Stainless steel pipe clamp pressing tongs

Abstract

The application belongs to the technical field of clamping and pressing forceps, and provides a stainless steel pipe fitting clamping and pressing forceps, which comprises a shell, an oil tank, an oil pump assembly, a hydraulic cylinder, a top pressing rod and clamping and pressing forceps, the oil tank is installed in the interior of the shell, the oil pump assembly is connected with the oil tank, the hydraulic cylinder is installed in the interior of the shell, a rodless cavity of the hydraulic cylinder is connected with the oil pump assembly, one end of the top pressing rod is connected with a telescopic rod of the hydraulic cylinder, the other end of the top pressing rod is provided with two top pressing blocks in the radial direction, the clamping and pressing forceps has two forceps arms, the clamping and pressing forceps is installed in the shell, and the two forceps arms are provided in one-to-one correspondence with the two top pressing blocks. The application has simple and compact structure, and pipe fitting clamping and pressing are more convenient and fast, and the clamping and pressing quality is ensured.

Description

Technical Field

[0001] This application belongs to the field of crimping pliers technology, and more specifically, relates to a stainless steel pipe fitting crimping plier. Background Technology

[0002] Pipe crimping pliers are mainly used for crimping pipe fittings. Although the operation of crimping pliers is relatively simple, it still requires the operator to have certain skills and experience and to operate strictly in accordance with the specifications. Otherwise, problems such as insufficient crimping and poor sealing may occur. For example, incorrect crimping position or insufficient crimping force will affect the connection quality. Utility Model Content

[0003] In order to overcome the above-mentioned shortcomings in the prior art, the purpose of this application is to provide a stainless steel pipe fitting crimping plier with a simple and compact structure, which makes pipe fitting crimping more convenient and faster, and ensures crimping quality.

[0004] The technical means adopted in this application to solve the above-mentioned technical problems are:

[0005] This application provides a stainless steel pipe fitting clamp, comprising:

[0006] case;

[0007] A fuel tank, which is installed inside the housing;

[0008] An oil pump assembly, which is connected to the oil tank;

[0009] A hydraulic cylinder is installed inside the housing, and the rodless chamber of the hydraulic cylinder is connected to the oil pump assembly;

[0010] A top pressure rod, one end of which is connected to the telescopic rod of the hydraulic cylinder, and the other end of which is provided with two top pressure blocks in a radial direction;

[0011] A clamping pliers having two clamping arms, the clamping pliers being mounted on the housing, and the two clamping arms being configured in a one-to-one correspondence with the two top pressing blocks;

[0012] When the telescopic rod of the hydraulic cylinder extends outward, it drives the top pressing rod to push out, and the top pressing block abuts against the inner wall of the clamp arm, so that the two clamp arms move away from each other, thereby enabling the clamping clamp to clamp the stainless steel pipe fitting.

[0013] Preferably, the oil pump assembly includes a pump body and a drive motor, the pump body being connected to the oil tank, and the drive motor being connected to the pump body.

[0014] Preferably, it also includes a slide tube, which is installed on the housing, and the side wall of the slide tube is provided with a clearance hole, and the top pressure block is provided corresponding to the clearance hole.

[0015] Preferably, the top pressure block has a cylindrical structure and is mounted on the top pressure rod via a rotating shaft.

[0016] Preferably, the system further includes a cylinder, a first gear, and a second gear. The first gear is connected to the output shaft of the drive motor, and the second gear meshes with the first gear. The telescopic rod of the cylinder is connected to the second gear, enabling the drive motor to repeatedly extend and retract the telescopic rod via the first and second gears. The rodless chamber of the cylinder is equipped with an inlet valve and an outlet valve. When the piston of the cylinder slides towards its rodless chamber, the pressure inside the rodless chamber is greater than the external pressure, causing the outlet valve to open and the inlet valve to close. When the piston of the cylinder slides towards the telescopic rod, the pressure in the rodless chamber is less than the external pressure, causing the inlet valve to open and the outlet valve to close.

[0017] Preferably, the system further includes a pressure relief valve and a return spring, wherein the return spring is sleeved on the telescopic rod, and one end of the return spring abuts against the inner wall of the hydraulic cylinder, and the other end of the return spring abuts against the piston of the hydraulic rod; the pressure relief valve is installed on the oil pump assembly.

[0018] Preferably, it also includes a fixing pin, the housing is provided with a fixing hole, the clamping pliers are provided with a positioning hole, and the fixing pin is inserted into the fixing hole and the positioning hole in sequence.

