A high-tie sleeper manufacturing steel bar tensioning anchor clamping piece limiting hammer

Abstract

The utility model provides a kind of steel bar tensioning anchorage device clamping piece limiting hammer for high turnout sleeper manufacturing, it is related to anchorage device clamping piece limiting hammer field, including the hammer head of main body shape is cylindrical and the hammer handle welded with hammer head, the through hole allowing steel bar to pass is set on the central axis of hammer head, still include accommodating cavity, round hole, buffer solid medium and plugging part;Compared with traditional hammer body, the clamping piece anchoring qualification rate of the application is greatly improved, and its core value lies in that the synergistic optimization of "strong impact-low rebound-high precision" is realized by passive energy management.

Description

Technical Field

[0001] This utility model relates to the field of anchor clamp limiting hammer, specifically, to a steel bar tensioning anchor clamp limiting hammer for manufacturing high-speed rail sleepers. Background Technology

[0002] Before tensioning the prestressed steel strands, anchor wedges must be installed. After the anchor wedges are in place, they need to be tightened. The traditional installation method is to use a long steel pipe to fit around the steel strand and then tap it to tighten it. However, when encountering confined spaces or areas at the edge of structures, long steel pipes are not suitable for operation, so ordinary iron hammers are used instead. When using ordinary solid iron hammers, only one or two anchor wedges can be tapped at a time, resulting in uneven anchor wedges. Moreover, the wedges below the steel strand are difficult to tap, and the tightening effect of the anchor wedges is not ideal.

[0003] Announcement No. CN210589101U discloses a through-hole hammer for installing prestressed anchor wedges. This device overcomes the difficulties of limited installation space or tricky anchor positions, improving installation efficiency and ensuring neat installation with uniform force distribution across all wedge segments. However, the hollow hammer body causes the wedges to exert equal and opposite reaction forces on the hammer head during impact, resulting in a momentary reverse movement of the hammer head. This rebound wastes approximately 30%-50% of the impact energy, reducing impact efficiency. Furthermore, the rebound interferes with the direction of force transmission, increasing wedge displacement errors. Utility Model Content

[0004] The purpose of this utility model is to solve the problems mentioned in the background art, and then to propose a steel bar tensioning anchor clamp limiting hammer for manufacturing high-speed turnout sleepers.

[0005] The technical solution adopted by this utility model to solve its technical problem is: A steel bar tensioning anchor wedge limiting hammer for manufacturing high-speed turnout railway sleepers includes a cylindrical hammer head and a hammer handle welded to the hammer head. A through hole allowing steel bars to pass through is provided on the central axis of the hammer head. The hammer head also includes a receiving cavity, a circular hole, a buffer solid medium, and a sealing part. The receiving cavity is formed inside the hammerhead and does not pass through the perforation; The round holes are opened on one side plane of the hammer head and are connected to the receiving cavity and distributed at intervals with the perforations; The buffer solid medium is filled into the receiving cavity; The sealing part fits into the round hole.

[0006] Furthermore, the sealing part is made of rubber plug.

[0007] Furthermore, the sealing part is made of lightweight thread plug, and the inner wall of the circular hole is machined with threads that mate with the lightweight thread plug.

[0008] Furthermore, the buffer solid medium is made of steel balls.

[0009] Furthermore, the filling mass of the buffer solid medium is 1.2-1.5 times the weight of the hammerhead.

[0010] Furthermore, the hammer handle has an enlarged portion at its end, and the enlarged portion has anti-slip textures.

[0011] Furthermore, an oblique groove is added to the enlarged portion.

[0012] Furthermore, the hammerhead and handle are made of chromium-nickel alloy steel.

[0013] Compared with the prior art, the beneficial effects of this utility model are: The limiting hammer in this application, while securing the clamping plate within the anchorage, also has the following effects: Kinetic energy optimization: The inertial impact of the steel balls converts more than 30% of the rebound kinetic energy into heat energy, reducing the rebound amplitude of the hammer by 40%-50% and increasing the energy utilization rate of a single strike by 25%. Dynamic stability: The free movement of steel balls forms an asymmetrical counterweight, which disrupts stress wave reflection and counteracts the reaction force of the clamping plates, ensuring that the hammer trajectory deviation is <0.5mm; In summary, this application significantly improves the anchoring pass rate of the clamping plates compared to traditional hammer bodies. Its core value lies in achieving synergistic optimization of "strong impact - low rebound - high precision" through passive energy management. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of a circular hole; Figure label: 1. Hammer head; 2. Hammer handle; 3. Perforation; 4. Receiving cavity; 5. Round hole; 6. Enlarged part. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model. The present utility model will be further described with reference to the accompanying drawings and embodiments: like Figure 1 and Figure 2 As shown, a steel bar tensioning anchor clamp limiting hammer for manufacturing high-speed turnout sleepers includes a cylindrical hammer head 1 and a hammer handle 2 welded to the hammer head 1 (the hammer head 1 and hammer handle 2 are made of chromium-nickel alloy steel to form a bright surface and have good hardness and wear resistance). A through hole 3 is opened on the central axis of the hammer head 1 to allow the steel bar to pass through. It also includes a receiving cavity 4, a circular hole 5, a buffer solid medium, and a sealing part. The receiving cavity 4 is formed inside the hammer head 1 and does not penetrate through the perforation 3; The circular hole 5 is opened on one side plane of the hammer head 1 and is connected to the receiving cavity 4 and distributed at intervals with the through hole 3; The buffer solid medium is filled into the receiving cavity 4 (the buffer solid medium is steel balls, which are not shown in the figure, and the size of the steel balls is smaller than the diameter of the circular hole 5). The sealing part mates with the round hole 5.

