Bituminous pavement paving raw material preheating device

Abstract

The utility model discloses an asphalt pavement paving raw material preheating device, and belongs to the technical field of asphalt processing. The device comprises an outer cover, a driving mechanism is arranged at the bottom of an inner cavity of the outer cover, a preheating cylinder is arranged in the center of the inner cavity of the outer cover, and two moving assemblies are symmetrically and vertically connected to the two ends of the driving mechanism and located on the two sides of the preheating cylinder. According to the asphalt preheating device, the problem that the existing asphalt preheating effect is poor is solved, asphalt is guided into the preheating cylinder, the heating box and the air pump are started, and hot air is pumped into the connecting pipe and the hose and enters the air injection frame through the hose; a double-shaft motor is started to drive rotating shafts at the two ends and a first bevel gear to rotate, and then a second bevel gear and a lead screw are driven to rotate, so that a sliding block drives an air injection frame to move up and down along the lead screw, air blowing heating is conducted on the outer wall of the preheating barrel from top to bottom, and the preheating uniformity of asphalt in the preheating barrel is guaranteed; therefore, the paving progress and effect of the existing asphalt pavement are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of asphalt processing, in particular to a raw material preheating device for asphalt pavement paving. Background Art

[0002] Asphalt pavement refers to various types of pavement paved with road asphalt materials mixed into mineral materials; asphalt binder improves the ability of paving aggregate to resist damage to the road surface caused by traffic and natural factors, making the road surface smooth, dust-free, impermeable and durable; therefore, asphalt pavement is the most widely used high-grade pavement in road construction;

[0003] Asphalt is a dark brown complex mixture composed of hydrocarbons of different molecular weights and their non-metallic derivatives. It is a kind of high-viscosity organic liquid, mostly existing in the form of liquid or semi-solid petroleum, and has a viscous texture. Therefore, when paving asphalt, the asphalt needs to be preheated. However, the heating components in the existing preheating cylinder are mostly fixedly installed, which makes the heating inside the preheating cylinder uneven, resulting in insufficient asphalt preheating effect, thus affecting the progress and effect of road paving. Utility Model Content

[0004] The purpose of the utility model is to provide a raw material preheating device for asphalt pavement paving, which has the advantages of adjustable preheating height and excellent preheating effect, effectively improves the progress and effect of existing asphalt pavement paving, and solves the problems in the prior art.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a raw material preheating device for asphalt pavement paving, comprising: an outer cover, a driving mechanism is arranged at the bottom of the inner cavity of the outer cover, a preheating cylinder is arranged at the center of the inner cavity of the outer cover, and two moving components are symmetrically and vertically connected at both ends of the driving mechanism and located on both sides of the preheating cylinder;

[0006] The driving mechanism includes: a double-axis motor, a rotating shaft, a first bevel gear and a second bevel gear. The double-axis motor is arranged at the center of the bottom end of the inner cavity of the outer cover. The two ends of the double-axis motor are respectively connected to a rotating shaft. The other end of each rotating shaft is sleeved with a first bevel gear. The bottom of the first bevel gear is meshed with the second bevel gear.

[0007] Preferably, a heating mechanism is provided at the top of the outer cover, and the heating mechanism includes: a heating box, an air pump, a connecting pipe and a hose. An air pump is provided at the top of the heating box, and connecting pipes are provided at both ends of the air pump, one of the connecting pipes is respectively connected to two hoses, and the two hoses are respectively connected to the moving components on both sides.

[0008] Preferably, the moving assembly includes: a screw, a slider and an injection frame, there are two screws, which are symmetrically inserted into the second bevel gears on both sides, and each screw is sleeved with two sliders, and the inner side of the slider is connected to the injection frame.

[0009] Preferably, limit rods are symmetrically arranged at both ends of the screw rod, and nozzles are evenly distributed on the inner side wall of the jet frame.

[0010] Preferably, a balloon and a valve are also provided on the top of the outer cover.

[0011] Preferably, a stirring structure is provided inside the preheating cylinder.

[0012] Preferably, a feed port is provided at the top of the preheating cylinder, and two discharge ports are provided at the lower end of the front side of the preheating cylinder.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0014] The utility model discloses a raw material preheating device for paving asphalt road. The device introduces asphalt into a preheating cylinder, turns on a heating box and an air pump, draws hot air into a connecting pipe and a hose, and then enters an air jet rack through the hose. The double-axis motor is started to drive the rotating shafts at both ends and a No. 1 bevel gear to rotate, thereby driving a No. 2 bevel gear meshing with the gear and its lead screw to rotate, thereby prompting sliders on both sides to drive the air jet rack to move up and down along the lead screw, thereby blowing and heating the outer walls on both sides of the preheating cylinder from top to bottom, so as to ensure the uniformity of preheating the asphalt in the preheating cylinder, thereby improving the progress and effect of existing asphalt road paving. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of an asphalt preheating device of the utility model;

[0016] Figure 2 This is a schematic diagram of the connection of the mobile mechanism of the utility model;

[0017] Figure 3 This is a schematic diagram of the connection of the heating mechanism of the utility model;

[0018] Figure 4 This is a schematic diagram of the interior of the preheating cylinder of the present utility model.

