CN210686279U - Elastic piston for concrete pump - Google Patents
Elastic piston for concrete pump Download PDFInfo
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- CN210686279U CN210686279U CN201921859519.XU CN201921859519U CN210686279U CN 210686279 U CN210686279 U CN 210686279U CN 201921859519 U CN201921859519 U CN 201921859519U CN 210686279 U CN210686279 U CN 210686279U
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- concrete pump
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Abstract
The utility model belongs to the technical field of the elastic piston accessory, specifically say and relate to elastic piston for the concrete pump, its main technical characteristics is: including the piston body, have the sealing ring at the preceding, back both ends of piston body, establish at the piston body center and have the through-hole, be provided with the position sleeve at the periphery of through-hole, be provided with the screw rod hole on the position sleeve, the piston body includes interior piston body and outer piston body, position sleeve with interior piston body structure as an organic whole, sealing ring and outer piston body structure as an organic whole are provided with the adhesive linkage between interior piston body and the outer piston body. The inner piston body is made of a nylon material with high strength and good corrosion resistance, the outer piston body is made of a rubber material, the inner piston body and the outer piston body are vulcanized together at high temperature, the whole weight is greatly reduced, the machining process and the die are simple, the elasticity of the whole elastic piston is good, the sealing effect is good, and the strength is improved.
Description
Technical Field
The utility model belongs to the technical field of the piston, especially, relate to elastic piston for the concrete pump.
Background
In the fields of building and bridge construction, concrete is required to be conveyed to a specified position by a concrete pump, so that the working efficiency is improved, and the construction cost is saved. The quality of the elastic piston used on the concrete pump directly influences the construction progress and the construction quality. The elastic piston who uses on present concrete pump includes the piston body, is provided with the annular uide bushing of circle in piston body the place ahead, and the uide bushing links together for connecting the casting die with the piston body, and the external diameter of uide bushing and piston body is the same, and uide bushing and piston body plane contact, above-mentioned elastic piston for concrete pump has following defect because of the reason of structure: the guide sleeve is made of materials such as nylon, polytetrafluoroethylene and formaldehyde, the piston body is made of rubber, the piston is stressed at the joint of the piston body and the guide sleeve and the front end of the guide sleeve during working, and when the piston moves back, the joint of the piston body and the guide sleeve is subjected to outward tension, so that the piston body is easily caused to fall off blocks and turned edges on one side close to the guide sleeve, the edges of the piston body are extruded into a cylinder gap to form shearing, the piston body is damaged to cause leakage, and the service life is greatly shortened.
SUMMERY OF THE UTILITY MODEL
The technical problem solved by the utility model is to provide an elastic piston for concrete pump with long service life, good sealing effect and difficult slurry leakage.
The utility model provides a first technical scheme that elastic piston adopted for the concrete pump is: including piston body and the uide bushing that is located piston body the place ahead the radial inboard of uide bushing rear end is provided with the annular draw-in groove of accepting, is the sleeve accepting the draw-in groove radial outside the piston body front end be provided with accept draw-in groove assorted plug, the plug inserts in accepting in the draw-in groove, the uide bushing external diameter with the external diameter of piston body equals.
The additional technical characteristics are as follows:
the plug is in a circular truncated cone shape with a large diameter at the upper end and a small diameter at the lower end, and the receiving clamping groove is in a circular truncated cone shape which is the same as the plug in shape;
the plug is in a circular truncated cone shape with a small diameter at the upper end and a large diameter at the lower end, and the receiving clamping groove is in a circular truncated cone shape which is the same as the plug in shape;
the plug is cylindrical, and the receiving clamping groove is cylindrical and has the same shape as the plug;
the ratio of the radial thickness of the guide sleeve to the radial thickness of the sleeve is 3:1-5: 1.
