Feeding and discharging device of box-type quenching and tempering furnace

Abstract

The utility model discloses a feeding and discharging device of a box-type hardening and tempering furnace, which comprises a track and a walking trolley which reciprocates along the track, a pair of vertical tracks are arranged on the walking trolley at intervals along the width direction, a lifting mechanism is fixed on the walking trolley between the two vertical tracks, a lifting end of the lifting mechanism is connected with a lifting pulley which slides up and down along the two vertical tracks, and the lifting pulley is connected with the track. The lifting pulley is provided with a pair of material forks which horizontally extend forwards, and a material frame used for being pushed into the box-type hardening and tempering furnace is inserted into the material forks in a sliding mode. The material frame has the advantages that the material frame can be stably supported to enter and exit from the box type hardening and tempering furnace, the height position of the material frame can be adjusted according to needs, the front-back distance of the material frame in the hardening and tempering furnace can be adjusted, efficient charging and discharging of steel products contained in the material frame can be easily achieved, and the material frame is suitable for operation of charging various materials into the furnace. Maximization of quenching operation of different materials in the same furnace is achieved, the operation process is simplified, the charging amount of the box-type quenching and tempering furnace is guaranteed, the quenching and tempering heat treatment production efficiency is improved, and the hidden danger that operators are burnt and scalded is eradicated.

Description

Technical Field

[0001] This utility model relates to the field of heat treatment technology for metal materials, and in particular to a feeding and discharging device for a box-type quenching and tempering furnace. Background Technology

[0002] A box-type tempering furnace is a conventional piece of equipment suitable for the heat treatment of metallic materials. It is suitable for various types of heat treatment, such as tempering, annealing, and normalizing, of small steel parts, with the heating resistance wires mainly arranged on both sides of the furnace wall. Tempering heat treatment involves quenching followed by high-temperature tempering. After tempering heat treatment, alloy steel can improve internal defects, endow it with good comprehensive mechanical properties, and make it easy to machine.

[0003] Traditional box-type tempering furnaces have significant drawbacks: First, the workpieces require high-temperature heating during tempering, which can easily cause burns to operators when unloading them. Second, the furnace temperature must drop to a lower level before the next batch of workpieces can be loaded, making efficient loading and unloading crucial for on-site production. Furthermore, tempering is applicable to a wide range of materials, and when multiple materials are quenched in the same furnace, they need to be heated at different temperatures before being unloaded, greatly increasing the complexity of the on-site operation and affecting the furnace's loading capacity, causing significant inconvenience to production. Summary of the Invention

[0004] The purpose of this utility model is to provide a box-type quenching furnace feeding and discharging device to address the shortcomings of the existing technology.

[0005] To achieve the above objectives, the present invention can adopt the following technical solution:

[0006] The box-type tempering furnace feeding and discharging device of this utility model includes a track and a traveling trolley that reciprocates along it. A pair of vertical rails are spaced apart along the width direction on the traveling trolley. A lifting mechanism is fixed on the traveling trolley between the two vertical rails. A lifting trolley that slides up and down along the two vertical rails is connected to the lifting end of the lifting mechanism. The lifting trolley has a pair of horizontally forward-extending material forks. Material frames for pushing into the box-type tempering furnace are slidably inserted on the material forks.

[0007] Furthermore, the track is formed by a pair of parallel straight steel rails connected by multiple connecting ribs. The trolley consists of a rectangular horizontal frame, multiple horizontal reinforcing ribs spaced apart within the rectangular horizontal frame, and four sets of traveling wheels evenly distributed at the four corners of the rectangular horizontal frame. The top surface of the two straight steel rails is a sloped track surface that slopes downwards from the outside to the inside along the width direction. The four sets of traveling wheels are conical wheels adapted to roll and move along the sloped track surface. This improves the stability of the trolley when moving along the track through the cooperation of the sloped track surface and the conical wheels. In addition, each traveling wheel can be coaxially provided with an inner locking platform that locks onto the inside of the straight steel rail. The inner locking platform forms a locking limit, effectively preventing the trolley from tipping over to the left or right.

