Locking air cylinder for wheel dynamic balancing machine

Abstract

The invention discloses a locking cylinder for a wheel dynamic balancing machine and relates to the technical field of automobile maintenance. The wheel balancing machine aims to solve the problems that according to an existing wheel balancing machine, a split nut on a transmission shaft is used for fixing a wheel, use is inconvenient, and then the working efficiency is low. A locking input end of a wheel balancing machine transmission assembly is connected with an output end of a double-layer-barrel single-acting air cylinder, an inflation assembly is arranged on a base of the double-layer-barrel single-acting air cylinder, and the wheel balancing machine transmission assembly, the double-layer-barrel single-acting air cylinder and the inflation assembly are coaxially arranged. Compared with a split nut on a transmission shaft in an existing wheel balancing machine, the locking air cylinder of the structure fixes the wheel in an air cylinder telescopic mode, an operator only needs to control opening of an air path, the wheel can be fixed to the transmission shaft in the wheel balancing machine, use is convenient, and therefore work efficiency is improved. The invention is suitable for the wheel dynamic balancing machine.

Description

Technical Field

[0001] The invention relates to the technical field of automobile maintenance, and in particular to a locking cylinder for a wheel dynamic balancing machine. Background Art

[0002] The wheel balancing machine measures the imbalance of the wheel by analyzing the amplitude and phase of the mechanical vibration generated by the rotation of the wheel. The sensor measures the mechanical vibration in terms of movement, force or pressure. The sensor converts the collected measurement results into an electrical signal. The wheel balancing machine indicates to the user the weight and position of the balancing object fixed on the wheel hub. At present, the wheel balancing machine requires the wheel to be manually mounted on the drive shaft of the wheel balancing machine, and the drive shaft contains a split nut. The split nut on the drive shaft of the wheel balancing machine needs to be manually tightened to securely mount the wheel on the drive shaft before the wheel balancing operation can be performed.

[0003] In summary, the existing wheel dynamic balancing machine uses the split nut on the transmission shaft to fix the wheel, which leads to inconvenience in use and further leads to the problem of low working efficiency. Summary of the invention

[0004] The present invention proposes a locking cylinder for a wheel dynamic balancing machine to solve the problem that the existing wheel dynamic balancing machine uses a split nut on a transmission shaft to fix the wheel, which causes inconvenience in use and further leads to low working efficiency.

[0005] A locking cylinder for a wheel dynamic balancing machine of the present invention comprises a wheel dynamic balancing machine transmission assembly 1, a double-layered single-acting cylinder 2 and an air charging assembly 3;

[0006] The locking input end of the wheel balancing machine transmission assembly 1 is connected to the output end of the double-layered cylinder single-acting cylinder 2. The base of the double-layered cylinder single-acting cylinder 2 is provided with an air charging assembly 3. The wheel balancing machine transmission assembly 1, the double-layered cylinder single-acting cylinder 2 and the air charging assembly 3 are coaxially arranged. During the wheel dynamic balancing operation, the double-layered cylinder single-acting cylinder 2 rotates with the wheel balancing machine transmission assembly 1. The coaxial arrangement can ensure that the double-layered cylinder single-acting cylinder 2 will not bring additional imbalance to the tested wheel.

[0007] The double-layer single-acting cylinder 2 comprises a front end cover 2-1, a rear end cover A2-2, a rear end cover B2-3, an outer cylinder 2-4, an inner cylinder 2-5, a tightening screw 2-6, a nut 2-7, an L-shaped vent hole 2-10, a cylinder rod 2-11, a one-way air inlet valve 2-12, a return spring 2-17 and a piston 2-22;

