Driving device actuator assembly tool

Abstract

The utility model belongs to the field of driving device actuators, and particularly relates to a driving device actuator assembly tool. A driving device actuator assembling tool comprises a ring expanding mandrel and a ring pushing device. The ring expanding mandrel is sleeved on the piston; the sealing ring is sleeved on the expanding ring mandrel; and the ring pushing device is sleeved on the ring expanding mandrel. The device is easy to operate and convenient to use, the sealing ring on the piston rod of the driving device is rapidly and efficiently assembled, and the production efficiency is greatly improved.

Description

Technical Field

[0001] This utility model belongs to the field of drive device actuators, and in particular relates to an assembly fixture for drive device actuators. Background Technology

[0002] CQ is a double-acting piston seal used in medium and heavy-duty hydraulic applications. Its unique design features a star-shaped ring on the PTFE slip ring to prevent internal leakage. The PTFE slip ring is a stable rectangle equipped with two O-rings. CQ is commonly used in hydraulic traveling devices, cranes, standard cylinders, and accumulators. The F3 type guide band is used in hydraulic cylinders, where the beveled A-type guide band is fitted into a pre-designed groove as an "open support," providing only support. All system pressure is applied to the seal. The piston rod of the drive unit has sealing rings, often using a combination seal (a combination of a fluororubber ring and a ring primarily made of PTFE). Currently, there are no suitable tooling options for installing these seals, causing significant inconvenience and impacting project timelines and production efficiency. Utility Model Content

[0003] The purpose of this invention is to provide a tooling for assembling actuators of a drive device. It is simple to operate, convenient to use, and can quickly and efficiently complete the assembly of the sealing ring on the piston rod of the drive device, greatly improving production efficiency.

[0004] To achieve the above-mentioned objectives of the utility model, the technical solution provided in this application is: a drive device actuator assembly fixture, including an expanding ring mandrel and a pusher ring; the expanding ring mandrel is fitted onto a piston; a sealing ring is fitted onto the expanding ring mandrel; and the pusher ring is fitted onto the expanding ring mandrel.

[0005] Furthermore, the expanding ring mandrel is composed of a frustum portion and a cylindrical portion; the large bottom surface of the frustum portion is provided with the cylindrical portion; the outer diameter of the large bottom surface of the frustum portion is equal to the outer diameter of the cylindrical portion.

[0006] Furthermore, the expander mandrel has an internal cavity; the cavity is sequentially composed of a first frustum, a first cylindrical portion, a second cylindrical portion, a second frustum, and a third cylindrical portion; the smaller base of the frustum of the expander mandrel has the first frustum; the end of the cylindrical portion away from the frustum of the expander mandrel has the third cylindrical portion; the diameter of the smaller base of the first frustum is equal to the diameter of the first cylinder; the diameter of the first cylindrical portion is smaller than the diameter of the second cylindrical portion; the diameter of the second cylindrical portion is equal to the diameter of the smaller base of the second frustum; the diameter of the larger base of the second frustum is equal to the diameter of the third cylindrical portion.

[0007] Furthermore, the expanding ring mandrel is used to fit over both ends of the piston; the frustum portion of the expanding ring mandrel is used to evenly open the sealing ring.

[0008] Furthermore, the size of the pusher ring matches the size of the expander ring mandrel; the pusher ring also includes a front end constriction for fitting the sealing ring, and the pusher ring is used to push the sealing ring along the expander ring mandrel into the sealing ring groove of the piston.

[0009] Furthermore, it also includes a shrink ring clamp, which is used to tighten the sealing ring; the shrink ring clamp includes an upper clamp and a lower clamp; both the upper and lower clamps are semi-circular clamps; the left and right ends of the upper and lower clamps are respectively provided with fixed connecting ears; the fixed connecting ears are provided with mounting bolt holes of the same size and concentricity; the upper and lower clamps are connected by bolts through the fixed connecting ears to form a full circular clamp; there are at least two shrink ring clamps.