[0008] Furthermore, the vertical rail is a track column with a rectangular cross-section, and a connecting cross brace is erected between the two vertical rails to enhance their support stability. The upper ends of the two vertical rails are equipped with handrails for easy gripping. At this time, the lifting trolley includes a rectangular frame aligned with the height of the vertical rail, and multiple longitudinal reinforcing ribs spaced apart within the rectangular frame. A pair of upper ear plates are provided at the top two corners of the rectangular frame, and each pair of upper ear plates is equipped with an upper roller that rolls along the rear facade of the vertical rail. A pair of lower ear plates are provided at the bottom two corners of the rectangular frame, and each pair of lower ear plates is equipped with... The rectangular frame is equipped with lower rollers that roll along the front facade of the vertical rail, and two upper rollers that roll along the rear facade of the vertical rail, as well as two lower rollers that roll along the front facade of the vertical rail. This ensures stable up-and-down sliding of the rectangular frame along the vertical rail, effectively preventing the rectangular frame from tilting forward or backward during furnace loading and unloading operations, and thus preventing the entire trolley from tilting forward or backward. In addition, two pairs of auxiliary wheels that roll along opposite side facades of the vertical rail are connected to the rectangular frame via horizontally arranged axles. The auxiliary wheels effectively prevent the rectangular frame from tilting to the left or right during furnace loading and unloading operations, and thus prevent the entire trolley from tilting to the left or right.

[0009] Furthermore, the lifting mechanism is a hand-cranked top that is vertically fixed to the walking trolley. The lifting end of the hand-cranked top is vertically upward, and the upper end of the lifting end is provided with a connecting frame that is fixedly connected to the lifting trolley, which can conveniently operate the hand-cranked top to drive the lifting trolley to move up and down.

[0010] Furthermore, to achieve a sliding insertion fit between the fork and the frame, the fork is a horizontal straight rod with a rectangular cross-section, and the bottom of the frame is provided with a hollow insert tube that is adapted to be inserted into the two forks.

[0011] The advantages of this utility model are that by setting up a traveling trolley that can move back and forth in a straight line along the track, and setting up a lifting trolley with a material fork that can slide up and down on the traveling trolley, the material frame can be stably supported for entering and exiting the box-type tempering furnace. The height of the material frame can be adjusted as needed, and the front and rear distance of the material frame in the tempering furnace can be adjusted. This makes it easy to achieve efficient loading and unloading of steel parts contained in the material frame. It is suitable for loading and unloading of various materials into the furnace, maximizing the quenching of different materials in the same furnace, simplifying the operation process, ensuring the loading capacity of the box-type tempering furnace, improving the production efficiency of tempering heat treatment, and eliminating the risk of burns to operators. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model.

[0013] Figure 2 yes Figure 1 Right view of the walking cart.

[0014] Figure 3 yes Figure 1 A top view of the walking cart.

[0015] Figure 4 yes Figure 1 A top view of the middle track.

[0016] Figure 5 yes Figure 1 Sectional view along the AA direction.

[0017] Figure 6 yes Figure 1 Right view of the material frame. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] like Figure 1As shown, the box-type tempering furnace feeding and discharging device of this utility model includes a track 1 fixed on the ground and a traveling trolley 2 that moves back and forth in a straight line along the track 1. A pair of vertical rails 3 are spaced apart along the width direction on the traveling trolley 2. A lifting mechanism 4 is fixed on the traveling trolley 2 between the two vertical rails 3. A lifting trolley 5 that slides up and down along the two vertical rails 3 is connected to the lifting end of the lifting mechanism 4. A pair of parallel material forks 6 are provided on the lifting trolley 5. The two material forks 6 extend horizontally forward from the lifting trolley 5. A material frame 7 for holding steel parts and pushing them into the box-type tempering furnace for tempering heat treatment is slidably inserted on the material forks 6.