[0008] Two concentric annular grooves are evenly processed on the end surface of the front end cover 2-1, one end of the inner tube 2-5 is inserted into the inner annular groove on the end surface of the front end cover 2-1, and an outer tube 2-4 is sleeved on the outer surface of the inner tube 2-5, and one end of the outer tube 2-4 is inserted into the outer annular groove on the end surface of the front end cover 2-1. Two concentric annular grooves are also evenly processed on the end surface of the rear end cover A2-2, and the other end of the inner tube 2-5 is inserted into the inner annular groove on the end surface of the rear end cover A2-2, and the other end of the outer tube 2-4 is inserted into the outer annular groove on the end surface of the rear end cover A2-2. A rear end cover B2-3 is provided on the other end surface of the rear end cover A2-2, and a stepped hole is processed at the center of one end of the rear end cover B2-3, and a one-way air intake valve 2-12 is provided inside the stepped hole. , and the front end cover 2-1 is connected with the rear end cover A2-2 by at least two tightening screws 2-6, each tightening screw 2-6 end is provided with a nut 2-7, an L-shaped vent hole 2-10 is processed on the circumferential outer surface of the rear end cover A2-2, a piston 2-22 is provided inside the inner cylinder 2-5, one end of the piston 2-22 is connected with one end of the cylinder rod 2-11 at the center, the other end of the cylinder rod 2-11 passes through the front end cover 2-1, a locking thread section 2-25 is processed on the outer surface of the other end of the cylinder rod 2-11, a boss is processed on the other end of the piston 2-22, a return spring 2-17 is provided between the boss at the other end of the piston 2-22 and the end surface of the rear end cover A2-2, and the end of the return spring 2-17 is sleeved on the boss of the piston 2-22;

[0009] Furthermore, a sealing gasket A2-24 is embedded in the inner annular groove of the front end cover 2-1, and a sealing gasket B2-13 is embedded in the outer annular groove of the front end cover 2-1;

[0010] Furthermore, a sealing gasket C2-14 is embedded in the inner annular groove of the rear end cover A2-2, and a sealing gasket D2-15 is embedded in the outer annular groove of the rear end cover A2-2;

[0011] Furthermore, an annular groove is machined on one end surface of the rear end cover B2-3, a sealing gasket E2-16 is embedded in the annular groove, an annular protrusion is machined on the other end surface of the rear end cover A2-2, and the annular protrusion of the rear end cover A2-2 is matched and connected with the annular groove of the rear end cover B2-3;

[0012] Furthermore, a sealing gasket E2-23 is embedded in the inner bottom surface of the stepped hole at one end of the rear end cover B2-3;

[0013] Furthermore, the one-way air intake valve 2-12 includes a valve needle 2-12-1, a sealing gasket F2-12-2, an I-shaped plate 2-12-3 and a valve needle spring 2-12-4;

[0014] The valve needle 2-12-1, the valve needle spring 2-12-4 and the I-shaped plate 2-12-3 are coaxially arranged from left to right, and the valve needle spring 2-12-4 is sleeved on the valve needle 2-12-1, and one end of the valve needle 2-12-1 is sleeved with a sealing gasket F2-12-2;

[0015] Furthermore, the end of the cylinder rod 2-11 in the double-layered single-acting cylinder 2 is connected to the input end of the locking assembly of the wheel dynamic balancing machine transmission assembly 1;

[0016] Furthermore, a vent hole A2-8 is processed on one side of the inner cylinder 2-5 close to the front end cover 2-1, and a vent hole B2-9 is processed on the rear end cover A2-2 at the fitting portion between the inner cylinder 2-5 and the outer cylinder 2-4;

[0017] Furthermore, the inflatable component 3 includes an inflatable component inner ring 3-1, a bearing 3-2, an inflatable component outer ring 3-3, an inflatable cylinder 3-4, a sealing ring 3-6 and an annular sealing gasket 3-5;

[0018] The outer ring 3-3 of the inflatable component is cylindrical with a center hole. The outer ring 3-3 of the inflatable component is sleeved on one end of the inner ring 3-1 of the inflatable component, and a bearing 3-2 is provided between the inner wall of the outer ring 3-3 of the inflatable component and the outer surface of the inner ring 3-1 of the inflatable component. The other end of the outer ring 3-3 of the inflatable component is provided with an inflatable cylinder 3-4, and the outer ring 3-3 of the inflatable component is coaxially arranged with the inflatable cylinder 3-4. The inner ring 3-1 of the inflatable component is provided with an inner ring center hole, and a sealing ring 3-6 is embedded in the inner center hole of the inner ring. An annular groove is processed on the other end surface of the inner ring 3-1 of the inflatable component, and an annular sealing gasket 3-5 is provided inside the annular groove;

[0019] Furthermore, the bottom end face of the inflatable cylinder rod 3-4-1 of the inflatable cylinder 3-4 is processed with a U-shaped groove 3-4-3, the center of the end face of the inflatable cylinder rod 3-4-1 is processed with an inflatable airway 3-4-2 along the length direction, and the center of the other end face of the inflatable cylinder rod 3-4-1 is processed with a threaded hole, and an inflatable air nozzle 3-4-4 is arranged inside the threaded hole;

