Heating device for cutting pick brazing

Abstract

The utility model relates to the technical field of cutting pick brazing, and provides a heating device for cutting pick brazing, which comprises a first arch-shaped heating part and a pick body heating part, the first arch-shaped heating part is provided with a first accommodating space, and the first accommodating space is used for accommodating a cutting pick and heating the whole cutting pick; the section shape of the first arched heating part is matched with the outline shape of the cutting pick; the tooth body heating part is provided with a second containing space, the section shape of the tooth body heating part is matched with the contour shape of the tooth body of the cutting tooth, the tooth body heating part is open, and the second containing space communicates with the first containing space and is used for heating the tooth body of the cutting tooth; the heating temperature of the cutting pick is ensured to be uniform during brazing, the percent of pass of brazing is improved, and the condition that the temperature of a top alloy head of the cutting pick is inconsistent with that of a pick body during heating due to the adoption of a conventional tool is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of pick brazing, in particular to a pick profile heating tool. Background Art

[0002] The pick is one of the core parts used in various engineering machinery, such as rotary drilling rigs, milling machines, tunneling machines, and coal mining machines, for directly crushing various rocks. As a carrier that bears impact and wear, the welding quality of the pick is the main factor affecting the performance of the pick.

[0003] Induction brazing is widely used in the production of pick cutters. However, due to the special shape of pick cutters and the regular square structure of tooling during induction brazing, the local temperature of the pick cutters is inconsistent during heating. When the overall brazing material melts, some brazing material close to the tooling has been overburned, resulting in a low pick cut brazing qualification rate. Utility Model Content

[0004] The utility model provides a heating device for pick brazing, which is used to solve the defect of poor brazing effect of pick brazing tooling in the prior art.

[0005] The utility model provides a heating device for pick brazing, comprising:

[0006] A first arched heating portion, wherein the first arched heating portion is provided with a first accommodating space, the first accommodating space is used to accommodate the pick and to heat the pick as a whole, and the cross-sectional shape of the first arched heating portion is adapted to the contour shape of the pick;

[0007] The tooth body heating part is provided with a second accommodating space. The cross-sectional shape of the tooth body heating part is adapted to the contour shape of the tooth body of the pick and is openly arranged. The second accommodating space is connected to the first accommodating space and is used for heating the tooth body of the pick.

[0008] According to the heating device for pick brazing provided by the utility model, a pick temperature measuring device is provided on the outer sides of the first arch heating portion and the tooth body heating portion.

[0009] According to the heating device for pick brazing provided by the utility model, a second arched heating portion is provided at one end of the tooth body heating portion away from the first arched heating portion, the pick temperature measuring device is provided on the outer side of the second arched heating portion, and the second arched heating portion is provided with a third accommodating space, and the third accommodating space is connected to the second accommodating space for heating the pick as a whole.

[0010] According to the heating device for pick brazing provided by the utility model, the cross-sectional shape of the second arched heating portion is the same as the shape of the pick, and the second arched heating portion is the same size as the first arched heating portion.

[0011] According to the heating device for pick brazing provided by the utility model, the first arched heating part is provided with a first cavity, the tooth body heating part is provided with a second cavity, the second arched heating part is provided with a third cavity, the first cavity, the second cavity and the third cavity are connected to form a circulating cooling cavity, and the circulating cooling cavity is provided with a water inlet and a water outlet.

[0012] According to the heating device for pick brazing provided by the utility model, the first arched heating portion, the tooth body heating portion and the second arched heating portion are integrally formed.

[0013] The heating device for pick brazing provided by the utility model further comprises a positioning component, wherein a plurality of the positioning components are respectively arranged on both sides of the tooth body heating portion and connected to the tooth body heating portion.

[0014] According to the heating device for pick brazing provided by the utility model, the first arched heating portion and the second arched heating portion have the same length, both of which are 200-500 mm.

[0015] According to the heating device for pick brazing provided by the utility model, the length of the tooth body heating part is 1000-2000mm.

[0016] According to the heating device for pick brazing provided by the utility model, the wall thicknesses of the first arched heating portion, the tooth body heating portion and the second arched heating portion are the same, which are 1-3 mm.

[0017] The utility model provides a heating device for pick brazing, comprising a first arched heating portion and a tooth body heating portion, wherein the first arched heating portion is provided with a first accommodating space, the first accommodating space is used to accommodate the pick and to heat the pick as a whole, and the cross-sectional shape of the first arched heating portion is adapted to the contour shape of the pick; the tooth body heating portion is provided with a second accommodating space, the cross-sectional shape of the tooth body heating portion is adapted to the contour shape of the tooth body of the pick and is openly arranged, the second accommodating space is connected to the first accommodating space, and is used to heat the tooth body of the pick; in this way, the pick is arranged along the length direction of the heating device, successively It is sent into the first accommodating space and the second accommodating space to be heated. By setting the cross-sectional shape of the first arched heating part to be adapted to the contour shape of the pick, and the cross-sectional shape of the tooth body heating part to be adapted to the tooth body shape of the pick, the inner wall of any position of the first arched heating part can be the same as the spacing of the corresponding pick, and the inner wall of any position of the tooth body heating part can be the same as the spacing of the corresponding tooth body, thereby ensuring that the heating temperature of the pick is uniform during brazing, improving the qualified rate of brazing, and avoiding the situation where the top alloy head of the pick and the tooth body have inconsistent temperatures when heated due to the use of conventional tooling. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a schematic structural diagram of a heating device for pick brazing provided in an embodiment of the utility model;

[0020] Figure 2 It is a side view of a heating device for pick brazing provided in an embodiment of the utility model.