[0019] Compared with existing technologies, the stainless steel pipe clamp of this application is equipped with a hydraulic cylinder assembly. The hydraulic cylinder assembly pumps oil from the tank into the cylinder, causing the piston to slide. This, in turn, extends the telescopic rod, which in turn pushes the pressure rod forward. The pressure block then pushes the two clamp arms of the clamp outward, thus clamping the pipe. Operation is convenient and quick, ensuring clamping quality. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments of this application will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the stainless steel pipe fitting crimping pliers of this application.

[0022] Figure 2 This is an exploded view of the stainless steel pipe fitting crimping pliers of this application.

[0023] Marker explanation:

[0024] 1. Housing; 2. Oil tank; 3. Oil pump assembly; 3a. Drive motor; 4. Hydraulic cylinder; 5. Top pressure rod; 5a. Top pressure block; 6. Clamping clamp; 6a. Clamping arm; 7. Cylinder; 8. First gear; 9. Second gear; 10. Slide tube; 11. Fixing pin. Detailed Implementation

[0025] To better understand the above-mentioned objectives, features, and advantages of this utility model, it will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. Many specific details are set forth in the following description to provide a thorough understanding of this utility model; the described embodiments are merely some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0026] It should be noted that, unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. Similar reference numerals and letters denote similar items in the following figures; therefore, once an item is defined in one figure, it need not be further defined and explained in subsequent figures. Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0027] like Figure 1 and Figure 2 As shown, this embodiment provides a stainless steel pipe fitting clamp 6, including a housing 1, an oil tank 2, an oil pump assembly 3, a hydraulic cylinder 4, a top pressure rod 5, and the clamp 6. The oil tank 2 is installed inside the housing 1; the oil pump assembly 3 is connected to the oil tank 2; the hydraulic cylinder 4 is installed inside the housing 1, and the rodless chamber of the hydraulic cylinder 4 is connected to the oil pump assembly 3; one end of the top pressure rod 5 is connected to the telescopic rod of the hydraulic cylinder 4, and the other end of the top pressure rod 5 is provided with two top pressure blocks 5a radially; the clamp 6 has two clamp arms 6a, the clamp 6 is installed in the housing 1, and the two clamp arms 6a are arranged in a one-to-one correspondence with the two top pressure blocks 5a; wherein, when the telescopic rod of the hydraulic cylinder 4 extends outward, the telescopic rod drives the top pressure rod 5 to push out, and the top pressure blocks 5a abut against the inner sidewall of the clamp arm 6a, so that the two clamp arms 6a move away from each other, thereby realizing the clamp 6 clamping the stainless steel pipe fitting.

[0028] It should be noted that a battery can be installed inside the housing 1 to provide power to the drive motor 3a.

[0029] In some preferred embodiments of this invention, the oil pump assembly 3 includes a pump body and a drive motor 3a. The pump body is connected to the oil tank 2, and the drive motor 3a is connected to the pump body. Thus, the drive motor 3a drives the pump body to pump oil from the oil tank 2 into the oil cylinder.

[0030] In some preferred embodiments of this utility model, a sliding tube 10 is further included. The sliding tube 10 is installed on the housing 1, and a clearance hole is provided on the side wall of the sliding tube 10. The top pressure block 5a is correspondingly provided with the clearance hole. In this way, the sliding tube 10 allows the top pressure rod 5 and the top pressure block 5a to slide, and the clearance hole can avoid the top pressure block 5a, ensuring the stability and reliability of the sliding.

[0031] In some preferred embodiments of this invention, the top pressure block 5a has a cylindrical structure and is mounted on the top pressure rod 5 via a rotating shaft. Thus, the cylindrical top pressure block 5a ensures smoother operation during the pressing process, reduces friction, and lowers the pressure in the hydraulic cylinder.

[0032] In some preferred embodiments of this utility model, a cylinder 7, a first gear 8, and a second gear 9 are also included. The first gear 8 is connected to the output shaft of the drive motor 3a, and the second gear 9 meshes with the first gear 8. The telescopic rod of the cylinder 7 is connected to the second gear 9, enabling the drive motor 3a to repeatedly extend and retract the telescopic rod via the first gear 8 and the second gear 9. The rodless chamber of the cylinder 7 is equipped with an inlet valve and an outlet valve. When the piston of the cylinder 7 slides towards its rodless chamber, the pressure inside the rodless chamber is greater than the external pressure, causing the outlet valve to open and the inlet valve to close. When the piston of the cylinder 7 slides towards the telescopic rod, the pressure in the rodless chamber is less than the external pressure, causing the inlet valve to open and the outlet valve to close. Thus, the cylinder 7 can output gas, which can be pumped into pipes through external pipelines to test the sealing performance of the pipes. Furthermore, the drive motor 3a can drive both the cylinder 7 and the hydraulic cylinder, resulting in a simple and compact structure.