[0020] Furthermore, when in use, the inflation cylinder rod 3-4-1 is in an extended state, so that it passes through the sealing ring 3-6, and can push open the valve needle 2-12-1 of the one-way air inlet valve 2-12, so that the inflation nozzle 3-4-4 is connected to the air cavity B2-19 through the inflation airway 3-4-2 and the U-shaped groove 3-4-3, and is isolated from the atmosphere by the sealing ring 3-6 and the annular sealing gasket 3-5. When the inflation nozzle 3-4-4 is connected to the high-pressure gas, the high-pressure gas passes through the one-way air inlet valve 2-12, the air cavity B2-19, the vent hole B2-9, the air cavity A2-18, The vent hole A2-8 enters the air cavity D2-21. On the other side of the piston 2-22, the L-shaped vent hole 2-10 can connect the air cavity C2-20 with the atmosphere. The air cavity C2-20 is always at normal pressure. At this time, the front side of the piston 2-22, the air cavity D2-21 contains high-pressure gas, and the rear side of the piston 2-22, the air cavity C2-20 contains normal-pressure gas. The air pressure difference on both sides of the piston 2-22 overcomes the pressure of the return spring 2-17, pushing the piston 2-22 to move backward, and the cylinder rod 2-11 retracts, driving the locking assembly pull rod 1-2 to lock the wheel;

[0021] When the inflation cylinder rod 3-4-1 in the inflation assembly 3 pushes open the valve needle 2-12-1 of the one-way air inlet valve 2-12, the inflation nozzle 3-4-4 is connected to the normal pressure gas, and the air cavity D2-21 is also connected to the normal pressure gas. The air pressure of the air cavity D2-21 and the air cavity C2-20 on the front and rear sides of the piston 2-22 is the same. The piston 2-22 moves forward under the action of the return spring 2-17, and the cylinder rod 2-11 extends, driving the locking assembly pull rod 1-2 to release the wheel;

[0022] After completing the locking or releasing action of the wheel, the inflation cylinder rod 3-4-1 is in a retracted state, which is located at the rear end of the sealing ring 3-6. The valve needle 2-12-1 of the one-way air intake valve 2-12 returns to its original position under the action of the valve needle spring 2-12-4. Under the action of the sealing gasket F2-12-2, the air cavity B2-19 is isolated from the atmosphere, which can maintain a high pressure or normal pressure state, so that the wheel can be locked or released. When the wheel is dynamically balanced, the pulley of the transmission component must drive the locking cylinder 2 to rotate together, and the inflation cylinder 3-4 needs to be connected to the air pipe, which cannot rotate. Through the bearing 3-2, the outer ring 3-3 of the inflation component and the inflation cylinder 3-4 can be kept fixed, and the inner ring 3-1 of the inflation component and the double-layer single-acting cylinder 2 connected thereto can rotate freely.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] The present invention overcomes the shortcomings of the prior art. When the cylinder rod is retracted, the wheel is locked to the drive shaft of the balancing machine. After the wheel is locked, the drive shaft is rotated to measure the dynamic balance of the wheel. The locking cylinder needs to rotate with the drive shaft to ensure that the wheel is in a locked state. This involves two problems. One is to ensure the pressure in the cylinder to ensure the locking state of the wheel, and the other is to ensure that the cylinder can rotate freely. In the device, a one-way air intake valve and a Inflation assembly, the one-way air intake valve can maintain pressure in the cylinder after the inflation assembly is separated from the locking cylinder. The locking cylinder is provided with an inner cylinder and an outer cylinder, and the inner cylinder and the outer cylinder form a closed air cavity A. The inner cylinder is provided with a vent hole A near the front end cover (the front end of the cylinder piston). The rear end cover is composed of a rear end cover A and a rear end cover B, and the rear end cover A and the rear end cover B can form a closed air cavity B. The rear end cover A is provided with a vent hole B, and the vent hole B connects the air cavity A and the air cavity B. A one-way air intake valve is provided in the center of the rear end cover B. The rear end cover A is provided with an L-shaped air hole, one end of the L-shaped air hole is connected to the atmosphere, and the other end is connected to the rear end of the cylinder piston, so that the rear end of the piston is always connected to the atmosphere, and a return spring is provided between the rear end of the piston and the rear end cover A; when the inflation component connects the one-way air intake valve to high-pressure air, the high-pressure air enters the front end of the cylinder piston through the air cavity B, the air hole B, the air cavity A, and the air hole A, so that the piston moves backward, the cylinder rod retracts, and the wheel is locked. When the inflation component opens the valve needle of the one-way air intake valve to connect to the normal pressure air, the air pressure at the front and rear ends of the cylinder piston is equal, the cylinder piston moves forward under the action of the spring, the cylinder rod extends, and the wheel is loosened; compared with the opening and closing nut on the transmission shaft in the existing wheel dynamic balancing machine, the locking cylinder of this structure adopts the cylinder telescopic method to fix the wheel. The operator only needs to control the opening of the air circuit to fix the wheel on the transmission shaft in the wheel dynamic balancing machine, which is more convenient to use, thereby improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a front view of a locking cylinder for a wheel dynamic balancing machine according to the present invention;