[0010] Furthermore, it also includes an inlet ring, which is used to fix the guide band on the piston; the inlet ring is a hollow cylinder divided into four parts; the hollow shape of the inlet ring is consistent with the outer contour shape of the frustum; the outer edge of the hollow cylinder is chamfered.

[0011] Furthermore, the sealing ring is a CQ ring; the guide strip is an A-type with an angled cut.

[0012] The beneficial effects of this utility model are: this application is simple to operate, convenient to use, and can quickly and efficiently complete the assembly of the sealing ring on the piston rod of the drive device, which greatly improves production efficiency. Attached Figure Description

[0013] Figure 1 This is the main view of the inlet ring of this utility model;

[0014] Figure 2 This is a top view of the inlet ring of this utility model;

[0015] Figure 3 This is a schematic diagram of the structure of the expanding ring mandrel of this utility model;

[0016] Figure 4 This is a front view of the push ring device of this utility model;

[0017] Figure 5 This is a left view of the pusher ring of this utility model;

[0018] Figure 6 This is a front view of the locking clamp of this utility model;

[0019] Figure 7 This is a left view of the locking clamp of this utility model;

[0020] Figure 8This is a structural schematic diagram of the first step in using the ring expanding mandrel, ring pushing device, and ring shrinking clamp of this utility model.

[0021] Figure 9 This is a structural diagram illustrating step two of the use of the ring expanding mandrel, ring pushing device, and ring shrinking clamp of this utility model.

[0022] Figure 10 This is a structural diagram illustrating step three of the use of the expanding ring mandrel, the pushing ring device, and the shrinking ring clamp of this utility model.

[0023] Figure 11 This is a structural diagram illustrating step four of the use of the expanding ring mandrel, the pushing ring device, and the shrinking ring clamp of this utility model.

[0024] Figure 12 This is a structural diagram illustrating step five of the use of the expanding ring mandrel, the ring pusher, and the shrinking ring clamp of this utility model.

[0025] Figure 13 This is a structural diagram illustrating step six of the use of the expanding mandrel, pushing ring device, and shrinking ring clamp of this utility model.

[0026] Figure 14 This is a structural schematic diagram of the first step in using the introductory ring of this utility model;

[0027] Figure 15 This is a schematic diagram of the structure of the inlet ring of this utility model in step two.

[0028] Figure 16 This is a schematic diagram of the structure of the introductory ring of this utility model in step three;

[0029] Figure 17 This is a structural schematic diagram of step four of using the introductory ring of this utility model;

[0030] In the diagram: 1. Frustum of the expanding ring mandrel, 2. Cylindrical part of the expanding ring mandrel, 3. First frustum, 4. First cylindrical part, 5. Second cylindrical part, 6. Second frustum, 7. Push ring device, 8. Upper retaining ring, 9. Lower retaining ring, 10. Fixed connecting lug, 11. Guide ring, 12. Third cylindrical part, 13. CQ ring, 14. PTFE part of CQ ring, 15. Fluororubber part of CQ ring, 16. Shrinking ring clamp, 17. Guide belt. Detailed Implementation

[0031] To make the structure and function of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0032] Reference Appendix Figure 1-17A drive device actuator assembly fixture includes an expanding ring mandrel and a pusher ring 7; the expanding ring mandrel is mounted on a piston; a sealing ring is mounted on the expanding ring mandrel; and the pusher ring 7 is mounted on the expanding ring mandrel.

[0033] Furthermore, the expanding ring mandrel is composed of a frustum portion 1 and a cylindrical portion 2; the large bottom surface of the frustum portion 1 is provided with the cylindrical portion 2; the outer diameter of the large bottom surface of the frustum portion 1 is equal to the outer diameter of the cylindrical portion 2.