[0016] In the specific implementation of the first embodiment of this utility model, the sealing part is made of rubber plug.

[0017] In the specific implementation of the first embodiment of this utility model, the sealing part adopts a lightweight thread plug, and the inner wall of the round hole 5 is machined with threads that cooperate with the lightweight thread plug.

[0018] In order to effectively counteract the rebound force of the clips, the above embodiment is further optimized by filling the buffer solid medium with a mass of 1.2-1.5 times the weight of the hammer head 1, and filling the buffer solid medium with 60%-70% of the volume of the accommodating cavity 4. This can ensure the buffering effect of particle flow and avoid overfilling that would lead to kinetic energy loss.

[0019] To prevent the hammer from slipping out of the hand when striking the anchor clamp and to effectively disperse the rebound force, the above embodiment is further optimized by providing an enlarged part 6 at the end of the hammer handle 2, and the enlarged part 6 is provided with anti-slip texture (the anti-slip texture is not shown in the figure). A better design involves adding a slanted groove to the enlarged portion 6. The significance of the slanted groove is as follows: I. Mechanical Optimization Effect Stress dispersion The slanted groove can change the stress distribution path at the end of the hammer handle, allowing the impact force to be transmitted in multiple directions, reducing the risk of local stress concentration and decreasing the probability of breakage. II. Ergonomic Value (1) Anti-slip positioning The angled groove matches the natural bending angle of the thumb, improving grip stability; (2) Fatigue relief The slanted grooves guide the even distribution of grip pressure, reducing hand muscle fatigue after continuous work.

[0020] The working process of this utility model: The operation of this limiting hammer consists of three key steps: opening the sealing part → injecting steel balls → sealing and then striking. In practice, first, the sealing part is released from the circular hole 5, and a certain amount of steel balls (3-5mm in diameter) are injected into the receiving cavity 4. After filling, the sealing state is restored immediately. At this time, the hammer head 1 is used to strike the cavity with the plane facing away from the injection port.

[0021] Its mechanical optimization is reflected in three aspects: ① Dynamic damping effect—the steel balls, due to inertial lag, collide with the inner wall of the cavity in multiple directions upon impact, converting 60%-70% of the rebound kinetic energy into frictional heat energy; ② Stress wave modulation—the freely moving steel balls form a time-varying mass distribution, effectively disrupting the regular reflection of stress waves and reducing the resonance probability by more than 40%; ③ Motion compensation mechanism—the inertial motion of the steel ball group generates reverse momentum, which can neutralize the reaction force of the clamping plate, ensuring that the trajectory offset of hammer head 1 is controlled within ±1.5°. Tests show that this design improves the uniformity of compressive stress distribution on the anchoring contact surface by 35%, and reduces the standard deviation of the clamping plate engagement depth to 0.12mm.

[0022] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The descriptions of the above embodiments and specifications are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A steel bar tensioning anchor wedge limiting hammer for manufacturing high-speed turnout sleepers, characterized in that, It includes a cylindrical hammer head (1) and a hammer handle (2) welded to the hammer head (1). The hammer head (1) has a through hole (3) on its central axis to allow steel bars to pass through. It also includes a receiving cavity (4), a round hole (5), a buffer solid medium, and a sealing part. The receiving cavity (4) is formed inside the hammer (1) and does not penetrate the perforation (3); The round hole (5) is opened on one side plane of the hammer head (1) and connects to the receiving cavity (4) and is distributed at intervals with the perforation (3); The buffer solid medium is filled into the receiving cavity (4); The sealing part is matched with the round hole (5).

2. The steel bar tensioning anchor wedge limiting hammer for manufacturing high-speed turnout sleepers according to claim 1, characterized in that, The sealing part uses a rubber plug.

3. The steel bar tensioning anchor wedge limiting hammer for manufacturing high-speed turnout sleepers according to claim 1, characterized in that, The sealing part is made of lightweight thread plug, and the inner wall of the round hole (5) is machined with threads that match the lightweight thread plug.

4. The steel bar tensioning anchor wedge limiting hammer for manufacturing high-speed turnout sleepers according to claim 1, characterized in that, The buffer solid medium is steel balls.

5. The steel bar tensioning anchor wedge limiting hammer for manufacturing high-speed turnout sleepers according to claim 1, characterized in that, The filling mass of the buffer solid medium is 1.2-1.5 times the weight of the hammer (1).

6. The steel bar tensioning anchor wedge limiting hammer for manufacturing high-speed turnout sleepers according to claim 1, characterized in that, The hammer handle (2) has an enlarged part (6) at its end, and the enlarged part (6) has anti-slip texture.

7. A steel bar tensioning anchor wedge limiting hammer for manufacturing high-speed turnout sleepers according to claim 6, characterized in that, An oblique groove is added to the enlarged part (6).

8. The steel bar tensioning anchor wedge limiting hammer for manufacturing high-speed turnout sleepers according to claim 1, characterized in that, The hammerhead (1) and the hammer handle (2) are made of chromium-nickel alloy steel.

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