[0026] Figure 2 It is a front view of a double-layer single-acting cylinder in a locking cylinder for a wheel dynamic balancing machine described in the present invention;

[0027] Figure 3 yes Figure 2 An AA cross-sectional view of a double-layer single-acting cylinder in a locking cylinder for a wheel dynamic balancing machine;

[0028] Figure 4 It is a main cross-sectional view of an air charging component in a locking cylinder for a wheel dynamic balancing machine described in the present invention. DETAILED DESCRIPTION

[0029] Specific implementation method 1: Combination Figures 1 to 3 The present embodiment is described as follows. A locking cylinder for a wheel balancing machine described in the present embodiment comprises a wheel balancing machine transmission assembly 1, a double-layered single-acting cylinder 2 and an air charging assembly 3;

[0030] The pulley end of the wheel balancing machine transmission assembly 1 is connected to the front end surface of the double-drum single-acting cylinder 2, and the base of the double-drum single-acting cylinder 2 is provided with an air charging assembly 3, and the wheel balancing machine transmission assembly 1, the double-drum single-acting cylinder 2 and the air charging assembly 3 are coaxially arranged;

[0031] The double-layer single-acting cylinder 2 comprises a front end cover 2-1, a rear end cover A2-2, a rear end cover B2-3, an outer cylinder 2-4, an inner cylinder 2-5, a tightening screw 2-6, a nut 2-7, an L-shaped vent hole 2-10, a cylinder rod 2-11, a one-way air inlet valve 2-12, a return spring 2-17 and a piston 2-22;

[0032] Two concentric annular grooves are evenly processed on the end surface of the front end cover 2-1, one end of the inner tube 2-5 is inserted into the inner annular groove on the end surface of the front end cover 2-1, and an outer tube 2-4 is sleeved on the outer surface of the inner tube 2-5, and one end of the outer tube 2-4 is inserted into the outer annular groove on the end surface of the front end cover 2-1. Two concentric annular grooves are also evenly processed on the end surface of the rear end cover A2-2, and the other end of the inner tube 2-5 is inserted into the inner annular groove on the end surface of the rear end cover A2-2, and the other end of the outer tube 2-4 is inserted into the outer annular groove on the end surface of the rear end cover A2-2. A rear end cover B2-3 is provided on the other end surface of the rear end cover A2-2, and a stepped hole is processed at the center of one end of the rear end cover B2-3, and a one-way air intake valve 2-12 is provided inside the stepped hole. , and the front end cover 2-1 is connected with the rear end cover A2-2 by at least two tightening screws 2-6, each tightening screw 2-6 end is provided with a nut 2-7, an L-shaped vent hole 2-10 is processed on the circumferential outer surface of the rear end cover A2-2, a piston 2-22 is provided inside the inner cylinder 2-5, one end of the piston 2-22 is connected with one end of the cylinder rod 2-11 at the center, the other end of the cylinder rod 2-11 passes through the front end cover 2-1, a locking thread section 2-25 is processed on the outer surface of the other end of the cylinder rod 2-11, a boss is processed on the other end of the piston 2-22, a return spring 2-17 is provided between the boss at the other end of the piston 2-22 and the end surface of the rear end cover A2-2, and the end of the return spring 2-17 is sleeved on the boss of the piston 2-22;

[0033] In this specific embodiment, when in use, the inflation cylinder rod 3-4-1 is in an extended state, so that it passes through the sealing ring 3-6 and can push open the valve needle 2-12-1 of the one-way air inlet valve 2-12, so that the inflation nozzle 3-4-4 is connected to the air cavity B2-19 through the inflation airway 3-4-2 and the U-shaped groove 3-4-3, and is isolated from the atmosphere by the sealing ring 3-6 and the annular sealing gasket 3-5. When the inflation nozzle 3-4-4 is connected to high-pressure gas, the high-pressure gas enters the air cavity D2-21 through the one-way air inlet valve 2-12, the air cavity B2-19, the air vent B2-9, the air cavity A2-18, and the air vent A2-8, pushing the piston 2-22 to move backward, and the cylinder rod 2-11 retracts, driving the locking assembly pull rod 1-2 to lock the wheel;