[0034] Furthermore, the interior of the expanding ring mandrel is provided with a cavity; the cavity is sequentially composed of a first frustum portion 3, a first cylindrical portion 4, a second cylindrical portion 5, a second frustum portion 6, and a third cylindrical portion 12; the small bottom surface of the frustum portion 1 of the expanding ring mandrel is provided with the first frustum portion 3; the end of the cylindrical portion 2 of the expanding ring mandrel away from the frustum portion 1 of the expanding ring mandrel is provided with the third cylindrical portion 12; the diameter of the small bottom surface of the first frustum portion 3 is equal to the diameter of the first cylinder; the diameter of the first cylindrical portion 4 is smaller than the diameter of the second cylindrical portion 5; the diameter of the second cylindrical portion 5 is equal to the diameter of the small bottom surface of the second frustum portion 6; the diameter of the large bottom surface of the second frustum portion 6 is equal to the diameter of the third cylindrical portion 12.

[0035] Furthermore, the expanding ring mandrel is used to be sleeved on both ends of the piston; the frustum portion 1 of the expanding ring mandrel is used to evenly open the sealing ring.

[0036] It should be noted that the ring expander mandrel is a tooling required when installing the CQ ring 13 onto the piston. When in use, it is placed on the piston, with its shape gradually increasing from thin to thick, which serves to expand the ring and slightly stretch the PTFE material to facilitate its sliding into the sealing groove on the piston.

[0037] Furthermore, the size of the pusher ring 7 matches the size of the expander ring mandrel; the pusher ring 7 also includes a front end for fitting the sealing ring, and the pusher ring 7 is used to push the sealing ring along the expander ring mandrel into the sealing ring groove of the piston.

[0038] It should be noted that the pusher ring 7 is made of elastic material. This tooling is required when installing the CQ ring 13 on the piston. Because the PTFE material is relatively hard, when the ring is opened by the ring expander mandrel, the PTFE ring will stick tightly to the ring expander mandrel, making it difficult to push manually. Therefore, the elastic pusher ring 7 tooling is needed. This tooling can push the PTFE ring down until it slides into the sealing groove on the piston.

[0039] Furthermore, it also includes a shrink ring clamp 16, which is used to tighten the sealing ring; the shrink ring clamp 16 includes an upper clamping ring 8 and a lower clamping ring 9; both the upper clamping ring 8 and the lower clamping ring 9 are semi-circular clamping rings; the left and right ends of the upper clamping ring 8 and the lower clamping ring 9 are respectively provided with fixed connecting ears 10; the fixed connecting ears 10 are provided with mounting bolt holes of the same size and concentricity; the upper clamping ring 8 and the lower clamping ring 9 are connected by bolts through the fixed connecting ears 10 to form a full circular clamp; there are at least two shrink ring clamps 16.

[0040] It should be noted that the shrink ring clamp 16 is needed after the CQ ring 13 is installed on the piston. Because the PTFE ring was slightly stretched on the expander mandrel, causing it to deform, the shrink ring clamp 16 should be used to tighten it immediately after the PTFE ring is installed. After 20 hours, the shrink ring clamp 16 should be removed. The purpose of this is to allow the PTFE ring to shrink back to its original shape to achieve the best sealing effect.

[0041] Furthermore, it also includes an inlet ring 11, which is used to fix the guide band 17 on the piston; the inlet ring 11 is a hollow cylinder divided into four parts; the hollow shape of the inlet ring 11 is consistent with the outer contour shape of the frustum; the outer edge of the hollow cylinder is chamfered.

[0042] It should be noted that the guide ring is used to insert the piston into the tank and its function is to prevent the guide belt 17 from spreading out during insertion; without this tooling, the guide belt 17 will get stuck between the piston and the groove in the tank, preventing the piston from moving forward and backward normally.

[0043] Furthermore, the sealing ring is a CQ ring 13; the guide strip 17 is a beveled cut type A.

