are pulled toward the direction of the crank 101 again. The four telescopic kits are retracted, and the four blocks 114 are respectively moved into the mounting grooves 110. The central shaft 107 is then rotated and pushed toward the direction close to the crank 101. The threaded column 109 is inserted into the threaded barrel 106. At this time, the operator loosens the screw thread. The four clamping blocks 114 are opened, and the four telescopic kits respectively drive the four clamping blocks 114 to move toward the slots 111. The four clamping blocks 114 are respectively inserted into the four slots 111 to limit the central shaft 107, so that the central shaft 107 and the mounting column 105 do not rotate relative to each other, ensuring that the central shaft 107 and the crank 101 do not fall off. When the central shaft 107 is damaged, there is no need to remove the crank 101, and only the central shaft 107 needs to be removed separately for maintenance, thereby increasing the practicality of the device.

[0022] Furthermore, both ends of the telescopic spring 113 are fixedly connected to the mounting post 105 and the mounting post 105 and are located in the mounting groove 110 , and both ends of the telescopic rod 112 are fixedly connected to the mounting post 105 and the mounting post 105 and are located in the telescopic spring 113 .

[0023] The four clamping blocks 114 are respectively engaged in the four clamping slots 111, thereby limiting the position of the central shaft 107 so that the central shaft 107 and the mounting post 105 do not rotate relative to each other, thereby ensuring that the central shaft 107 and the crank 101 do not fall off.

[0024] Furthermore, the fixing ring 115 is fixedly connected to the four blocks 114 respectively, the two slide grooves 117 are respectively arranged at both ends of the mounting column 105, the two sliders 116 are fixedly connected to the fixing ring 115, and are slidingly connected to the mounting column 105, and are respectively located in the two slide grooves 117.

[0025] In this embodiment, when pulling the four blocks 114, the operator can pull the fixed ring 115 to move toward the direction of the crank 101, and the two sliders 116 slide in the two slide grooves 117 respectively. By pulling the fixed ring 115 to move the block 114, the operator's operation convenience is increased.

[0026] Furthermore, the oil-slinging pan 118 is fixedly connected to one of the cranks 101 .

[0027] In this embodiment, the oil slinger pan 118 is made of wear-resistant and high-temperature resistant materials, such as cast iron, alloy steel or plastic, etc. The shape and size of the oil slinger pan 118 match the rotation speed of the crankshaft and the viscosity of the lubricating oil to achieve the best oil slinging effect.

[0028] Furthermore, the two splines 108 are fixedly connected to the two central shafts 107 respectively, and are respectively located at one end of the central shaft 107 away from the crank 101.

[0029] In this embodiment, the design of the spline 108 can enable the central shaft 107 and the connecting piece to be precisely processed and matched.

[0030] Furthermore, the central axis 107 has a taper 119 located in the middle of the central axis 107 .

[0031] In this embodiment, the taper 119 can provide high-precision axial positioning because the contact of the tapered surfaces can be naturally centered, reducing radial offset.

[0032] When using the present invention, when one of the central shafts 107 is damaged, the four blocks 114 are pulled toward the direction of the crank 101, the four telescopic springs 113 contract, and the four blocks 114 are respectively moved from the four slots 111 to the mounting slots 110. At this time, the central shaft 107 is rotated and pulled away from the crank 101, the threaded column 109 is removed from the threaded barrel 106, and the central shaft 107 is taken out. When the central shaft 107 is damaged, there is no need to remove the crank 101, and only the central shaft 107 needs to be removed separately for maintenance, which increases the practicality of the device.

[0033] The above disclosure is only a preferred embodiment of the present application and cannot be used to limit the scope of rights of the present application. Ordinary technicians in this field can understand that all or part of the processes of the above embodiment and equivalent changes made in accordance with the claims of the present application are still within the scope covered by the present application.

Claims

1. A crankshaft-connecting rod assembly, comprising two cranks, a connecting rod journal, a bearing sleeve, and a connecting rod, wherein the connecting rod journal is disposed between the two cranks, the inner sidewall of the bearing sleeve is rotatably connected to the connecting rod journal, and the connecting rod is rotatably connected to the outer sidewall of the bearing sleeve, characterized in that: It also includes two central shafts and two disassembly mechanisms, the disassembly mechanism includes a mounting post, a threaded post, a threaded barrel and four locking assemblies, the locking assembly includes a telescopic kit and a card block, the mounting post has four mounting slots, the threaded barrel has four card slots, the two disassembly mechanisms are respectively arranged between the two cranks and the two central shafts, one end of the mounting post is fixedly connected to the crank, the threaded post is fixedly connected to the other end of the mounting post, the threaded barrel is fixedly connected to the central shaft, the four locking assemblies are arranged on the mounting post, the telescopic kit is arranged between the mounting post and the card block, and is located in the mounting slot and the card slot.

2. The crankshaft-connecting rod assembly according to claim 1, wherein: The telescopic kit includes a telescopic spring and a telescopic rod, two ends of the telescopic spring are fixedly connected to the mounting column and the mounting column, and are located in the mounting groove, and two ends of the telescopic rod are fixedly connected to the mounting column and the mounting column, and are located in the telescopic spring.

3. The crankshaft-connecting rod assembly according to claim 2, wherein: The disassembly mechanism also includes a fixing ring, two sliders and two sliding grooves. The fixing ring is fixedly connected to the four blocks respectively. The two sliding grooves are respectively arranged at both ends of the mounting column. The two sliders are fixedly connected to the fixing ring and slidably connected to the mounting column, and are respectively located in the two sliding grooves.

4. The crankshaft-connecting rod assembly according to claim 3, wherein: The crank-connecting rod assembly further includes an oil slinger pan, which is fixedly connected to one of the cranks.

5. The crankshaft connecting rod assembly according to claim 4, characterized in that: The crank-connecting rod assembly further comprises two splines, which are respectively fixedly connected to the two central shafts and are respectively located at one end of the central shaft away from the crank.

6. The crankshaft-connecting rod assembly according to claim 5, wherein: The central axis has a taper and is located in the middle of the central axis.

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