[0034] When the inflation cylinder rod 3-4-1 in the inflation assembly 3 pushes open the valve needle 2-12-1 of the one-way air inlet valve 2-12, the inflation nozzle 3-4-4 is connected to the normal pressure gas, and the air cavity D2-21 is also connected to the normal pressure gas. The air pressure of the air cavity A2-18 and the air cavity D2-21 on the front and rear sides of the piston 2-22 is the same. The piston 2-22 moves forward under the action of the return spring 2-17, and the cylinder rod 2-11 extends, driving the locking assembly pull rod 1-2 to release the wheel;

[0035] After completing the locking or releasing action of the wheel, the inflation cylinder rod 3-4-1 is in a retracted state, which is located at the rear end of the sealing ring 3-6. The valve needle 2-12-1 of the one-way air intake valve 2-12 returns to its original position under the action of the valve needle spring 2-12-4. Under the action of the sealing gasket F2-12-2, the air cavity B2-19 is isolated from the atmosphere, which can maintain a high pressure or normal pressure state, so that the wheel can be locked or released. When the wheel is dynamically balanced, the pulley of the transmission component must drive the locking cylinder 2 to rotate together, and the inflation cylinder 3-4 needs to be connected to the air pipe, which cannot rotate. Through the bearing 3-2, the outer ring 3-3 of the inflation component and the inflation cylinder 3-4 can be kept fixed, and the inner ring 3-1 of the inflation component and the double-layer single-acting cylinder 2 connected thereto can rotate freely.

[0036] Specific implementation method 2: Combination Figures 1 to 3 To describe this embodiment, this embodiment is a further limitation of the locking cylinder described in the specific embodiment one. This embodiment describes a locking cylinder for a wheel dynamic balancing machine, wherein a sealing gasket A2-24 is embedded in the inner annular groove of the front end cover 2-1, and a sealing gasket B2-13 is embedded in the outer annular groove of the front end cover 2-1.

[0037] Specific implementation method three: Combination Figures 1 to 3This embodiment is described. This embodiment is a further limitation of the locking cylinder described in the first embodiment. In the locking cylinder for a wheel dynamic balancing machine described in this embodiment, a sealing gasket C2-14 is embedded in the inner annular groove of the rear end cover A2-2, and a sealing gasket D2-15 is embedded in the outer annular groove of the rear end cover A2-2.

[0038] In this specific embodiment, a sealing gasket C2-14 is embedded in the inner annular groove of the rear end cover A2-2, and a sealing gasket D2-15 is embedded in the outer annular groove of the rear end cover A2-2, so as to improve the air tightness of the outer cylinder 2-4 and the inner cylinder 2-5.

[0039] Specific implementation method four: Combination Figures 1 to 3 To explain this embodiment, this embodiment is a further limitation of the locking cylinder described in the specific embodiment one. This embodiment describes a locking cylinder for a wheel dynamic balancing machine, wherein one end face of the rear end cover B2-3 is processed with an annular groove, a sealing gasket E2-16 is embedded in the annular groove, and the other end face of the rear end cover A2-2 is processed with an annular protrusion, and the annular protrusion of the rear end cover A2-2 is matched and connected with the annular groove of the rear end cover B2-3.

[0040] Specific implementation method five: Combination Figures 1 to 3 To describe this embodiment, this embodiment is a further limitation of the locking cylinder described in the specific embodiment four. This embodiment describes a locking cylinder for a wheel balancing machine, and a sealing gasket E2-23 is embedded in the inner bottom surface of the stepped hole at one end of the rear end cover B2-3.

[0041] Specific implementation method six: Combination Figures 1 to 3 This embodiment is described. This embodiment is a further limitation of the locking cylinder described in the specific embodiment 1. In this embodiment, a locking cylinder for a wheel dynamic balancing machine is described. The one-way air intake valve 2-12 includes a valve needle 2-12-1, a sealing gasket F2-12-2, an I-shaped plate 2-12-3 and a valve needle spring 2-12-4.

[0042] The valve needle 2-12-1, the valve needle spring 2-12-4 and the I-shaped plate 2-12-3 are coaxially arranged from left to right, and the valve needle spring 2-12-4 is sleeved on the valve needle 2-12-1, and one end of the valve needle 2-12-1 is sleeved with a sealing gasket F2-12-2.

