Anti-loosening valve brake rocker arm assembly for engine

Abstract

The utility model provides an anti-loosening valve brake rocker arm assembly for an engine, which belongs to the field of rocker arm assemblies and comprises a rocker arm body, a bolt is mounted on the rocker arm body in a penetrating manner, and a nut is mounted on the bolt; a cylinder is fixed to the bolt, a limiting ring which is driven downwards and cannot rotate is installed at the bottom of the connecting ring, a plurality of locking grooves are formed in the nut, a plurality of locking rods are fixed to the bottom of the limiting ring, and the locking rods are inserted into the locking grooves to lock the nut. A connecting ring is arranged on the cylinder, so that the connecting ring cannot rotate relative to the bolt, a lock pin which is arranged on the connecting ring in a sliding manner is arranged on the connecting ring in a penetrating manner, a plurality of slots are formed in the outer wall of the cylinder, the lock pin is connected in the slots in a sliding manner, and a first spring is fixed between the lock pin and the connecting ring. The first spring, the second spring and the lock pin are arranged, so that the nut can be effectively prevented from loosening on the bolt, and normal operation of an engine is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of rocker arm assemblies, in particular to a valve brake rocker arm assembly for an anti-loosening engine. Background Art

[0002] An engine is a machine that can convert other forms of energy into mechanical energy, including internal combustion engines, external combustion engines, jet engines, electric motors, etc. For example, internal combustion engines usually convert chemical energy into mechanical energy. The term engine can be applied to power generation devices or the entire machine including the power device.

[0003] The engine valve rocker arm device is an important part of the engine. The function of the engine valve and rocker arm is to cooperate with the camshaft to control the valve opening time and opening height to complete the engine's intake, exhaust and braking. The bolts on the surface of the existing brake rocker arm are prone to loosening or even falling off due to the long-term vibration of the rocker arm during operation, which leads to the engine being unable to operate normally. Most of the existing brake rocker arms do not have a limiting and fixing structure for the bolts, which brings trouble to the maintenance and inspection work of the staff. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides an anti-loosening engine valve brake rocker arm assembly.

[0005] The embodiment of the utility model provides a valve brake rocker arm assembly for an anti-loosening engine, comprising:

[0006] A rocker arm body, wherein a bolt is installed through the rocker arm body, and a nut is installed on the bolt;

[0007] A locking mechanism for locking a nut so that it does not rotate, wherein a cylinder is fixed on the bolt, a connecting ring that is movably arranged and can be locked is sleeved on the cylinder, a limiting ring that is driven downward and does not rotate is installed at the bottom of the connecting ring, a plurality of locking grooves are provided on the nut, a plurality of locking rods are fixed at the bottom of the limiting ring, the locking rods are inserted into the locking grooves to lock the nut so that it does not rotate relative to the bolt; the limiting ring, the second spring and the fixing ring are sleeved on the outside of the bolt, and at this time the staff manually pulls the locking pin so that the locking pin will not be in the connecting ring, hindering the connecting ring from being sleeved on the outside of the cylinder until the locking rod is stuck in the locking groove, and then the connecting ring continues to move downward, and the connecting ring moves downward to drive the fixing ring to move downward and squeeze the second spring until the locking pin is stuck in the slot, thus completing the locking installation and effectively preventing the nut from loosening.

[0008] Furthermore, the connecting ring is penetrated by a locking pin slidably arranged therewith, the outer wall of the cylinder is provided with a plurality of slots, the locking pin is slidably connected in the slots, and a first spring is fixed between the locking pin and the connecting ring.

[0009] Furthermore, a fixing ring is fixed to the bottom of the connecting ring, a second spring is fixed to the bottom of the fixing ring, and the second spring is fixedly connected to the upper end of the limiting ring.

[0010] Furthermore, the plurality of locking grooves are distributed in a ring array at the upper end of the nut.

[0011] Furthermore, the cylinder and the bolt are integrally formed, and the outer diameter of the cylinder is smaller than the outer diameter of the bolt.

[0012] Furthermore, the plurality of locking rods are distributed in a ring array.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] The utility model can effectively prevent the nut from being loosened on the bolt by arranging the first spring, the second spring and the locking pin, so as to ensure the normal operation of the engine. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the anti-loosening engine valve brake rocker arm assembly described in an embodiment of the utility model.

[0016] Figure 2 This is a disassembled view of the locking mechanism in the anti-loosening engine valve brake rocker arm assembly described in the embodiment of the utility model.

[0017] Figure 3 It is a schematic diagram of the bolts in the anti-loosening engine valve brake rocker arm assembly described in the embodiment of the utility model.

