Ejector rod trolley wheel and ejector rod trolley

Abstract

The utility model relates to the technical field of mandril trolleys, in particular to a mandril trolley wheel and a mandril trolley. The utility model provides a push rod trolley wheel. The push rod trolley wheel comprises an outer ring body, an inner ring body and a plurality of rolling bodies, the outer ring body and the inner ring body are coaxially arranged, an annular mounting groove is formed between the inner wall of the outer ring body and the outer wall of the inner ring body, the multiple rolling bodies are mounted in the annular mounting groove in a rolling mode, and the multiple rolling bodies are tightly arranged around the axis of the annular mounting groove; and any two adjacent rolling bodies are in contact with each other. According to the push rod trolley wheel, the rolling body is installed in the annular installation groove between the outer ring body and the inner ring body, and due to the fact that a retainer is omitted, when the wheel is impacted, the situation that the service life of the wheel is short due to the fact that the service life of the retainer is short is avoided, the service life of the wheel is prolonged, and the failure rate is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of a ram trolley, in particular to a ram trolley wheel and a ram trolley. Background Art

[0002] The known structure of the ram trolley wheel is as follows: the outer layer is a steel roller ring, a standard bearing with a cage is installed in the ring, and glands are provided at both ends of the ring to axially press and position the bearing. The ram trolley wheel slideway is tens of meters long and has an open structure. Multiple replaceable slide plates are embedded in the slideway. The ram trolley wheel supports the ram trolley and the ram weighing several tons to roll back and forth in the slideway.

[0003] Because of the joints on the slide, the wheels of the trolley are subjected to an impact every time they pass through each slide joint. In addition, the slideway is an open structure, and cooling water and dust enter the slideway, destroying the lubrication of the wheels and the slideway and accelerating the wear of the wheels and the slideway, resulting in an increasing gap between the trolley and the slideway, and the impact force on the wheels of the trolley during operation is increasing.

[0004] The standard bearing in the wheel consists of four parts: outer ring, inner ring, rolling element and cage. The cage is the least impact-resistant. As the impact force that the trolley wheel is subjected to during operation becomes greater and greater, the cage will break within less than three months of use, causing the wheel to get stuck, with a high failure rate. Utility Model Content

[0005] (I) The problem to be solved by the utility model is that the impact force on the wheels of the trolley during operation is getting bigger and bigger, which causes the retaining frame of the standard bearing in the wheel to break within less than three months of use, resulting in the wheel getting stuck, with a high failure rate.

[0006] (II) Technical solution

[0007] A ram trolley wheel, comprising an outer ring body, an inner ring body and a plurality of rolling bodies;

[0008] The outer ring body and the inner ring body are coaxially arranged, and an annular mounting groove is formed between the inner wall of the outer ring body and the outer wall of the inner ring body. Multiple rolling bodies are rollingly installed in the annular mounting groove. Multiple rolling bodies are closely arranged around the axis of the annular mounting groove, and any two adjacent rolling bodies are in contact.

[0009] According to an embodiment of the utility model, a groove for accommodating the rolling body is formed on the inner wall of the outer ring body, and the groove is annular and coaxially arranged with the outer ring body.

[0010] According to one embodiment of the utility model, the wheel of the push rod trolley also includes two retaining rings, which are respectively arranged on two opposite end faces of the inner ring body, and the retaining rings are coaxially arranged with the inner ring body, and an annular gap is formed between the outer wall of the retaining ring and the inner wall of the outer ring body, and each of the retaining rings is sleeved with at least one sealing ring, which is used to seal the annular gap.

[0011] According to an embodiment of the utility model, at least one annular groove is formed on the outer wall of the retaining ring, and the sealing ring is installed on the annular groove.

[0012] According to an embodiment of the utility model, a plurality of annular grooves are formed on the outer wall of the retaining ring, and the annular grooves are arranged in sequence along the thickness direction of the retaining ring, and a sealing ring is installed on each of the annular grooves.

[0013] According to an embodiment of the utility model, at least one lubricating oil hole is formed on the inner ring body, and the axis of the lubricating oil hole is perpendicular to the axis of the inner ring body.

[0014] According to an embodiment of the utility model, two grooves are provided on the inner wall of the outer ring body along the thickness direction thereof, and the two grooves are symmetrically arranged with respect to the outer ring body, and a plurality of rolling bodies are rollingly arranged in each of the grooves.

[0015] According to an embodiment of the present invention, the rolling body is a sphere or a cylinder.

[0016] A ram trolley comprises the ram trolley wheel mentioned above.