[0043] Specific implementation method seven: Combination Figures 1 to 3 To explain this embodiment, this embodiment is a further limitation of the locking cylinder described in the specific embodiment one. This embodiment describes a locking cylinder for a wheel balancing machine, and the end of the cylinder rod 2-11 in the double-layer single-acting cylinder 2 is connected to the locking assembly input end of the wheel balancing machine transmission assembly 1.

[0044] Specific implementation method eight: Combination Figures 1 to 3 To explain this embodiment, this embodiment is a further limitation of the locking cylinder described in the second embodiment. This embodiment is a locking cylinder for a wheel balancing machine, wherein the inner cylinder 2-5 is processed with a vent hole A2-8 on one side close to the front end cover 2-1, and the rear end cover A2-2 is processed with a vent hole B2-9 on the fitting portion between the inner cylinder 2-5 and the outer cylinder 2-4.

[0045] Specific implementation method nine: Combination Figures 1 to 4 This embodiment is described. This embodiment is a further limitation of the locking cylinder described in the first embodiment. In this embodiment, a locking cylinder for a wheel dynamic balancing machine is described. The inflatable component 3 includes an inflatable component inner ring 3-1, a bearing 3-2, an inflatable component outer ring 3-3, an inflatable cylinder 3-4, a sealing ring 3-6 and an annular sealing gasket 3-5.

[0046] The outer ring 3-3 of the inflatable component is cylindrical with a center hole, the outer ring 3-3 of the inflatable component is sleeved on one end of the inner ring 3-1 of the inflatable component, and a bearing 3-2 is provided between the inner wall of the outer ring 3-3 of the inflatable component and the outer surface of the inner ring 3-1 of the inflatable component, the other end of the outer ring 3-3 of the inflatable component is provided with an inflatable cylinder 3-4, and the outer ring 3-3 of the inflatable component is coaxially arranged with the inflatable cylinder 3-4, the inner ring 3-1 of the inflatable component is provided with an inner ring center hole, the inner part of the inner ring center hole is embedded with a sealing ring 3-6, and the other end face of the inner ring 3-1 of the inflatable component is processed with an annular groove, and the inner part of the annular groove is provided with an annular sealing gasket 3-5.

[0047] Specific implementation method ten: Combination Figures 1 to 4 The present embodiment is described as a further limitation of the locking cylinder described in the ninth embodiment. The locking cylinder for a wheel balancing machine described in the present embodiment has a U-shaped groove 3-4-3 processed on the bottom end face of the inflation cylinder rod 3-4-1 of the inflation cylinder 3-4, an inflation air duct 3-4-2 is processed along the length direction at the center of the end face of the inflation cylinder rod 3-4-1, and a threaded hole is processed at the center of the other end face of the inflation cylinder rod 3-4-1, and an inflation nozzle 3-4-4 is provided inside the threaded hole.

[0048] How it works

[0049] When in use, the inflation cylinder rod 3-4-1 is in the extended state, so that it passes through the sealing ring 3-6 and can push open the valve needle 2-12-1 of the one-way air inlet valve 2-12, so that the inflation nozzle 3-4-4 is connected to the air cavity B2-19 through the inflation airway 3-4-2 and the U-shaped groove 3-4-3, and is isolated from the atmosphere by the sealing ring 3-6 and the annular sealing gasket 3-5. When the inflation nozzle 3-4-4 is connected to the high-pressure gas, the high-pressure gas passes through the one-way air inlet valve 2-12, the air cavity B2-19, the vent hole B2-9, the air cavity A2-18, the vent hole B2-19, the air cavity B2-20, the vent hole B2-21, the vent hole B2-22, the air cavity B2-23, the vent hole B2-24, the vent hole B2-25, the vent hole B2-26, the vent hole B2-27, the vent hole B2-28, the vent hole B2-30, the vent hole B2-31, the vent hole B2-32, the vent hole B2-33, the vent hole B2-34, the vent hole B2-35, the vent hole B2-36, the vent hole B2-37, the vent hole B2-38, the vent hole B2-39, the vent hole B2-40, the vent hole B2-41, the vent hole B2-42, the vent hole B2-43, the vent hole B2-44, the vent hole B2-45, the vent hole B2-46, the vent hole B2-47, the vent hole B2-48, the vent hole B2-49, the vent hole B2-50, the Hole A2-8 enters into the air cavity D2-21. On the other side of the piston 2-22, the L-shaped vent hole 2-10 can connect the air cavity C2-20 with the atmosphere. The air cavity C2-20 is always at normal pressure. At this time, the front side of the piston 2-22, the air cavity D2-21 contains high-pressure gas, and the rear side of the piston 2-22, the air cavity C2-20 contains normal-pressure gas. The air pressure difference on both sides of the piston 2-22 overcomes the pressure of the return spring 2-17, pushing the piston 2-22 to move backward, and the cylinder rod 2-11 retracts, driving the locking assembly pull rod 1-2 to lock the wheel;