[0018] In the above drawings: 1 rocker arm body, 2 bolts, 3 nuts, 4 cylinders, 5 connecting rings, 6 locking pins, 7 fixing rings, 8 locking grooves, 9 limiting rings, 10 second springs, 11 first springs, 12 locking rods, and 13 slots. DETAILED DESCRIPTION

[0019] The technical solution of the present utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0020] like Figure 1-Figure 3 As shown, the embodiment of the utility model provides an anti-loosening engine valve brake rocker arm assembly, comprising:

[0021] A rocker arm body 1, a bolt 2 is installed through the rocker arm body 1, and a nut 3 is installed on the bolt 2;

[0022] A locking mechanism for locking the nut 3 so that it does not rotate, a cylinder 4 is fixed on the bolt 2, the cylinder 4 and the bolt 2 are integrally formed, and the outer diameter of the cylinder 4 is smaller than the outer diameter of the bolt 2;

[0023] The cylinder 4 is sleeved with a movably arranged and lockable connecting ring 5, and a locking pin 6 is penetrated through the connecting ring 5 and slidably arranged therewith. The outer wall of the cylinder 4 is provided with a plurality of slots 13, and the locking pin 6 is slidably connected in the slots 13. A first spring 11 is fixed between the locking pin 6 and the connecting ring 5. When the locking pin 6 is inserted into the slots 13, the first spring 11 is in a stretched state at this time; the locking pin 6 can lock the connecting ring 5 by being inserted into any of the slots 13;

[0024] A limit ring 9 driven downward and not rotating is installed at the bottom of the connecting ring 5, a fixing ring 7 is fixed at the bottom of the connecting ring 5, a second spring 10 is fixed at the bottom of the fixing ring 7, and the second spring 10 is fixedly connected to the upper end of the limit ring 9. When the connecting ring 5 is locked, the positions of the connecting ring 5 and the fixing ring 7 are fixed, and the second spring 10 is compressed, thereby generating downward pressure on the limit ring 9;

[0025] A plurality of locking grooves 8 are provided on the nut 3, and the plurality of locking grooves 8 are distributed in a circular array at the upper end of the nut 3. A plurality of locking rods 12 are fixed at the bottom of the limiting ring 9, and the plurality of locking rods 12 are distributed in a circular array, and the circumference of the locking rods 12 is vertically overlapped with the circumference of the locking groove 8; the locking rods 12 are inserted into the locking groove 8 to lock the nut 3 so that it will not rotate relative to the bolt 2. Since the connecting ring 5 is locked and the limiting ring 9 has downward pressure and causes the locking rods 12 to be inserted into the locking groove 8, the nut 3 is limited to prevent loosening;

[0026] Among them, a plurality of locking grooves 8, locking rods 12 and slots 13 are provided, because the angle of the nut 3 changes after being fixed, and the locking grooves 8, locking rods 12 and slots 13 can be adaptively changed according to this situation;

[0027] When in use, the nut 3 is installed on the bolt 2, and then the limit ring 9, the second spring 10 and the fixing ring 7 are sleeved on the outside of the bolt 2. At this time, the staff manually pulls the locking pin 6 so that the locking pin 6 will not be inside the connecting ring 5, hindering the connecting ring 5 from being sleeved on the outside of the cylinder 4, until the locking rod 12 is inserted into the locking groove 8, and then the connecting ring 5 continues to move downward. The downward movement of the connecting ring 5 drives the fixing ring 7 to move downward and squeezes the second spring 10 until the locking pin 6 is inserted into the slot 13, thus completing the locking installation and effectively preventing the nut 3 from loosening.

[0028] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. Anti-loosening engine valve brake rocker arm assembly, characterized in that: include: A rocker arm body (1), wherein a bolt (2) is installed through the rocker arm body (1), and a nut (3) is installed on the bolt (2); A locking mechanism for locking a nut (3) so that it cannot rotate, wherein a cylinder (4) is fixed on the bolt (2), a connecting ring (5) which is movably arranged and can be locked is sleeved on the cylinder (4), a limiting ring (9) which is driven downward and cannot rotate is installed at the bottom of the connecting ring (5), a plurality of locking grooves (8) are provided on the nut (3), a plurality of locking rods (12) are fixed at the bottom of the limiting ring (9), and the locking rods (12) are inserted into the locking grooves (8) to lock the nut (3) so that it cannot rotate relative to the bolt (2).

2. The anti-loosening engine valve brake rocker arm assembly according to claim 1, characterized in that: in: The connecting ring (5) is penetrated by a locking pin (6) slidably arranged thereon, the outer wall of the cylinder (4) is provided with a plurality of slots (13), the locking pin (6) is slidably connected in the slots (13), and a first spring (11) is fixed between the locking pin (6) and the connecting ring (5).

3. The anti-loosening engine valve brake rocker arm assembly according to claim 1, characterized in that: in: A fixing ring (7) is fixed to the bottom of the connecting ring (5), a second spring (10) is fixed to the bottom of the fixing ring (7), and the second spring (10) is fixedly connected to the upper end of the limiting ring (9).

4. The anti-loosening engine valve brake rocker arm assembly according to claim 1, characterized in that: in: The plurality of locking grooves (8) are distributed in a ring array at the upper end of the nut (3).

5. The anti-loosening engine valve brake rocker arm assembly according to claim 1, characterized in that: in: The cylinder (4) and the bolt (2) are integrally formed, and the outer diameter of the cylinder (4) is smaller than the outer diameter of the bolt (2).

6. The anti-loosening engine valve brake rocker arm assembly according to claim 1, characterized in that: in: The plurality of locking rods (12) are distributed in a ring array.

Images