[0021] Reference numerals:

[0022] 1. First arched heating part; 11. First accommodating space; 2. Tooth heating part; 21. Second accommodating space; 3. Second arched heating part;

[0023] 4. Water inlet pipe; 5. Water outlet pipe; 6. Positioning component. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described clearly and completely in conjunction with the drawings in the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.

[0025] Combine the following Figure 1 to Figure 2 A heating device for pick brazing provided in an embodiment of the utility model is described.

[0026] The present embodiment provides a heating device for pick brazing, comprising: a first arch heating portion 1 and a tooth body heating portion 2 .

[0027] Among them, the first arched heating portion 1 is provided with a first accommodating space 11, the first accommodating space 11 is used to accommodate the pick and to heat the pick as a whole, and the cross-sectional shape of the first arched heating portion 1 is adapted to the contour shape of the pick; the tooth body heating portion 2 is provided with a second accommodating space 21, the cross-sectional shape of the tooth body heating portion 2 is adapted to the contour shape of the tooth body of the pick and is openly arranged, the second accommodating space 21 is connected with the first accommodating space 11, and is used to heat the tooth body of the pick.

[0028] When the utility model is in use, the pick is sent into the first accommodating space 11 and the second accommodating space 21 successively along the length direction of the heating device to be heated. When passing through the first accommodating space 11, the tooth body and the top alloy head of the pick are heated at the same time and connected by brazing. By setting the cross-sectional shape of the first arched heating part 1 to be adapted to the contour shape of the pick, and the cross-sectional shape of the tooth body heating part 2 to be adapted to the tooth body shape of the pick, the inner wall at any position of the first arched heating part 1 can be the same as the spacing of the corresponding pick, and the inner wall at any position of the tooth body heating part 2 can be the same as the spacing of the corresponding tooth body, thereby ensuring that the pick is heated to a uniform temperature during brazing, improving the qualified rate of brazing, and avoiding the situation where the top alloy head of the pick and the tooth body have inconsistent temperatures when heated due to the use of conventional tooling.

[0029] In this embodiment, a pick temperature measuring device is provided on the outer side of the first arch heating portion 1 and the tooth body heating portion 2. The pick temperature measuring device may be an infrared thermometer for measuring the temperature of the pick after being heated. For example, after the pick is heated by passing through the first accommodating space 11, the infrared thermometer on the outer side of the first arch heating portion 1 is used to measure whether the temperature of the pick reaches the first preset temperature. After reaching the first preset temperature, the pick is sent into the second accommodating space 21 for heating, and the infrared thermometer on the outer side of the tooth body heating portion 2 is used to measure whether the temperature of the pick reaches the second preset temperature, and the second preset temperature is greater than the first preset temperature.

[0030] Furthermore, a second arched heating part 3 is provided at one end of the tooth body heating part 2 away from the first arched heating part 1, and a pick temperature measuring device is also provided on the outside of the second arched heating part 3; the second arched heating part 3 is provided with a third accommodating space, which is connected to the second accommodating space 21 and is used to heat the entire pick. For example, an infrared thermometer on the outside of the second arched heating part 3 is used to measure whether the temperature of the pick passing through the third accommodating space reaches a third preset temperature, and the third preset temperature is greater than the second preset temperature.

[0031] When the heating device for brazing picks provided in this embodiment is in use, when the picks to be welded enter the first accommodating space 11, the heating device is electrically connected to an external power source and generates a high-frequency current. The high-frequency current excites an alternating magnetic field, so that the picks to be welded placed in the alternating magnetic field will act as conductors and generate an induced current under the action of the alternating magnetic field. The induced current forms a closed current loop inside the picks to be welded, namely, eddy current. The eddy current can convert electrical energy into thermal energy, thereby heating the picks and realizing the brazing of the picks.

[0032] In this embodiment, the cross-sectional shape of the second arched heating portion 3 is the same as that of the pick, and the second arched heating portion 3 is the same size as the first arched heating portion 1. With this arrangement, when the pick passes through the third accommodation space, the spacing between the inner wall of the second arched heating portion 3 and the pick is the same as the spacing between the inner wall of the first arched heating portion 1 and the pick, thereby improving the uniformity of the magnetic induction intensity and the induced magnetic field in the third accommodation space, so that the pick is heated evenly in the first arched heating portion 1, the tooth body heating portion 2 and the second arched heating portion 3, and further improving the brazing effect.