[0050] When the inflation cylinder rod 3-4-1 in the inflation assembly 3 pushes open the valve needle 2-12-1 of the one-way air inlet valve 2-12, the inflation nozzle 3-4-4 is connected to the normal pressure gas, and the air cavity D2-21 is also connected to the normal pressure gas. The air pressure of the air cavity D2-21 and the air cavity C2-20 on the front and rear sides of the piston 2-22 is the same. The piston 2-22 moves forward under the action of the return spring 2-17, and the cylinder rod 2-11 extends, driving the locking assembly pull rod 1-2 to release the wheel;

[0051] After completing the locking or releasing action of the wheel, the inflation cylinder rod 3-4-1 is in a retracted state, which is located at the rear end of the sealing ring 3-6. The valve needle 2-12-1 of the one-way air intake valve 2-12 returns to its original position under the action of the valve needle spring 2-12-4. Under the action of the sealing gasket F2-12-2, the air cavity B2-19 is isolated from the atmosphere, which can maintain a high pressure or normal pressure state, so that the wheel can be locked or released. When the wheel is dynamically balanced, the pulley of the transmission component must drive the locking cylinder 2 to rotate together, and the inflation cylinder 3-4 needs to be connected to the air pipe, which cannot rotate. Through the bearing 3-2, the outer ring 3-3 of the inflation component and the inflation cylinder 3-4 can be kept fixed, and the inner ring 3-1 of the inflation component and the double-layer single-acting cylinder 2 connected thereto can rotate freely.

Claims

1. A locking cylinder for a wheel dynamic balancing machine, characterized in that: It comprises a wheel dynamic balancing machine transmission assembly (1), a double-drum single-acting cylinder (2) and an air charging assembly (3); The pulley end of the wheel dynamic balancing machine transmission component (1) is connected to the front end surface of the double-drum single-acting cylinder (2), and an air charging component (3) is arranged on the base of the double-drum single-acting cylinder (2), and the wheel dynamic balancing machine transmission component (1), the double-drum single-acting cylinder (2) and the air charging component (3) are coaxially arranged; The double-drum single-acting cylinder (2) comprises a front end cover (2-1), a rear end cover A (2-2), a rear end cover B (2-3), an outer cylinder (2-4), an inner cylinder (2-5), a tensioning screw (2-6), a nut (2-7), an L-shaped vent hole (2-10), a cylinder rod (2-11), a one-way air intake valve (2-12), a return spring (2-17) and a piston (2-22); Two concentric annular grooves are evenly processed on the end surface of the front end cover (2-1), one end of the inner cylinder (2-5) is inserted into the inner annular groove on the end surface of the front end cover (2-1), an outer cylinder (2-4) is sleeved on the outer surface of the inner cylinder (2-5), one end of the outer cylinder (2-4) is inserted into the outer annular groove on the end surface of the front end cover (2-1), two concentric annular grooves are evenly processed on the end surface of the rear end cover A (2-2), the other end of the inner cylinder (2-5) is inserted into the inner annular groove on the end surface of the rear end cover A (2-2), the other end of the outer cylinder (2-4) is inserted into the outer annular groove on the end surface of the rear end cover A (2-2), a rear end cover B (2-3) is provided on the other end surface of the rear end cover A (2-2), a stepped hole is processed at the center of one end of the rear end cover B (2-3), a one-way air intake valve (2-12) is provided inside the stepped hole, and the front end cover ( The rear end cover A (2-2) is connected to the front end cover A (2-1) through at least two tensioning screws (2-6), and a nut (2-7) is disposed on the end of each tensioning screw (2-6). An L-shaped vent hole (2-10) is processed on the circumferential outer surface of the rear end cover A (2-2). A piston (2-22) is disposed inside the inner tube (2-5). The center of one end of the piston (2-22) is connected to one end of the cylinder rod (2-11). The other end of the cylinder rod (2-11) passes through the front end cover (2-1). A locking thread section (2-25) is processed on the outer surface of the other end of the cylinder rod (2-11). A boss is processed on the other end of the piston (2-22). A return spring (2-17) is disposed between the boss at the other end of the piston (2-22) and the end surface of the rear end cover A (2-2), and the end of the return spring (2-17) is sleeved on the boss of the piston (2-22).