[0020] Specifically, such as Figure 2-6 As shown, track 1 is formed by a pair of parallel straight steel rails 1.1 connected by multiple connecting ribs 1.2. The trolley 2 consists of a rectangular horizontal frame 2.1 with a width adapted to the width of track 1, multiple horizontal reinforcing ribs 2.2 spaced apart within the rectangular horizontal frame 2.1, and four sets of wheels 2.3 evenly distributed at the four corners of the rectangular horizontal frame 2.1. The top surface of the two straight steel rails 1.1 is a sloped track surface that slopes downwards from the outside to the inside along the width direction. The four sets of wheels 2.3 are conical wheels, with their diameter gradually decreasing from the inner end near the rectangular horizontal frame 2.1 to the outer end away from the rectangular horizontal frame 2.1, allowing them to fit and roll on the sloped track surface. The cooperation between the sloped track surface and the conical wheels improves the stability of the entire trolley 2 when it travels along track 1, and allows the two straight steel rails 1.1 to exert a certain inward clamping force on the trolley 2 when it travels on track 1. In addition, an inner clamping platform 2.4 can be coaxially set on each traveling wheel 2.3, which is clamped to the inside of the straight steel rail 1.1. The inner clamping platform 2.4 is located at the end of the traveling wheel 2.3 near the rectangular horizontal frame 2.1 and is integrally formed with the traveling wheel 2.3. The diameter of the inner clamping platform 2.4 is larger than the inner end diameter of the traveling wheel 2.3, so that the inner clamping platform 2.4 can be used to form a clamping limit, effectively preventing the entire traveling trolley 2 from tipping over to the left and right.

[0021] The vertical rail 3 is a rectangular track column, vertically fixed to the rectangular horizontal frame 2.1 of the traveling trolley 2. A connecting cross brace 8 is installed between the two vertical rails 3 to enhance their stability. To ensure the usability of the vertical rails 3, the connecting cross brace 8 should be placed horizontally at the upper and lower ends of the two vertical rails 3, thereby avoiding interruption of the vertical rails 3 in the middle and ensuring that the lifting trolley 5 sliding up and down along the vertical rails 3 will not be blocked by the connecting cross brace 8, maximizing the sliding range of the lifting trolley 5. In addition, a convenient grip handle 9 can be installed at the upper end of the two vertical rails 3. The two grip handles 9 extend horizontally backward, exactly in the opposite direction to the material fork 6, which can minimize the risk of operators being burned or scalded by the furnace wall of the box-type tempering furnace or the high-temperature workpieces being removed during the operation of pushing the traveling trolley 2 to load and unload the furnace.

[0022] The lifting mechanism 4 can be a hand-cranked top, vertically fixed to the traveling trolley 2, with its lifting end facing upwards. A connecting frame 10, which is fixed to the lifting trolley 5, is provided on the lifting end of the hand-cranked top. By rotating the crank handle of the hand-cranked top, it can be easily controlled to push the lifting trolley 5 up or down. Alternatively, a lifting column 11 can be provided on the traveling trolley 2, and the hand-cranked top can be vertically fixed to the lifting column 11, thereby increasing the height of the hand-cranked top and raising the overall lifting range of its lifting end.

[0023] The lifting trolley 5 includes a rectangular frame 5.1 aligned with the height of the vertical rail 3, and multiple longitudinal reinforcing ribs 5.2 spaced apart within the rectangular frame 5.1. At the top two corners of the rectangular frame 5.1, a pair of upper ear plates 5.3 are provided, each pair of upper ear plates 5.3 equipped with an upper roller 5.4 that rolls along the rear facade of the vertical rail 3. At the bottom two corners of the rectangular frame 5.1, a pair of lower ear plates 5.5 are provided, each pair of lower ear plates 5.5 equipped with a lower roller 5.6 that rolls along the front facade of the vertical rail 3. Through the two upper rollers 5.4 rolling along the rear facade of the vertical rail 3 and the two lower rollers 5.6 rolling along the front facade of the vertical rail 3, the rectangular frame 5.1 can slide stably up and down along the vertical rail 3, while also effectively preventing the rectangular frame 5.1 from tilting forward or backward, thereby preventing the entire traveling trolley 2 from tilting forward or backward. In addition, two pairs of auxiliary wheels 5.8 are connected to the rectangular frame 5.1 via horizontally set axles 5.7. These wheels roll along the opposite sides of the vertical rail 3. The auxiliary wheels 5.8 can effectively prevent the rectangular frame 5.1 from tilting to the left or right, thereby preventing the entire trolley 2 from tilting to the left or right.

[0024] The fork 6 is a horizontal straight rod with a rectangular cross-section, fixed to the front side of the rectangular vertical frame 5.1 of the lifting trolley 5. At this time, a hollow insert 12 is provided at the bottom of the material frame 7 to be adapted to insert the two forks 6, thereby easily realizing the sliding insertion and engagement of the forks 6 and the material frame 7, ensuring that the material frame 7 is stably supported on the forks 6. In addition, an upwardly inclined ramp is provided at the front end of the lower surface of the fork 6, so that the front end of the fork 6 forms an inverted trapezoidal plug 13 that is easy to insert into the hollow insert 12.