[0017] Beneficial effects of the utility model:

[0018] The utility model provides a push rod trolley wheel, comprising an outer ring body, an inner ring body and a plurality of rolling bodies; the outer ring body and the inner ring body are coaxially arranged, and an annular mounting groove is formed between the inner wall of the outer ring body and the outer wall of the inner ring body, and the plurality of rolling bodies are rollingly mounted in the annular mounting groove, and the plurality of rolling bodies are closely arranged around the axis of the annular mounting groove, and any two adjacent rolling bodies are in contact with each other.

[0019] The wheel of this ram trolley has the following differences from the traditional ram trolley wheel:

[0020] First, the roller ring of the previous fixed rod trolley wheel is integrated with the outer ring of the bearing to form an outer ring body, and the top rod trolley wheel is simplified into a non-standard bearing structure to maximize the size of the rolling element and improve the impact resistance of the rolling element. Second, the cage is eliminated and the rolling element is installed in the annular mounting groove between the outer ring body and the inner ring body. Since the cage is eliminated, when the wheel is impacted, the short service life of the cage will not cause the short service life of the wheel, thereby increasing the service life of the wheel, reducing the failure rate, having little impact on production and low maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 The installation structure diagram of the axle and the push rod trolley wheel provided in the second embodiment of the utility model;

[0023] Figure 2 This is a structural diagram of the wheel of the push rod trolley provided in Example 1 of the utility model.

[0024] Icons: 1. Outer ring; 2. Inner ring; 201. Lubricating oil hole; 3. Rolling element; 4. First retaining ring; 5. Sealing ring; 6. Second retaining ring; 7. Axle; 701. Step protrusion; 702. First lubricating oil hole; 703. Second lubricating oil hole; 8. Pad; 9. Bolt; 10. Washer; 11. Vehicle body. DETAILED DESCRIPTION

[0025] The technical solution of the utility model will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] Embodiment 1:

[0027] like Figure 2As shown, embodiment 1 of the utility model provides a push rod trolley wheel, including an outer ring body 1, an inner ring body 2 and a plurality of rolling bodies 3; the outer ring body 1 and the inner ring body 2 are coaxially arranged, and an annular mounting groove is formed between the inner wall of the outer ring body 1 and the outer wall of the inner ring body 2, and the plurality of rolling bodies 3 are rollingly installed in the annular mounting groove, and the plurality of rolling bodies 3 are closely arranged around the axis of the annular mounting groove, and any two adjacent rolling bodies 3 are in contact.

[0028] As a preferred embodiment, a groove for accommodating the rolling body 3 is formed on the inner wall of the outer ring body 1 . The groove is annular and is coaxially arranged with the outer ring body 1 .

[0029] The ram trolley wheel in this embodiment is different from the conventional ram trolley wheel in the following ways:

[0030] First, in this embodiment, the roller ring of the previous wheel is integrated with the outer ring of the bearing to form the outer ring body 1, and the push rod trolley wheel is simplified into a non-standard bearing structure to maximize the size of the rolling body 3 and improve the impact resistance of the rolling body 3.

[0031] Second, the retainer is eliminated, and the rolling element 3 is installed in the annular installation groove between the outer ring body 1 and the inner ring body 2. Since the retainer is eliminated, when the wheel is impacted, the service life of the wheel will not be shortened due to the short service life of the retainer, thereby increasing the service life of the wheel, reducing the failure rate, having little impact on production and low maintenance costs.

[0032] Third, the rolling elements 3 that were previously arranged at intervals are changed to be arranged closely.

[0033] As a preferred embodiment, a groove is provided on the inner wall of the outer ring body 1. The groove is annular and coaxially arranged with the outer ring body 1. The groove is used to accommodate the rolling body 3 and plays an external holding and guiding role for the rotation and revolution of the rolling body 3. Specifically, Figure 2 As shown, a portion of the rolling body 3 close to the outer ring body 1 is embedded in the groove, and the surface of the rolling body 3 close to the inner ring body 2 is in contact with the inner ring body 2, and the groove is full of rolling bodies 3, and multiple rolling bodies 3 are closely arranged around the axis of the groove. It should be noted that multiple rolling bodies 3 are closely arranged in sequence, and there is contact force between the rolling bodies 3. In this way, when the inner ring body 2 rotates, multiple rolling bodies 3 will revolve around the groove, and a single rolling body 3 will also rotate. Since the extrusion force between the rolling bodies 3 is very small, and the friction between the rolling bodies 3 is rolling friction, the friction between the rolling bodies 3 is very small.

[0034] It should be noted that the outer ring body 1 of the first embodiment is different from the roller ring of the conventional ram trolley wheel. The difference lies in that, first, the thickness of the outer ring body 1 is greater than the roller ring of the ram trolley wheel, that is, it can be regarded as the fusion of the conventional roller ring and the outer ring of the bearing to form the outer ring body 1. Second, a groove for accommodating the rolling element 3 is provided on the inner wall of the outer ring body 1.

