Novel manual pull hammer

Abstract

The utility model relates to the technical field of mechanical engineering, in particular to a novel manual pull hammer which comprises a slideway rod, a pull hammer body arranged on the slideway rod in a sliding mode, a check block connected to one end of the slideway rod, a connecting base connected to one end of the slideway rod, a groove formed in the connecting base, a connector inserted into the groove, and a bolt arranged on the side face, away from the slideway rod, of the connector. The connector and the connecting base are connected in a penetrating mode through a threaded pin shaft. The pin shaft connecting device is convenient and fast to use, only connectors with bolts in corresponding specifications need to be replaced when different pin shafts are drawn in the later period, the connecting base and the connectors can be detachably arranged, when the bolts are damaged in the later period, the connectors with the bolts can be directly replaced, and compared with a traditional mode that the bolts are welded again, the cost is reduced. Uniform stress can be effectively guaranteed, large radial force is not generated, and use is convenient; compared with a previous pull hammer overall rotating mode, only the connector of the driving bolt needs to be rotated, operation is easy and fast, working efficiency is greatly improved, and labor intensity is relieved.

Description

Technical Field

[0001] The utility model relates to a novel hand-held pulling hammer, in particular to a novel hand-held pulling hammer, and belongs to the technical field of mechanical engineering. Background Art

[0002] When repairing comprehensive machinery equipment, such as coal mining machines, comprehensive excavators and other equipment, there will be many pins to be removed. In order to be quick, a manual pull hammer is needed; the previous method of making a pull hammer is: select an appropriate round steel as the pull hammer slide, process two discs to make a hammer sleeve on the round steel, weld a bolt at one end of the round steel and screw it into the pin extraction hole, and weld a stopper at the other end. When using it, pull the hammer and use the inertia of the hammer to hit the stopper to pull out the pin;

[0003] However, the existing manual pulling hammers still have the following problems: 1. Inconvenient replacement: The design of the pin pulling holes for pins of different specifications is sometimes different. To solve this problem: 1. Processing pulling hammers of various specifications; 2. Gas cutting the bolts and re-welding the bolts of the required specifications. 2. Inconvenient maintenance: In the process of pulling the pulling hammer, there is a great possibility that the welded bolts will be pulled apart. When welding again is required, it is difficult to ensure that the bolts and the round steel are concentric. The unconcentric pulling hammer will quickly cause the weld to open or the round steel to deform due to radial tension during use, thus damaging the pulling hammer. 3. Inconvenient use: When the bolt of the pulling hammer is screwed into the pulling hole, the tail of the pulling hammer droops due to the problem of the center of gravity. Someone needs to support the pulling hammer horizontally from the back and rotate the tail of the pulling hammer in the same direction as the screwing-in direction.

[0004] Therefore, it is urgent to improve the novel hand-held pulling hammer to solve the above-mentioned problems. Utility Model Content

[0005] The purpose of the utility model is to provide a new type of hand-held pulling hammer, which is easy and quick to use. When pulling different pin shafts at a later time, it is only necessary to replace the connecting head with bolts of corresponding specifications. The connecting seat and the connecting head can be disassembled. When the bolts are damaged at a later time, it is only necessary to directly replace the connecting head with bolts. Compared with the traditional method of welding the bolts again, it can effectively ensure uniform force and does not generate a large radial force. Compared with the previous method of rotating the pulling hammer as a whole, it is only necessary to rotate the connecting head that drives the bolts, which is easy and quick, greatly improves work efficiency, and reduces labor intensity.

[0006] In order to achieve the above-mentioned purpose, the main technical solutions adopted by the utility model include: a new type of hand-held hammer, including a slide rod, a pull hammer is slidably arranged on the slide rod, one end of the slide rod is connected to a block, the end of the slide rod away from the block is connected to a connecting seat, a groove is provided in the connecting seat, a connecting head is inserted in the groove, a bolt is provided on the side of the connecting head away from the slide rod, and the connecting head and the connecting seat are connected by a threaded pin shaft.

[0007] Preferably, the pulling hammer includes a sleeve slidably connected to the slide rod and baffles located at both end surfaces of the sleeve, and an anti-slip rubber layer is provided on the sleeve.

[0008] Preferably, a through hole penetrating the entire connecting seat is provided on the connecting seat, the groove is a square groove, and the connecting head is a square connecting head adapted to the groove.