[0019] In the figure: 1. outer cover; 2. driving mechanism; 3. preheating cylinder; 4. moving assembly; 5. heating mechanism; 21. double-axis motor; 22. rotating shaft; 23. bevel gear No. 1; 24. bevel gear No. 2; 31. stirring structure; 41. screw rod; 42. slider; 43. jet frame; 51. heating box; 52. air pump; 53. connecting pipe; 54. hose. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only 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.

[0021] In order to solve the technical problem that the heating components in the existing preheating cylinder 3 are mostly fixedly installed, resulting in uneven heating inside the preheating cylinder 3, which leads to insufficient asphalt preheating effect, thus affecting the progress and effect of road paving, please refer to Figure 1-Figure 4 , this embodiment provides the following technical solutions:

[0022] A device for preheating raw materials for paving asphalt pavement, comprising: an outer cover 1, a balloon and a valve are also arranged at the top of the outer cover 1, the balloon is used to judge the air content of the inner cavity of the outer cover 1, and the valve is used to release the air in the inner cavity of the outer cover 1; a driving mechanism 2 is arranged at the bottom of the inner cavity of the outer cover 1, and the driving mechanism 2 comprises: a double-axis motor 21, a rotating shaft 22, a first bevel gear 23 and a second bevel gear 24, the double-axis motor 21 is arranged at the center of the bottom end of the inner cavity of the outer cover 1, two ends of the double-axis motor 21 are respectively connected to a rotating shaft 22, the other end of each rotating shaft 22 is sleeved with a first bevel gear 23, the lower part of the first bevel gear 23 is meshed with the second bevel gear 24, and the double-axis motor 21 is used to rotate the rotating shaft 22 and the first bevel gear 23 provides driving force, and the first bevel gear 23 rotates with the help of the dual-axis motor 21, thereby driving the second bevel gear 24 to engage and transmit; a preheating cylinder 3 is arranged at the center of the inner cavity of the outer cover 1, and a stirring structure 31 is arranged inside the preheating cylinder 3, and the stirring structure 31 is used to stir the asphalt inside to ensure the viscosity of the asphalt texture and further provide the uniformity of the heating of the asphalt; a feed port is arranged at the top of the preheating cylinder 3, and the feed port is also located at the top of the outer cover 1, which is used to put the asphalt into the preheating cylinder 3; two discharge ports are provided at the lower end of the front side of the preheating cylinder 3, and a control valve is arranged at the discharge port to guide the asphalt inside to the outside; both ends of the driving mechanism 2, and located at the preheating cylinder There are two moving components 4 symmetrically and vertically connected on both sides of 3. The moving component 4 is mainly used to adjust the heating position of the outer wall of the preheating cylinder 3. The moving component 4 includes: a screw rod 41, a slider 42 and an injection frame 43. The screw rod 41 has two, which are symmetrically inserted into the second bevel gear 24 on both sides. The screw rod 41 is rotated by the driving force provided by the second bevel gear 24. The two ends of the screw rod 41 are symmetrically provided with limit rods. Two sliders 42 are sleeved on each screw rod 41. The limit rod is mainly used to assist the slider 42 to move up and down along the vertical direction of the screw rod 41 to prevent the slider 42 from rotating and moving along the screw rod 41; the inner side of the slider 42 is connected to the injection frame 43, and the inner wall of the injection frame 43 is evenly distributed. The top of the outer cover 1 is provided with a heating mechanism 5, which includes: a heating box 51, an air pump 52, a connecting pipe 53 and a hose 54. The top of the heating box 51 is provided with an air pump 52 and a notch. The inside of the heating box 51 is symmetrically provided with heating rods, and the heating resistance wire in the heating rod is used to heat the inside of the heating box 51. The air enters the heating box 51 through the notch, and the air temperature is improved by the heating rod, thereby converting it into hot air. Connecting pipes 53 are provided at both ends of the air pump 52, and one of the connecting pipes 53 is respectively connected to two hoses 54, and the two hoses 54 are respectively connected to the jet racks 43 on both sides, and the other connecting pipe 53 is connected to the heating box 51;