[0035] The purpose of such arrangement is to simplify the wheel of the ram trolley into a structure similar to a non-standard bearing, so as to maximize the size of the rolling body 3 and improve the impact resistance of the rolling body 3.

[0036] Preferably, Figure 2 As shown, two grooves are opened on the inner wall of the outer ring body 1, the two grooves are opened in sequence along the thickness direction, and the two grooves are symmetrically arranged with respect to the outer ring body 1, and the two grooves are filled with a plurality of tightly fitting rolling bodies 3.

[0037] As a preferred embodiment, Figure 2 As shown, the wheel of the push rod trolley also includes two retaining rings. For the convenience of description, the two retaining rings are named as the first retaining ring 4 and the second retaining ring 6. Among them, the first retaining ring 4 is located at Figure 2 On the right side of the inner ring body 2, the second retaining ring 6 is located on the left side of the inner ring body 2. The first retaining ring 4, the inner ring body 2 and the second retaining ring 6 are coaxially arranged. The inner diameters of the two retaining rings are the same as those of the inner ring body 2, but the outer diameters of the two retaining rings are larger than the inner ring body 2. Since the outer diameter of the retaining ring is larger than the inner ring body 2, when the first retaining ring 4 and the second retaining ring 6 are respectively attached to the right side and the left side of the inner ring body 2, the rolling element 3 in the annular mounting groove can be limited, and the inner ring body 2 can also be positioned axially.

[0038] It should be noted that since the outer diameter of the retaining ring is smaller than the inner diameter of the outer ring body 1, and the sum of the thicknesses of the inner ring body 2 and the two retaining rings is the same as the thickness of the outer ring body 1, an annular gap is formed between the outer side surface of the retaining ring and the inner wall of the outer ring body 1.

[0039] In order to prevent dust and cooling water from entering through the annular gap and destroying the lubrication effect between the outer ring body 1, the inner ring body 2 and the rolling body 3. Figure 2 As shown, an annular groove is formed on the outer side surface of each retaining ring, and a sealing ring 5 is installed on each annular groove. The sealing ring 5 blocks the annular gap to prevent dust and cooling water from entering the interior of the wheel through the annular gap.

[0040] Furthermore, the sealing ring 5 is sleeved on the retaining ring, and the inner wall protrusion of the sealing ring 5 is embedded in the annular groove on the outer side of the retaining ring, and the lip of the sealing ring 5 is tightly attached to the inner wall of the outer ring body 1 to achieve a good sealing effect.

[0041] Optionally, in order to further improve the sealing effect, a plurality of annular grooves are provided on the outer surface of the retaining ring, and the annular grooves are arranged in sequence along the thickness direction of the retaining ring, and a sealing ring 5 is installed on each annular groove. This can better prevent dust and cooling water from entering the wheel from the annular gap.

[0042] Preferably, in this embodiment, the rolling body 3 is a cylinder, and the end surface of the cylinder is parallel to the end surface of the inner ring body 2. In addition, the rolling body 3 can also be a sphere.

[0043] As a preferred embodiment, a lubricating oil hole 201 is opened on the inner ring body 2, and the axis of the lubricating oil hole 201 is perpendicular to the axis of the inner ring body 2, so that the lubricating liquid flows from the lubricating oil hole 201 into the annular mounting groove between the outer ring body 1 and the inner ring body 2.

[0044] Embodiment 2:

[0045] like Figure 1 As shown, this embodiment 2 provides a push rod trolley, and the push rod trolley includes the push rod trolley wheel in the embodiment 1. Specifically, as Figure 1 As shown, the ram trolley includes an axle 7, a pad 8 and bolts 9.

[0046] Among them, a threaded hole is formed on the right end face of the axle 7, the right end of the axle 7 is inserted into the inner ring body 2 of the wheel, a round hole for the bolt 9 to pass through is formed on the backing plate 8, the backing plate 8 is attached to the right side of the wheel, and the end of the bolt 9 passes through the round hole of the backing plate 8 and is screwed into the threaded hole on the right end face of the axle 7. Further, a step protrusion 701 is formed on the axle 7, and the step protrusion 701 is attached to the left side of the wheel. The step protrusion 701 cooperates with the backing plate 8 to axially limit the inner ring body 2 and the retaining ring.

[0047] like Figure 2 As shown, a washer 10 is sleeved on the bolt 9, and the washer 10 is located between the bolt head and the washer 10. When the bolt 9 is tightened, the washer 10 can play an anti-loosening effect.