[0044] It should be noted that the usage process of the ring expander mandrel, ring pusher, and ring shrinker clamp is as follows: First, put the ring expander mandrel onto the piston. Then, install the fluororubber part 15 of the CQ ring into the CQ ring groove on the piston. Put the PTFE part 14 of the CQ ring onto the ring expander mandrel. Then, use the ring pusher to push it down into the CQ ring groove on the piston. Finally, use the ring shrinker clamp to tighten it, so that the PTFE material shrinks back to its normal size.

[0045] The procedure for using the guide ring is as follows: First, install the guide belt onto the piston. Then, install the guide ring into the driver. Next, install the piston with the guide belt installed. Because the guide belt has notches, it makes tight contact with the guide ring and will not come apart. Finally, install the piston into the tank, remove the guide ring, and the assembly is complete. The CQ ring and guide belt described in this application can be found in the Parker Hannifin catalog.

[0046] The above examples are merely preferred embodiments of the present invention. Obviously, the present invention is not limited to the above embodiments, and many variations are possible. All variations that can be directly derived or conceived by those skilled in the art from the disclosure of the present invention should be considered within the scope of protection of the present invention.

Claims

1. A drive device actuator assembly fixture, characterized in that: The expansion ring mandrel is sleeved on the piston, and the sealing ring is sleeved on the expansion ring mandrel.

2. The drive device actuator assembly tooling of claim 1, wherein: The expansion ring mandrel is composed of an expansion ring mandrel frustum and an expansion ring mandrel cylinder; the large bottom surface of the expansion ring mandrel frustum is provided with the expansion ring mandrel cylinder; and the outer diameter of the large bottom surface of the expansion ring mandrel frustum is equal to the outer diameter of the expansion ring mandrel cylinder.

3. The drive device actuator assembly tooling of claim 2, wherein: The expansion ring mandrel is internally provided with a cavity; the cavity is composed of a first frustum, a first cylinder, a second cylinder, a second frustum and a third cylinder in sequence; the small bottom surface of the expansion ring mandrel frustum is provided with the first frustum; the end of the expansion ring mandrel cylinder away from the expansion ring mandrel frustum is provided with the third cylinder; the small bottom surface diameter of the first frustum is equal to the first cylinder diameter; the diameter of the first cylinder is smaller than the diameter of the second cylinder; the diameter of the second cylinder is equal to the small bottom surface diameter of the second frustum; and the large bottom surface diameter of the second frustum is equal to the diameter of the third cylinder.

4. The drive device actuator assembly tooling of claim 3, wherein: The expansion ring mandrel is used to be sleeved on both ends of the piston; and the expansion ring mandrel frustum is used to uniformly expand the sealing ring.

5. The drive device actuator assembly tooling of claim 1, wherein: The size of the push ring is matched with the expansion ring mandrel; the push ring further comprises a front end taper for sleeving the sealing ring; and the push ring is used to push the sealing ring to move along the expansion ring mandrel into the sealing ring groove of the piston.

6. The drive device actuator assembly tooling of claim 1, wherein: The shrink ring clamp is used to clamp the sealing ring; the shrink ring clamp comprises an upper clamping ring and a lower clamping ring; the upper clamping ring and the lower clamping ring are both semicircular clamping rings; the left and right ends of the upper clamping ring and the lower clamping ring are respectively provided with fixed connection ears; the fixed connection ears are provided with mounting bolt holes of the same size and concentricity; the upper clamping ring and the lower clamping ring are butted by the fixed connection ears through bolts to form a whole circular clamping ring; and the shrink ring clamp is at least two.

7. The drive device actuator assembly tooling of claim 1, wherein: The guide-in ring is used to fix the guide belt on the piston; the guide-in ring is a hollow cylinder divided into four parts; the hollow shape of the guide-in ring is consistent with the outer contour shape of the frustum; and the outer edge of the hollow cylinder adopts a straight chamfer.

8. The drive device actuator assembly tooling of claim 7, wherein: The sealing ring is a CQ ring; and the guide belt is an A-shaped inclined angle cutting head. The sealing ring is a CQ ring; and the guide belt is an A-shaped inclined angle cutting head.

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