[0025] By setting up a traveling trolley 2 that can reciprocate linearly along track 1, and a lifting trolley 5 that is driven by a lifting mechanism 4 to slide up and down along the vertical rail 3 on the traveling trolley 2, the forks 6 set on the lifting trolley 5 can easily support the material frame 7, and the height of the material frame 7 can be adjusted as needed, which facilitates the entry and exit of the material frame 7 into the box-type tempering furnace. This makes it easy to realize the efficient loading and unloading of steel parts contained in the material frame 7. At the same time, the front and rear distance of the material frame 7 in the tempering furnace can be adjusted, which is suitable for loading and unloading of various materials into the furnace, maximizing the quenching of different materials in the same furnace, simplifying the operation process, ensuring the loading capacity of the box-type tempering furnace, improving the production efficiency of tempering heat treatment, and eliminating the risk of burns to operators.

[0026] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

Claims

1. A feeding and discharging device for a box-type tempering furnace, characterized in that: The device includes a track and a traveling trolley that reciprocates along it. The traveling trolley has a pair of vertical rails spaced apart along its width. A lifting mechanism is fixed on the traveling trolley between the two vertical rails. The lifting end of the lifting mechanism is connected to a lifting trolley that slides up and down along the two vertical rails. The lifting trolley has a pair of horizontally forward-extending forks. A material frame for pushing into the box-type tempering furnace is slidably inserted on the forks.

2. The feeding and discharging device for the box-type tempering furnace according to claim 1, characterized in that: The track is formed by a pair of parallel straight steel rails connected by multiple connecting ribs. The trolley consists of a rectangular horizontal frame, multiple horizontal reinforcing ribs spaced apart within the rectangular horizontal frame, and four sets of traveling wheels evenly distributed at the four corners of the rectangular horizontal frame. The top surface of the two straight steel rails is a sloped track surface that slopes downward from the outside to the inside along the width direction. The four sets of traveling wheels are conical wheels adapted to roll and move on the sloped track surface.

3. The feeding and discharging device for the box-type tempering furnace according to claim 2, characterized in that: Each of the aforementioned traveling wheels is coaxially provided with an inner clamping platform that is locked inside the straight rail.

4. The feeding and discharging device for the box-type tempering furnace according to claim 1, characterized in that: The vertical rail is a track column with a rectangular cross-section.

5. The feeding and discharging device for the box-type tempering furnace according to claim 4, characterized in that: A connecting cross brace is installed between the two vertical rails.

6. The feeding and discharging device for the box-type tempering furnace according to claim 4, characterized in that: Both of the vertical rails are equipped with handrails at the top.

7. The feeding and discharging device for the box-type tempering furnace according to claim 4, characterized in that: The lifting trolley includes a rectangular frame aligned with the height of the vertical rail, and multiple longitudinal reinforcing ribs spaced apart within the rectangular frame. A pair of upper ear plates are provided at the top two corners of the rectangular frame, and each pair of upper ear plates is equipped with an upper roller that rolls along the rear facade of the vertical rail. A pair of lower ear plates are provided at the bottom two corners of the rectangular frame, and each pair of lower ear plates is equipped with a lower roller that rolls along the front facade of the vertical rail.

8. The feeding and discharging device for a box-type tempering furnace according to claim 7, characterized in that: The rectangular frame is connected by two pairs of auxiliary wheels that roll along the opposite sides of the vertical rail via horizontally arranged axles.

9. The feeding and discharging device for a box-type tempering furnace according to claim 1, characterized in that: The lifting mechanism is a hand-cranked trolley that is vertically fixed to the walking trolley. The lifting end of the hand-cranked trolley is vertically upward, and its upper end is provided with a connecting frame that is fixedly connected to the lifting trolley.

10. The feeding and discharging device for a box-type tempering furnace according to claim 1, characterized in that: The feed fork is a horizontal straight rod with a rectangular cross-section, and the bottom of the feed frame is provided with a hollow insert tube that is adapted to be inserted into the two feed forks.

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