[0048] Furthermore, a first lubricating oil hole 702 and a second lubricating oil hole 703 are respectively provided in the interior of the axle 7, wherein the first lubricating oil hole 702 and the axis of the axle 7 are coaxially arranged, and the axis of the second lubricating oil hole 703 is perpendicular to the axis of the first lubricating oil hole 702. When the axle 7 is inserted into the interior of the inner ring body 2 and in place, the axis of the second lubricating oil hole 703 is coaxial with the axis of the lubricating oil hole 201 on the inner ring body 2, so that the lubricating oil in the first lubricating oil hole 702 can flow into the annular mounting groove between the outer ring body 1 and the inner ring body 2 through the second lubricating oil hole 703 and the lubricating oil hole 201 to lubricate the rolling element 3.

[0049] Figure 1FIG. 1 is a diagram of the installation structure of the axle 7 and one of the wheels of the push rod trolley. The installation method of the other wheels and the axle 7 of the push rod trolley is the same as Figure 1 As shown in Figure 1 Taking the wheel in as an example, the installation of the wheel and the axle 7 is explained: the axle 7 passes through the vehicle body 11, and the axle 7 can be suspended near the bottom of the vehicle body 11, and then the second retaining ring 6 is sleeved on the right end of the axle 7 and the second retaining ring 6 is pushed, and then the inner ring body 2 of the wheel is installed on the axle 7, so that the end of the axle 7 is inserted into the interior of the inner ring body 2, at this time, the step protrusion 701 at one end of the axle 7 contacts with the second retaining ring 6, and then the first retaining ring 4 is sleeved on the right end of the axle 7, and the gasket 8 is fitted to the right side surface of the inner ring body 2, and then the gasket 10 is sleeved on the bolt 9 and the bolt 9 is inserted into the round hole on the gasket 8 and tightened. The bolt 9 is screwed into the threaded hole on the right end surface of the axle 7. As the bolt 9 is gradually screwed in, the step protrusion 701 and the gasket 8 firmly pre-tighten the inner ring body 2 and the two retaining rings.

[0050] Since the ram trolley uses the ram trolley wheels in the first embodiment, and since the impact resistance of the ram trolley wheels is greatly enhanced, the service life of the ram trolley is extended and the failure rate is reduced.

[0051] In the description of the present invention, it should be noted that the terms "upper" and "lower" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0052] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the insides of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. In addition, in the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0053] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A ram trolley wheel, characterized in that: It comprises an outer ring body (1), an inner ring body (2) and a plurality of rolling bodies (3); The outer ring body (1) and the inner ring body (2) are coaxially arranged, and an annular mounting groove is formed between the inner wall of the outer ring body (1) and the outer wall of the inner ring body (2), and a plurality of rolling bodies (3) are rollingly mounted in the annular mounting groove. The plurality of rolling bodies (3) are closely arranged around the axis of the annular mounting groove, and any two adjacent rolling bodies (3) are in contact with each other.

2. A ram trolley wheel according to claim 1, characterized in that: The inner wall of the outer ring body (1) is provided with a groove for accommodating the rolling body (3); the groove is annular and is coaxially arranged with the outer ring body (1).

3. A ram trolley wheel according to claim 2, characterized in that: The push rod trolley wheel also includes two retaining rings, which are respectively arranged on two opposite end faces of the inner ring body (2), and the retaining rings are coaxially arranged with the inner ring body (2). An annular gap is formed between the outer wall of the retaining ring and the inner wall of the outer ring body (1), and each retaining ring is sleeved with at least one sealing ring (5), and the sealing ring (5) is used to seal the annular gap.

4. A ram trolley wheel according to claim 3, characterized in that: At least one annular groove is formed on the outer wall of the retaining ring, and the sealing ring (5) is mounted on the annular groove.

5. A ram trolley wheel according to claim 4, characterized in that: A plurality of annular grooves are provided on the outer wall of the retaining ring. The annular grooves are arranged in sequence along the thickness direction of the retaining ring, and a sealing ring (5) is installed on each of the annular grooves.

6. A ram trolley wheel according to claim 1, characterized in that: At least one lubricating oil hole (201) is provided on the inner ring body (2), and the axis of the lubricating oil hole (201) is perpendicular to the axis of the inner ring body (2).

7. A ram trolley wheel according to claim 2, characterized in that: Two grooves are provided on the inner wall of the outer ring body (1) along the thickness direction thereof, and the two grooves are symmetrically arranged with respect to the outer ring body (1), and a plurality of rolling bodies (3) are rollingly arranged in each of the grooves.

8. A ram trolley wheel according to any one of claims 1 to 7, characterized in that: The rolling body (3) is a sphere or a cylinder.

9. A push rod trolley, characterized in that: A ram trolley wheel comprising any one of claims 1-8.

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