[0009] Preferably, a threaded hole is provided on the connecting head, the middle portion of the threaded pin is an external thread structure adapted to the threaded hole, the threaded pin passes through the through hole and the threaded hole, and a rotating handle is provided on the upper end surface of the threaded pin.

[0010] Preferably, both ends of the slide rod are provided with second threaded holes, the stopper and the connecting seat are provided with second threaded rods adapted to the second threaded holes, and a plurality of auxiliary protrusions are distributed on the surface of the stopper.

[0011] Preferably, the connecting seat and the stopper are fixedly connected to both ends of the slide rod by welding.

[0012] Preferably, both upper and lower ends of the threaded pin shaft are provided with openings for passing the cotter pin, and the bolt is a high-strength bolt.

[0013] The utility model has at least the following beneficial effects:

[0014] 1. The connecting head and the connecting seat are detachable, so that when pulling different pins later, you only need to replace the connecting head with bolts of the corresponding specifications, which has stronger adaptability. When the bolts are damaged later, you can directly replace the connecting head with bolts. Compared with the traditional re-welding of bolts, there will be no misalignment between the bolts and the round steel, which will cause the hammer to be damaged due to radial tension during use, resulting in welding or deformation of the round steel, effectively ensuring uniform force without generating large radial force. Compared with the previous overall rotation method of the hammer, you only need to rotate the connecting head that drives the bolts, and then quickly install the remaining parts later, making the device easy and quick to use, greatly improving work efficiency and reducing labor intensity. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0017] Figure 2 It is a partial top view schematic diagram of the utility model;

[0018] Figure 3 It is a cross-sectional view of the utility model;

[0019] Figure 4 This is a schematic diagram of the three-dimensional structure of the connector of the utility model;

[0020] Figure 5 It is a three-dimensional schematic diagram of the connecting seat of the utility model.

[0021] In the figure, 1-slide rod; 2-pull hammer; 3-block; 4-connecting seat; 5-groove; 6-connecting head; 7-bolt; 8-threaded pin; 9-sleeve; 10-baffle; 11-through hole; 12-threaded hole; 13-rotating handle; 14-; 15-second threaded rod; 16-auxiliary protrusion; 17-opening. DETAILED DESCRIPTION

[0022] The following will describe the implementation methods of the present application in detail with the help of accompanying drawings and examples, so that the implementation process of how the present application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0023] like Figure 1-Figure 2 As shown, the new hand-held pulling hammer provided in this embodiment includes a slide rod 1, on which a pulling hammer 2 is slidably arranged, wherein the pulling hammer 2 includes a sleeve 9 slidably connected to the slide rod 1 and baffles 10 at both end surfaces of the sleeve 9, and an anti-skid rubber layer is arranged on the sleeve 9, and the arrangement of the anti-skid rubber layer improves the anti-skid property of the pulling hammer 2 when in use;

[0024] like Figure 3-Figure 5 As shown, one end of the slide rod 1 is connected to a stopper 3, and the end of the slide rod 1 away from the stopper 3 is connected to a connecting seat 4. Further, both ends of the slide rod 1 are provided with second threaded holes, and the stopper 3 and the connecting seat 4 are provided with second threaded rods 15 adapted to the second threaded holes. A plurality of auxiliary protrusions 16 are distributed on the surface of the stopper 3, and the auxiliary protrusions 16 are provided to facilitate the rotation of the stopper 3.

[0025] Furthermore, the connection seat 4 and the stopper 3 are both fixedly connected to the two ends of the slide rod 1 by welding. Before the connection seat 4 and the stopper 3 are welded and fixed to the slide rod 1, the connection seat 4 and the stopper 3 are firstly screwed and connected and fixed to the slide rod 1 through the second threaded hole and the second threaded rod 15, and then welded and fixed, so that the connection and fixing effect of the connection seat 4 and the stopper 3 and the slide rod 1 can be greatly improved, and they will not be easily broken or damaged;

[0026] A groove 5 is provided in the connection seat 4, a connector 6 is inserted in the groove 5, a through hole 11 is provided on the connection seat 4 and runs through the entire connection seat 4, the groove 5 is a square groove, and the connector 6 is a square connector adapted to the groove 5. Compared with the circular setting, the square setting is easier to position and fix, and will not rotate;

[0027] A bolt 7 is arranged on one side of the connector 6 away from the slide rod 1. The connector 6 is connected to the connector seat 4 through a threaded pin 8. Both upper and lower ends of the threaded pin 8 are provided with openings 17 for passing a cotter pin. The bolt 7 is a high-strength bolt, and the bolt strength should be not less than grade 10.9, which can ensure the strength of the bolt 7 during connection and pulling, and will not be easily damaged.