The utility model provides an elastic piston for concrete pump of first scheme compares with prior art, has following advantage: firstly, because the piston comprises a piston body and a guide sleeve positioned in front of the piston body, an annular bearing clamping groove is arranged on the radial inner side of the rear end of the guide sleeve, a sleeve is arranged at the radial outer side of the bearing clamping groove, a plug matched with the bearing clamping groove is arranged at the front end of the piston body, the plug is inserted into the bearing clamping groove, the outer diameter of the guide sleeve is equal to that of the piston body, when the piston moves back, the outward tension on the joint of the piston body and the guide sleeve is offset with the inward acting force of the sleeve on the radial outer side of the bearing clamping groove, the piston body made of rubber material is limited in the sleeve by the sleeve at the rear end of the guide sleeve, therefore, the piston body close to one side of the guide sleeve cannot fall off and turn over due to extrusion, the abrasion is accelerated, the structure is simple, the installation is convenient, the service life is long, and the sealing effect is good; secondly, the plug is in a circular truncated cone shape with a large upper end diameter and a small lower end diameter, and the receiving clamping groove is in a circular truncated cone shape which is the same as the plug in shape, so that the sealing effect is good, and the connection is firmer; thirdly, as the plug is in a circular truncated cone shape with a small diameter at the upper end and a large diameter at the lower end, and the receiving clamping groove is in a circular truncated cone shape which is the same as the plug in shape, the installation and the processing are more convenient; fourthly, as the plug is cylindrical, the receiving clamping groove is cylindrical and has the same shape as the plug, and the installation is convenient; fifthly, the ratio of the radial thickness of the guide sleeve to the radial thickness of the sleeve is 3:1-5: 1. The service life is longer.
The utility model provides a second technical scheme that elastic piston adopted for the concrete pump is: including the piston body with be located the uide bushing in piston body the place ahead, the piston body is including the head that is located the front end and the body portion that is located this head rear end, head and body portion are cylindrical, the uide bushing rear end cover is in on the head, the radius of body portion with the difference of the radius of head equals the radial thickness of uide bushing.
The utility model provides an elastic piston for concrete pump of first scheme compares with prior art, has following advantage: owing to including the piston body and the uide bushing that is located piston body the place ahead, the piston body is including the head that is located the front end and the body portion that is located this head rear end, head and body portion are cylindrical, the uide bushing rear end cover is in on the head, the radius of body portion with the difference of the radius of head equals the radial thickness of uide bushing, uide bushing lower part cover are in the head outside of piston body, can not cause the piston body that is close to one side of uide bushing to fall piece, turn-ups, and wearing and tearing are accelerated, and the sleeve atress of accepting the radial outside of draw-in groove is less relatively, simple structure, simple to operate, long service life, sealed effectual.
Drawings
FIG. 1 is a schematic structural view of the elastic piston for concrete pump of the present invention;
FIG. 2 is a schematic structural view of an elastic piston for a concrete pump in a second configuration;
fig. 3 is a schematic structural view of an elastic piston for a concrete pump in a third configuration;
fig. 4 is a schematic structural view of an elastic piston for a concrete pump in a fourth configuration.
Detailed Description
The structure and the operation principle of the elastic piston for the concrete pump of the present invention will be further described in detail with reference to the accompanying drawings.
As shown in fig. 1, fig. 2 and fig. 3, the utility model discloses elastic piston's for concrete pump structural schematic diagram, the utility model discloses elastic piston for concrete pump includes piston body 1 and uide bushing 2 that is located piston body 1 the place ahead, is provided with annular accepting draw-in groove 3 in the radial inboard of uide bushing 2 rear end, is sleeve 4 accepting draw-in groove 3 radial outside, is provided with and accepts draw-in groove 3 assorted plug 5 at piston body 1's front end, and in plug 5 inserted and accepts draw-in groove 3, the external diameter of uide bushing 2 equals with piston body 1's external diameter.
The atress of piston during operation is in the junction of piston body and uide bushing, in the piston back-forth movement, the outside tension that the junction of piston body 1 and uide bushing 2 received offsets with the inward effort of sleeve 4 who accepts the radial outside of draw-in groove 3, the piston body that rubber materials made is restricted in the sleeve by the sleeve of uide bushing rear end, like this, can not cause the piston body that is close to one side of uide bushing to drop the piece because of the extrusion causes, the turn-ups, wearing and tearing are accelerated, moreover, the steam generator is simple in structure, high durability and long service life, good sealing effect.