[0033] In some preferred embodiments of this utility model, a pressure relief valve and a return spring are also included. The return spring is sleeved on the telescopic rod, and one end of the return spring abuts against the inner wall of the hydraulic cylinder 4, while the other end of the return spring abuts against the piston of the hydraulic rod. The pressure relief valve is installed on the oil pump assembly 3.

[0034] In some preferred embodiments of this utility model, a fixing pin 11 is also included. The housing 1 is provided with a fixing hole, and the clamping pliers 6 is provided with a positioning hole. The fixing pin 11 is inserted into the fixing hole and the positioning hole in sequence. Thus, when the clamping pliers 6 needs to be installed into the housing 1, it is only necessary to align the positioning hole and the fixing hole, and then insert the fixing pin 11, which is convenient and quick.

[0035] Compared with existing technologies, the stainless steel pipe clamp 6 of this application is equipped with a hydraulic cylinder assembly. Oil from the oil tank 2 is pumped into the cylinder via the hydraulic cylinder assembly, causing the piston in the cylinder to slide. This, in turn, extends the telescopic rod, which in turn pushes the pressure rod 5 forward. The pressure block 5a pushes the two clamp arms 6a of the clamp 6 outward, thus clamping the pipe with the clamp 6. This design offers convenient and quick operation and ensures high-quality clamping.

[0036] The above description is merely a specific embodiment of this application and is not intended to limit the scope of protection of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should also be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

[0037] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A stainless steel pipe fitting crimping pliers, characterized in that, include: case; A fuel tank, which is installed inside the housing; An oil pump assembly, which is connected to the oil tank; A hydraulic cylinder is installed inside the housing, and the rodless chamber of the hydraulic cylinder is connected to the oil pump assembly; A top pressure rod, one end of which is connected to the telescopic rod of the hydraulic cylinder, and the other end of which is provided with two top pressure blocks in a radial direction; A clamping pliers having two clamping arms, the clamping pliers being mounted on the housing, and the two clamping arms being configured in a one-to-one correspondence with the two top pressing blocks; When the telescopic rod of the hydraulic cylinder extends outward, it drives the top pressing rod to push out, and the top pressing block abuts against the inner wall of the clamp arm, so that the two clamp arms move away from each other, thereby enabling the clamping clamp to clamp the stainless steel pipe fitting.

2. The stainless steel pipe fitting crimping pliers according to claim 1, characterized in that, The oil pump assembly includes a pump body and a drive motor. The pump body is connected to the oil tank, and the drive motor is connected to the pump body.

3. The stainless steel pipe fitting crimping pliers according to claim 1, characterized in that, It also includes a slide tube, which is installed on the housing. The side wall of the slide tube is provided with a clearance hole, and the top pressure block is provided corresponding to the clearance hole.

4. The stainless steel pipe fitting crimping pliers according to claim 1, characterized in that, The top pressure block has a cylindrical structure and is mounted on the top pressure rod via a rotating shaft.

5. The stainless steel pipe fitting crimping pliers according to claim 2, characterized in that, It also includes a cylinder, a first gear, and a second gear. The first gear is connected to the output shaft of the drive motor, and the second gear meshes with the first gear. The telescopic rod of the cylinder is connected to the second gear, so that the drive motor drives the telescopic rod to repeatedly extend and retract through the first gear and the second gear. The rodless chamber of the cylinder is provided with an inlet valve and an outlet valve. When the piston of the cylinder slides towards its rodless chamber, the pressure inside the rodless chamber is greater than the external pressure, so that the outlet valve opens and the inlet valve closes. When the piston of the cylinder slides towards the telescopic rod, the pressure inside the rodless chamber is less than the external pressure, so that the inlet valve opens and the outlet valve closes.

6. The stainless steel pipe fitting crimping pliers according to claim 1, characterized in that, It also includes a pressure relief valve and a return spring, wherein the return spring is sleeved on the telescopic rod, and one end of the return spring abuts against the inner wall of the hydraulic cylinder, and the other end of the return spring abuts against the piston of the hydraulic cylinder; the pressure relief valve is installed on the oil pump assembly.

7. The stainless steel pipe fitting crimping pliers according to claim 1, characterized in that, It also includes a fixing pin, the housing is provided with a fixing hole, the clamping pliers are provided with a positioning hole, and the fixing pin is inserted into the fixing hole and the positioning hole in sequence.

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