2. The locking cylinder for a wheel dynamic balancing machine according to claim 1, characterized in that: A sealing gasket A (2-24) is embedded in the inner annular groove of the front end cover (2-1), and a sealing gasket B (2-13) is embedded in the outer annular groove of the front end cover (2-1).

3. The locking cylinder for a wheel dynamic balancing machine according to claim 1, characterized in that: A sealing gasket C (2-14) is embedded in the inner annular groove of the rear end cover A (2-2), and a sealing gasket D (2-15) is embedded in the outer annular groove of the rear end cover A (2-2).

4. The locking cylinder for a wheel dynamic balancing machine according to claim 1, characterized in that: An annular groove is machined on one end face of the rear end cover B (2-3), and a sealing gasket E (2-16) is embedded inside the annular groove. An annular protrusion is machined on the other end face of the rear end cover A (2-2), and the annular protrusion of the rear end cover A (2-2) is matched and connected with the annular groove of the rear end cover B (2-3).

5. The locking cylinder for a wheel dynamic balancing machine according to claim 4, characterized in that: A sealing gasket E (2-23) is embedded in the inner bottom surface of the stepped hole at one end of the rear end cover B (2-3).

6. The locking cylinder for a wheel dynamic balancing machine according to claim 1, characterized in that: The one-way air intake valve (2-12) comprises a valve needle (2-12-1), a sealing gasket F (2-12-2), an I-shaped plate (2-12-3) and a valve needle spring (2-12-4); The valve needle (2-12-1), the valve needle spring (2-12-4) and the I-shaped plate (2-12-3) are coaxially arranged in sequence from left to right, and the valve needle spring (2-12-4) is sleeved on the valve needle (2-12-1), and one end of the valve needle (2-12-1) is sleeved with a sealing gasket F (2-12-2).

7. The locking cylinder for a wheel dynamic balancing machine according to claim 1, characterized in that: The end of the cylinder rod (2-11) in the double-drum single-acting cylinder (2) is connected to the input end of the locking assembly of the wheel dynamic balancing machine transmission assembly (1).

8. The locking cylinder for a wheel dynamic balancing machine according to claim 2, characterized in that: A vent hole A (2-8) is processed on one side of the inner cylinder (2-5) close to the front end cover (2-1), and a vent hole B (2-9) is processed on the rear end cover A (2-2) at the fitting portion between the inner cylinder (2-5) and the outer cylinder (2-4).

9. The locking cylinder for a wheel dynamic balancing machine according to claim 1, characterized in that: The inflatable component (3) comprises an inflatable component inner ring (3-1), a bearing (3-2), an inflatable component outer ring (3-3), an inflatable cylinder (3-4), a sealing ring (3-6) and an annular sealing gasket (3-5); The outer ring (3-3) of the inflatable component is in the shape of a cylinder with one end open and the other end closed; the outer ring (3-3) of the inflatable component is sleeved on one end of the inner ring (3-1) of the inflatable component, and a bearing (3-2) is provided between the inner wall of the outer ring (3-3) of the inflatable component and the outer surface of the inner ring (3-1) of the inflatable component; the other end of the outer ring (3-3) of the inflatable component is provided with an inflatable cylinder (3-4), and the outer ring (3-3) of the inflatable component and the inflatable cylinder (3-4) are coaxially arranged; the inner ring (3-1) of the inflatable component is provided with an inner ring center hole, and a sealing ring (3-6) is embedded in the inner ring center hole; the other end surface of the inner ring (3-1) of the inflatable component is processed with an annular groove, and the inner surface of the annular groove is provided with an annular sealing gasket (3-5).

10. The locking cylinder for a wheel dynamic balancing machine according to claim 9, characterized in that: The bottom end face of the inflatable cylinder rod (3-4-1) of the inflatable cylinder (3-4) is processed with a U-shaped groove (3-4-3), the center of the end face of the inflatable cylinder rod (3-4-1) is processed with an inflatable airway (3-4-2) along the length direction, and the center of the other end face of the inflatable cylinder rod (3-4-1) is processed with a threaded hole, and an inflatable air nozzle (3-4-4) is arranged inside the threaded hole.

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