[0033] Furthermore, the first arched heating portion 1 is provided with a first cavity, the tooth body heating portion 2 is provided with a second cavity, and the second arched heating portion 3 is provided with a third cavity. The first cavity, the second cavity and the third cavity are connected to form a circulating cooling cavity, and the circulating cooling cavity is provided with a water inlet and a water outlet; for example, the water inlet and the water outlet can be arranged at intervals on the tooth body heating portion 2, and are respectively connected to an external water supply mechanism through a water inlet pipe 4 and a water outlet pipe 5, and coolant is supplied to the circulating cooling cavity through the water inlet pipe 4. After the coolant flows in the heating device to absorb heat, it flows out from the water outlet pipe 5, and the coolant is cooled by the circulating flow of the coolant in the heating device, thereby preventing the heating device from being damaged by high temperature; and the heating device is provided with a hollow structure, which can slow down the transfer of heat energy generated by the eddy current in the pick to the outside, that is, the circulating cooling cavity can keep the pick warm, thereby reducing the heat loss of the heating device and improving the heating efficiency.

[0034] In some embodiments, the first arched heating portion 1, the tooth body heating portion 2 and the second arched heating portion 3 are integrally formed. The first arched heating portion 1, the tooth body heating portion 2 and the second arched heating portion 3 can be processed from a copper tube and subjected to profiling treatment. The copper tube is surrounded along the direction of movement of the pick to form a profiling heating tooling so that each part has the same contour shape as the pick to ensure that the pick is heated evenly.

[0035] In this embodiment, a positioning component 6 is also included, and a plurality of positioning components 6 are respectively arranged on both sides of the tooth body heating part 2 and connected to the tooth body heating part 2. For example, the positioning component 6 can be a component such as a fixing rod or a fixing block, and the plurality of positioning components 6 are evenly arranged on both sides of the tooth body heating part 2 along the length direction of the tooth body heating part 2 and fixedly connected thereto, which can be connected by bolts or by welding. In this arrangement, the heating device is fixed by the positioning component 6, ensuring that the distance between the pick and the inner wall of the first arch heating part 1, the tooth body heating part 2, and the second arch heating part 3 is the same, ensuring that the pick is heated evenly.

[0036] In some embodiments, the lengths of the first arched heating portion 1 and the second arched heating portion 3 are the same, both 200-500 mm, the length of the tooth heating portion 2 is 1000-2000 mm, and the wall thicknesses of the first arched heating portion 1, the tooth heating portion 2 and the second arched heating portion 3 are the same, all 1-3 mm.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A heating device for pick brazing, characterized in that: include: A first arched heating portion (1), the first arched heating portion (1) being provided with a first accommodating space (11), the first accommodating space (11) being used to accommodate a pick and to heat the pick as a whole, the cross-sectional shape of the first arched heating portion (1) being adapted to the contour shape of the pick; The tooth body heating portion (2) is provided with a second accommodating space (21). The cross-sectional shape of the tooth body heating portion (2) is adapted to the contour shape of the tooth body of the pick and is openly arranged. The second accommodating space (21) is connected to the first accommodating space (11) and is used for heating the tooth body of the pick.

2. The heating device for pick brazing according to claim 1, characterized in that: A pick temperature measuring device is provided on the outer sides of the first arched heating portion (1) and the tooth body heating portion (2).

3. The heating device for pick brazing according to claim 2, characterized in that: A second arched heating portion (3) is provided at one end of the tooth body heating portion (2) away from the first arched heating portion (1); the pick temperature measuring device is provided on the outer side of the second arched heating portion (3); the second arched heating portion (3) is provided with a third accommodating space, and the third accommodating space is connected to the second accommodating space (21) for heating the pick as a whole.

4. The heating device for pick brazing according to claim 3, characterized in that: The cross-sectional shape of the second arched heating portion (3) is the same as the shape of the pick, and the second arched heating portion (3) is the same size as the first arched heating portion (1).

5. The heating device for pick brazing according to claim 3, characterized in that: The first arched heating portion (1) is provided with a first cavity, the tooth body heating portion (2) is provided with a second cavity, and the second arched heating portion (3) is provided with a third cavity. The first cavity, the second cavity and the third cavity are connected to form a circulating cooling cavity, and the circulating cooling cavity is provided with a water inlet and a water outlet.

6. The heating device for pick brazing according to claim 3, characterized in that: The first arched heating portion (1), the tooth body heating portion (2) and the second arched heating portion (3) are integrally formed.

7. The heating device for pick brazing according to claim 1, characterized in that: It also comprises a positioning component (6), wherein a plurality of the positioning components (6) are respectively arranged on both sides of the tooth body heating portion (2) and connected to the tooth body heating portion (2).

8. The heating device for pick brazing according to claim 3, characterized in that: The first arched heating portion (1) and the second arched heating portion (3) have the same length, both being 200-500 mm.

9. The heating device for pick brazing according to claim 1, characterized in that: The length of the tooth body heating part (2) is 1000-2000 mm.

10. The heating device for pick brazing according to claim 3, characterized in that: The wall thicknesses of the first arched heating portion (1), the tooth body heating portion (2) and the second arched heating portion (3) are the same, all being 1-3 mm.

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