As shown in fig. 2, the plug 5 is in the shape of a circular truncated cone with a large upper end diameter and a small lower end diameter, and the receiving slot 3 is in the shape of a circular truncated cone which is the same as the plug, so that the sealing effect is good, and the connection is firmer.
As shown in fig. 3, the plug 5 is in a circular truncated cone shape with a small upper end diameter and a large lower end diameter, and the receiving slot 3 is in a circular truncated cone shape identical to the plug shape, so that the installation and the processing are more convenient.
As shown in fig. 1, the plug 5 is cylindrical, and the receiving slot 3 is cylindrical with the same shape as the plug, so that the installation is convenient.
The ratio of the radial thickness of the guide sleeve 2 to the radial thickness of the sleeve is 3:1-5:1, and the service life is longer.
As shown in fig. 4, the elastic piston for the concrete pump comprises a piston body 6 and a guide sleeve 7 positioned in front of the piston body, wherein the piston body 6 comprises a head part 61 positioned at the front end and a body part 62 positioned at the rear end of the head part 61, the head part 61 and the body part 62 are cylindrical, the rear end of the guide sleeve 7 is sleeved outside the head part 61, the difference between the radius of the body part 62 and the radius of the head part 61 is equal to the radial thickness of the guide sleeve 7, the lower part of the guide sleeve 7 is sleeved outside the head part of the piston body, the piston body close to one side of the guide sleeve cannot fall off, and the flanging and the abrasion is accelerated.
The utility model discloses a protection scope not only limits in above-mentioned embodiment, as long as the structure with the utility model discloses elastic piston for the concrete pump's structure is the same, just falls the utility model discloses the scope of protection.
Claims (6)
1. Elastic piston for the concrete pump, including piston body and the uide bushing that is located piston body the place ahead, its characterized in that: the piston comprises a piston body and is characterized in that an annular bearing clamping groove is formed in the radial inner side of the rear end of the guide sleeve, a sleeve is arranged on the radial outer side of the bearing clamping groove, a plug matched with the bearing clamping groove is arranged at the front end of the piston body and inserted into the bearing clamping groove, and the outer diameter of the guide sleeve is equal to that of the piston body.
2. The elastic piston for a concrete pump according to claim 1, characterized in that: the plug is in a circular truncated cone shape with a large upper end diameter and a small lower end diameter, and the bearing clamping groove is in a circular truncated cone shape which is the same as the plug in shape.
3. The elastic piston for a concrete pump according to claim 1, characterized in that: the plug is in a circular truncated cone shape with a small upper end diameter and a large lower end diameter, and the bearing clamping groove is in a circular truncated cone shape identical to the plug in shape.
4. The elastic piston for a concrete pump according to claim 1, characterized in that: the plug is cylindrical, and the bearing clamping groove is cylindrical and has the same shape as the plug.
5. The elastic piston for a concrete pump according to claim 1, characterized in that: the ratio of the radial thickness of the guide sleeve to the radial thickness of the sleeve is 3:1-5: 1.
6. Elastic piston for the concrete pump, including piston body and the uide bushing that is located piston body the place ahead, its characterized in that: the piston body comprises a head part and a body part, the head part is located at the front end of the piston body, the body part is located at the rear end of the head part, the head part and the body part are cylindrical, the rear end of the guide sleeve is sleeved on the head part, and the difference between the radius of the body part and the radius of the head part is equal to the radial thickness of the guide sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921859519.XU CN210686279U (en) | 2019-10-31 | 2019-10-31 | Elastic piston for concrete pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921859519.XU CN210686279U (en) | 2019-10-31 | 2019-10-31 | Elastic piston for concrete pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210686279U true CN210686279U (en) | 2020-06-05 |
Family
ID=70895426
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921859519.XU Active CN210686279U (en) | 2019-10-31 | 2019-10-31 | Elastic piston for concrete pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210686279U (en) |
-
2019
- 2019-10-31 CN CN201921859519.XU patent/CN210686279U/en active Active
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