[0028] Furthermore, a threaded hole 12 is provided on the connector 6, and the middle part of the threaded pin 8 is an external thread structure adapted to the threaded hole 12. The threaded pin 8 passes through the through hole 11 and the threaded hole 12. A rotating handle 13 is provided on the upper end surface of the threaded pin 8. The rotating handle 13 facilitates the rotation of the threaded pin 8. When the connector 6 and the connecting seat 4 are installed, the connector 6 is inserted into the groove 5. At this time, the two through holes 11 on the threaded hole 12 connecting seat 4 are connected, and then the threaded pin 8 is inserted into the through hole 11 and rotated. The external thread structure and the setting of the threaded hole 12 are used to realize the fixation of the threaded pin 8 after passing through the connector 6 The connecting head 6 and the connecting seat 4 are detachable, so that when pulling different pins later, it is only necessary to replace the connecting head 6 with bolts 7 of corresponding specifications, which has stronger adaptability. When the bolts 7 are damaged later, the connecting head 6 with bolts 7 can be directly replaced. Compared with the traditional re-welding of the bolts 7, it can effectively ensure uniform force without generating large radial force. Compared with the previous overall rotation method of the pulling hammer device, it is only necessary to rotate the connecting head 6 that drives the bolts 7, and then quickly install the remaining components later, making the use of the device easy and quick, greatly improving work efficiency and reducing labor intensity.

[0029] For example, certain words are used in the specification and claims to refer to specific components. Those skilled in the art should understand that hardware manufacturers may use different terms to refer to the same component. This specification and claims do not use differences in names as a way to distinguish components, but use differences in the functions of components as the criteria for distinction. For example, "including" mentioned throughout the specification and claims is an open term, so it should be interpreted as "including but not limited to". "Approximately" means that within an acceptable error range, those skilled in the art can solve technical problems within a certain error range and basically achieve technical effects.

[0030] It should be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a product or system including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such product or system. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the product or system including the elements.

[0031] The above description shows and describes several preferred embodiments of the utility model, but as mentioned above, it should be understood that the utility model is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the utility model concept described herein through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art do not deviate from the spirit and scope of the utility model, and should be within the scope of protection of the claims attached to the utility model.

Claims

1. A new type of hand-held pull hammer, comprising a slide rod (1), characterized in that: A pull hammer (2) is slidably arranged on the slide rod (1), one end of the slide rod (1) is connected to a stopper (3), the end of the slide rod (1) away from the stopper (3) is connected to a connecting seat (4), a groove (5) is provided in the connecting seat (4), a connecting head (6) is inserted in the groove (5), a bolt (7) is provided on a side of the connecting head (6) away from the slide rod (1), and the connecting head (6) is connected to the connecting seat (4) through a threaded pin shaft (8).

2. A new type of hand-held pull hammer according to claim 1, characterized in that: The pulling hammer (2) comprises a sleeve (9) slidably connected to the slide rod (1) and baffles (10) located at both end surfaces of the sleeve (9); an anti-slip rubber layer is provided on the sleeve (9).

3. A new type of hand-held pull hammer according to claim 1, characterized in that: The connection seat (4) is provided with a through hole (11) which runs through the entire connection seat (4); the groove (5) is a square groove; and the connection head (6) is a square connection head adapted to the groove (5).

4. A new type of hand-held hammer according to claim 3, characterized in that: The connecting head (6) is provided with a threaded hole (12), the middle portion of the threaded pin shaft (8) is an external thread structure adapted to the threaded hole (12), the threaded pin shaft (8) passes through the through hole (11) and the threaded hole (12), and the upper end surface of the threaded pin shaft (8) is provided with a rotating handle (13).

5. The new hand-held hammer according to claim 1 is characterized in that: Both ends of the slide rod (1) are provided with second threaded holes, the stopper (3) and the connecting seat (4) are provided with second threaded rods (15) adapted to the second threaded holes, and a plurality of auxiliary protrusions (16) are distributed on the surface of the stopper (3).

6. A new type of hand-held hammer according to claim 5, characterized in that: The connecting seat (4) and the stopper (3) are fixedly connected to the two ends of the slide rod (1) by welding.

7. A new type of hand-held pull hammer according to claim 1, characterized in that: The upper and lower ends of the threaded pin shaft (8) are both provided with openings (17) for passing the cotter pin, and the bolt (7) is a high-strength bolt.

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