[0023] Specifically, asphalt is fed into the preheating cylinder 3 through the feed port at the top of the outer cover 1, and the feed port is closed after all the asphalt is fed in to prevent the internal heat from volatilizing; the heating rod inside the heating box 51 is started, and air enters the heating box 51 through the notch at the top, and is converted into hot air through the heating rod, and then the air pump 52 is started to draw the hot air inside the heating box 51 to the connecting pipe 53, and the hot air is dispersed and spread to the hoses 54 at both ends through the connecting pipe 53, and then transmitted to the injection racks 43 at both ends through the hoses 54, and the outer wall of the preheating cylinder 3 is blown and heated through the nozzles on the inner wall; in order to ensure the uniform heating of the outer wall of the preheating cylinder 3, the dual-axis motor 21 is started to provide driving force, and the dual-axis motor 21 is used to drive the rotating shafts 22 at both ends to rotate, and then the No. 1 bevel gear 23 at both ends drives the No. 2 bevel gear 24 to mesh and transmit, and the No. 2 bevel gear 2 4 can drive the screw rod 41 connected thereto to rotate, thereby prompting the sliders 42 at both ends to drive the jet rack 43 to move up and down along the screw rod 41 and the limit rod, so that the outer wall of the preheating cylinder 3 is heated from top to bottom through the up and down movement of the jet rack 43 to ensure the uniformity of the internal asphalt heating; and the hose 54 has a certain flexibility, so when the jet rack 43 moves, the hose 54 connected to its top end can move accordingly to ensure that the heating mechanism 5 is in a normal heating state; after the asphalt is properly preheated, the control valve at the discharge port can be opened, and the preheated asphalt can be guided to the external road surface through the discharge port; when the inner cavity of the outer cover 1 is blown for heating, the balloon at its top end can be used to judge the gas content of the inner cavity of the outer cover 1. When the balloon reaches the maximum gas storage capacity, the air pump 52 can be turned off to stop blowing, and after the hot air gradually cools down, the valve can be opened to release the air.

[0024] The beneficial effects achieved by the above content are as follows: through the above method, the height of the jet rack 43 can be adjusted, and then the heating position of the preheating cylinder 3 can be adjusted, thereby enhancing the heating range of the outer wall of the preheating cylinder 3, avoiding uneven preheating of the internal asphalt, and thus improving the progress and effect of the existing asphalt pavement paving.

[0025] Working principle: by introducing asphalt into the preheating cylinder 3, turning on the heating box 51 and the air pump 52, the hot air is pumped into the connecting pipe 53 and the hose 54, and enters the injection rack 43 through the hose 54; starting the double-axis motor 21 to drive the rotating shaft 22 at both ends and the first bevel gear 23 to rotate, and then drive the second bevel gear 24 and its screw 41 engaged therewith to rotate, so as to prompt the sliders 42 on both sides to drive the injection rack 43 to move up and down along the screw 41, thereby blowing and heating the outer walls of both sides of the preheating cylinder 3 from top to bottom.

[0026] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0027] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A raw material preheating device for asphalt pavement paving, comprising: The outer cover (1) is characterized in that: a driving mechanism (2) is arranged at the bottom of the inner cavity of the outer cover (1), a preheating cylinder (3) is arranged at the center of the inner cavity of the outer cover (1), and two moving components (4) are symmetrically and vertically connected at both ends of the driving mechanism (2) and located on both sides of the preheating cylinder (3); The driving mechanism (2) comprises: a double-shaft motor (21), a rotating shaft (22), a first bevel gear (23) and a second bevel gear (24); the double-shaft motor (21) is arranged at the center of the bottom end of the inner cavity of the outer cover (1); two ends of the double-shaft motor (21) are respectively connected to a rotating shaft (22); the other end of each rotating shaft (22) is sleeved with a first bevel gear (23); the lower part of the first bevel gear (23) is meshed with the second bevel gear (24).

2. The asphalt pavement paving raw material preheating device according to claim 1, characterized in that: A heating mechanism (5) is arranged at the top of the outer cover (1), and the heating mechanism (5) comprises: a heating box (51), an air pump (52), a connecting pipe (53) and a hose (54). The air pump (52) is arranged at the top of the heating box (51), and connecting pipes (53) are arranged at both ends of the air pump (52), wherein one connecting pipe (53) is respectively connected to two hoses (54), and the two hoses (54) are respectively connected to the moving components (4) at both sides.

3. The asphalt pavement paving raw material preheating device according to claim 1, characterized in that: The moving assembly (4) comprises: a screw rod (41), a slider (42) and an injection frame (43). The screw rods (41) are provided with two screw rods, which are symmetrically inserted into the second bevel gears (24) on both sides. Two sliders (42) are sleeved on each screw rod (41), and the inner side of the slider (42) is connected to the injection frame (43).

4. The asphalt pavement paving raw material preheating device according to claim 3, characterized in that: Limit rods are symmetrically arranged at both ends of the screw rod (41), and nozzles are evenly distributed on the inner side wall of the jet frame (43).

5. The asphalt pavement paving raw material preheating device according to claim 1, characterized in that: A balloon and a valve are also provided on the top of the outer cover (1).

6. The asphalt pavement paving raw material preheating device according to claim 1, characterized in that: A stirring structure (31) is provided inside the preheating cylinder (3).

7. The asphalt pavement paving raw material preheating device according to claim 1, characterized in that: The top end of the preheating cylinder (3) is provided with a feed inlet, and the lower end of the front side of the preheating cylinder (3) is provided with two discharge outlets.

Images